/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

.nav-info {
    color: #cbd5e1;
    font-size: 0.9rem;
    font-weight: 600;
    margin-left: 1.5rem;
    white-space: nowrap;
}

.nav-info .student-id {
    color: #667eea;
    font-weight: 700;
}

.nav-info .student-name {
    color: #ffffff;
}


body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #e2e8f0;
    background: #0f172a;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
}
.ps-topic-date {
    font-size: 0.85rem;
    color: #94a3b8;   /* soft gray */
    margin-top: auto;
    margin-bottom: 1rem;
    display: block;
    text-align: left;
    font-style: italic;
}
.ps-topic-card .ps-topic-date {
    opacity: 0.8;
    transition: color 0.3s ease, opacity 0.3s ease;
}

.ps-topic-card:hover .ps-topic-date {
    color: #667eea;   /* matches your gradient blue */
    opacity: 1;
}


/* Professional Background Animations */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(118, 75, 162, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(102, 126, 234, 0.08) 0%, transparent 50%);
    animation: backgroundShift 20s ease-in-out infinite;
    z-index: -1;
}

/* Floating Particles */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, rgba(102, 126, 234, 0.4), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(118, 75, 162, 0.4), transparent),
        radial-gradient(1px 1px at 90px 40px, rgba(102, 126, 234, 0.5), transparent),
        radial-gradient(1px 1px at 130px 80px, rgba(118, 75, 162, 0.5), transparent),
        radial-gradient(2px 2px at 160px 30px, rgba(102, 126, 234, 0.4), transparent);
    background-repeat: repeat;
    background-size: 200px 100px;
    animation: particleFloat 15s linear infinite;
    z-index: -1;
    opacity: 0.8;
}

@keyframes particleFloat {
    0% {
        transform: translateY(0) translateX(0);
    }
    100% {
        transform: translateY(-100px) translateX(50px);
    }
}

/* Subtle noise texture overlay */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200"><filter id="noiseFilter"><feTurbulence type="fractalNoise" baseFrequency="0.9" numOctaves="4" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23noiseFilter)" opacity="0.03"/></svg>');
    pointer-events: none;
    z-index: 1;
    animation: noiseFade 10s ease-in-out infinite;
}

@keyframes noiseFade {
    0%, 100% {
        opacity: 0.03;
    }
    50% {
        opacity: 0.06;
    }
}

@keyframes backgroundShift {
    0%, 100% {
        transform: translateX(0) translateY(0) scale(1);
        opacity: 1;
    }
    25% {
        transform: translateX(-20px) translateY(-10px) scale(1.05);
        opacity: 0.8;
    }
    50% {
        transform: translateX(10px) translateY(-20px) scale(0.95);
        opacity: 0.9;
    }
    75% {
        transform: translateX(-10px) translateY(10px) scale(1.02);
        opacity: 0.85;
    }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo .logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #cbd5e1;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    padding: 8px 16px;
    border-radius: 8px;
}

.nav-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 1px;
}

.nav-link:hover::after {
    width: 60%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 24px;
    height: 2px;
    background: #ffffff;
    margin: 4px 0;
    transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 2px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: #0f172a;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, transparent 30%, rgba(102, 126, 234, 0.08) 50%, transparent 70%),
        linear-gradient(-45deg, transparent 30%, rgba(118, 75, 162, 0.08) 50%, transparent 70%);
    animation: heroPattern 25s ease-in-out infinite;
    z-index: 1;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 10% 20%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(118, 75, 162, 0.15) 0%, transparent 50%);
    animation: heroGlow 30s ease-in-out infinite;
    z-index: 1;
}

@keyframes heroPattern {
    0%, 100% {
        transform: translateX(0) translateY(0) rotate(0deg);
        opacity: 0.5;
    }
    25% {
        transform: translateX(-20px) translateY(-10px) rotate(1deg);
        opacity: 0.7;
    }
    50% {
        transform: translateX(10px) translateY(-20px) rotate(-1deg);
        opacity: 0.6;
    }
    75% {
        transform: translateX(-10px) translateY(10px) rotate(0.5deg);
        opacity: 0.8;
    }
}

@keyframes heroGlow {
    0%, 100% {
        transform: scale(1) rotate(0deg);
        opacity: 0.3;
    }
    33% {
        transform: scale(1.1) rotate(120deg);
        opacity: 0.5;
    }
    66% {
        transform: scale(0.9) rotate(240deg);
        opacity: 0.4;
    }
}

/* Tech Background Animations */
.tech-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 2;
    overflow: hidden;
}

/* Animated Code Snippets */
.code-snippets {
    position: absolute;
    width: 100%;
    height: 100%;
}

.code-snippet {
    position: absolute;
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: 8px;
    padding: 8px 12px;
    font-family: 'Courier New', monospace;
    font-size: 12px;
    color: rgba(102, 126, 234, 0.8);
    backdrop-filter: blur(10px);
    animation: floatCode 20s ease-in-out infinite;
    opacity: 0.7;
}

.code-snippet:nth-child(1) {
    top: 10%;
    left: 5%;
    animation-delay: 0s;
}

.code-snippet:nth-child(2) {
    top: 20%;
    right: 10%;
    animation-delay: 3s;
}

.code-snippet:nth-child(3) {
    top: 60%;
    left: 8%;
    animation-delay: 6s;
}

.code-snippet:nth-child(4) {
    top: 70%;
    right: 15%;
    animation-delay: 9s;
}

.code-snippet:nth-child(5) {
    top: 40%;
    left: 50%;
    animation-delay: 12s;
}

.code-snippet:nth-child(6) {
    top: 80%;
    right: 5%;
    animation-delay: 15s;
}

@keyframes floatCode {
    0%, 100% {
        transform: translateY(0) translateX(0) rotate(0deg);
        opacity: 0.7;
    }
    25% {
        transform: translateY(-20px) translateX(10px) rotate(1deg);
        opacity: 0.9;
    }
    50% {
        transform: translateY(-10px) translateX(-15px) rotate(-1deg);
        opacity: 0.8;
    }
    75% {
        transform: translateY(-30px) translateX(5px) rotate(0.5deg);
        opacity: 0.6;
    }
}

/* Circuit Board Pattern */
.circuit-board {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.3;
    animation: circuitPulse 15s ease-in-out infinite;
}

.circuit-svg {
    width: 100%;
    height: 100%;
    opacity: 0.4;
}

@keyframes circuitPulse {
    0%, 100% {
        opacity: 0.3;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.05);
    }
}

/* Binary Code Rain */
.binary-rain {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.binary-column {
    position: absolute;
    top: -100%;
    width: 20px;
    height: 200%;
    background: linear-gradient(to bottom, 
        transparent 0%, 
        rgba(102, 126, 234, 0.8) 20%, 
        rgba(118, 75, 162, 0.8) 40%, 
        rgba(102, 126, 234, 0.8) 60%, 
        rgba(118, 75, 162, 0.8) 80%, 
        transparent 100%);
    animation: binaryFall 8s linear infinite;
    opacity: 0.6;
}

.binary-column:nth-child(1) {
    left: 10%;
    animation-delay: 0s;
    animation-duration: 8s;
}

.binary-column:nth-child(2) {
    left: 25%;
    animation-delay: 1s;
    animation-duration: 10s;
}

.binary-column:nth-child(3) {
    left: 40%;
    animation-delay: 2s;
    animation-duration: 7s;
}

.binary-column:nth-child(4) {
    left: 55%;
    animation-delay: 3s;
    animation-duration: 9s;
}

.binary-column:nth-child(5) {
    left: 70%;
    animation-delay: 4s;
    animation-duration: 6s;
}

.binary-column:nth-child(6) {
    left: 85%;
    animation-delay: 5s;
    animation-duration: 11s;
}

.binary-column:nth-child(7) {
    left: 15%;
    animation-delay: 6s;
    animation-duration: 8.5s;
}

.binary-column:nth-child(8) {
    left: 80%;
    animation-delay: 7s;
    animation-duration: 7.5s;
}

@keyframes binaryFall {
    0% {
        transform: translateY(-100%);
        opacity: 0;
    }
    10% {
        opacity: 0.6;
    }
    90% {
        opacity: 0.6;
    }
    100% {
        transform: translateY(100vh);
        opacity: 0;
    }
}

/* Floating Tech Icons */
.floating-tech-icons {
    position: absolute;
    width: 100%;
    height: 100%;
}

.tech-icon {
    position: absolute;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: 50%;
    backdrop-filter: blur(10px);
    animation: floatIcon 25s ease-in-out infinite;
    opacity: 0.7;
}

.tech-icon i {
    font-size: 18px;
    color: rgba(102, 126, 234, 0.8);
}

.tech-icon:nth-child(1) {
    top: 15%;
    left: 20%;
    animation-delay: 0s;
}

.tech-icon:nth-child(2) {
    top: 25%;
    right: 25%;
    animation-delay: 2s;
}

.tech-icon:nth-child(3) {
    top: 45%;
    left: 10%;
    animation-delay: 4s;
}

.tech-icon:nth-child(4) {
    top: 55%;
    right: 20%;
    animation-delay: 6s;
}

.tech-icon:nth-child(5) {
    top: 75%;
    left: 30%;
    animation-delay: 8s;
}

.tech-icon:nth-child(6) {
    top: 35%;
    right: 10%;
    animation-delay: 10s;
}

.tech-icon:nth-child(7) {
    top: 65%;
    left: 70%;
    animation-delay: 12s;
}

.tech-icon:nth-child(8) {
    top: 85%;
    right: 40%;
    animation-delay: 14s;
}

.tech-icon:nth-child(9) {
    top: 5%;
    left: 60%;
    animation-delay: 16s;
}

.tech-icon:nth-child(10) {
    top: 50%;
    right: 50%;
    animation-delay: 18s;
}

@keyframes floatIcon {
    0%, 100% {
        transform: translateY(0) translateX(0) rotate(0deg) scale(1);
        opacity: 0.7;
    }
    25% {
        transform: translateY(-30px) translateX(20px) rotate(90deg) scale(1.1);
        opacity: 0.9;
    }
    50% {
        transform: translateY(-15px) translateX(-25px) rotate(180deg) scale(0.9);
        opacity: 0.8;
    }
    75% {
        transform: translateY(-40px) translateX(10px) rotate(270deg) scale(1.05);
        opacity: 0.6;
    }
}

/* Animated Grid Lines */
.tech-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.2;
}

.grid-line {
    position: absolute;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(102, 126, 234, 0.6) 50%, 
        transparent 100%);
    animation: gridPulse 12s ease-in-out infinite;
}

.grid-line.horizontal {
    width: 100%;
    height: 1px;
    left: 0;
}

.grid-line.vertical {
    height: 100%;
    width: 1px;
    top: 0;
    background: linear-gradient(180deg, 
        transparent 0%, 
        rgba(118, 75, 162, 0.6) 50%, 
        transparent 100%);
}

.grid-line.horizontal:nth-child(1) {
    top: 20%;
    animation-delay: 0s;
}

.grid-line.horizontal:nth-child(2) {
    top: 40%;
    animation-delay: 2s;
}

.grid-line.horizontal:nth-child(3) {
    top: 60%;
    animation-delay: 4s;
}

.grid-line.horizontal:nth-child(4) {
    top: 80%;
    animation-delay: 6s;
}

.grid-line.vertical:nth-child(5) {
    left: 20%;
    animation-delay: 1s;
}

.grid-line.vertical:nth-child(6) {
    left: 40%;
    animation-delay: 3s;
}

.grid-line.vertical:nth-child(7) {
    left: 60%;
    animation-delay: 5s;
}

.grid-line.vertical:nth-child(8) {
    left: 80%;
    animation-delay: 7s;
}

@keyframes gridPulse {
    0%, 100% {
        opacity: 0.2;
        transform: scaleX(1);
    }
    50% {
        opacity: 0.6;
        transform: scaleX(1.1);
    }
}

/* Data Flow Lines */
.data-flow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.flow-line {
    position: absolute;
    height: 2px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(102, 126, 234, 0.8) 20%, 
        rgba(118, 75, 162, 0.8) 50%, 
        rgba(102, 126, 234, 0.8) 80%, 
        transparent 100%);
    animation: dataFlow 10s linear infinite;
    opacity: 0.6;
}

.flow-line:nth-child(1) {
    top: 30%;
    left: -100%;
    width: 200px;
    animation-delay: 0s;
    animation-duration: 8s;
}

.flow-line:nth-child(2) {
    top: 50%;
    right: -100%;
    width: 150px;
    animation-delay: 2s;
    animation-duration: 10s;
    animation-direction: reverse;
}

.flow-line:nth-child(3) {
    top: 70%;
    left: -100%;
    width: 180px;
    animation-delay: 4s;
    animation-duration: 12s;
}

.flow-line:nth-child(4) {
    top: 20%;
    right: -100%;
    width: 120px;
    animation-delay: 6s;
    animation-duration: 9s;
    animation-direction: reverse;
}

@keyframes dataFlow {
    0% {
        transform: translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 0.6;
    }
    90% {
        opacity: 0.6;
    }
    100% {
        transform: translateX(calc(100vw + 200px));
        opacity: 0;
    }
}


.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 15;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    color: #ffffff;
    letter-spacing: -0.04em;
}

.highlight {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: #cbd5e1;
    margin-bottom: 1.5rem;
    font-weight: 500;
    letter-spacing: -0.01em;
}

.hero-description {
    font-size: 1.1rem;
    color: #94a3b8;
    margin-bottom: 2.5rem;
    line-height: 1.7;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 16px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-block;
    border: 2px solid transparent;
    letter-spacing: 0.01em;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 14px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn-loading {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-loading i {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.btn-secondary {
    background: transparent;
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-container {
    position: relative;
    width: 550px;
    height: 550px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
    animation: float 6s ease-in-out infinite;
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    opacity: 0;
    transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.image-container:hover .profile-img {
    transform: scale(1.05);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.image-container:hover .image-overlay {
    opacity: 1;
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}


.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-arrow {
    width: 2px;
    height: 30px;
    background: #ffffff;
    position: relative;
    animation: scroll 2s infinite;
}

.scroll-arrow::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: -4px;
    width: 10px;
    height: 10px;
    border-right: 2px solid #ffffff;
    border-bottom: 2px solid #ffffff;
    transform: rotate(45deg);
}

@keyframes scroll {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Section Styles */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: #ffffff;
    letter-spacing: -0.03em;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #94a3b8;
    max-width: 600px;
    margin: 0 auto;
    font-weight: 400;
}

/* About Section */
.about {
    background: #1e293b;
}

/* Skills Section */
.skills {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

/* Main sections container for mobile ordering */
.main-sections-container {
    display: flex;
    flex-direction: column;
}

/* Projects Section */
.projects {
    background: white;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text p {
    font-size: 1.1rem;
    color: #cbd5e1;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: #334155;
    border-radius: 16px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.stat-item:hover {
    transform: translateY(-8px) scale(1.05);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-item h3 {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: #cbd5e1;
    font-weight: 500;
}

/* Skills Section */
.skills {
    background: #0f172a;
    position: relative;
    overflow: hidden;
}

.skills::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(102, 126, 234, 0.2) 1px, transparent 1px),
        linear-gradient(90deg, rgba(102, 126, 234, 0.2) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
    z-index: 1;
    opacity: 0.4;
}

@keyframes gridMove {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    position: relative;
    z-index: 10;
}

.skill-category {
    background: #1e293b;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.skill-category:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.category-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #ffffff;
    text-align: center;
}

.skill-items {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem;
    background: #334155;
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.skill-item:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    transform: translateX(5px) scale(1.02);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-item i {
    font-size: 1.2rem;
    color: #cbd5e1;
    transition: color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-item:hover i {
    color: white;
}

.skill-item span {
    font-weight: 500;
}

/* PS Chapters Section */
.ps-chapters {
    background: #0f172a;
    position: relative;
    overflow: hidden;
}

.ps-chapters::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 20%, rgba(118, 75, 162, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(102, 126, 234, 0.1) 0%, transparent 50%);
    animation: psGlow 25s ease-in-out infinite;
    z-index: 1;
}

@keyframes psGlow {
    0%, 100% {
        transform: scale(1) rotate(0deg);
        opacity: 0.4;
    }
    50% {
        transform: scale(1.1) rotate(180deg);
        opacity: 0.7;
    }
}

.ps-content {
    position: relative;
    z-index: 10;
}

.ps-description {
    text-align: center;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.ps-description h3 {
    font-size: 2rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ps-description p {
    font-size: 1.1rem;
    color: #cbd5e1;
    line-height: 1.7;
    margin-bottom: 0;
}

.ps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.ps-category {
    background: #1e293b;
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
}

.ps-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.1), transparent);
    transition: left 0.5s ease;
}

.ps-category:hover::before {
    left: 100%;
}

.ps-category:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
    border-color: rgba(102, 126, 234, 0.3);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.ps-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 1.5rem;
    color: white;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.ps-category:hover .ps-icon {
    transform: scale(1.1) rotate(360deg);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.ps-category h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 1rem;
    transition: color 0.3s ease;
}

.ps-category:hover h4 {
    color: #667eea;
}

.ps-category p {
    color: #cbd5e1;
    line-height: 1.6;
    font-size: 0.95rem;
    margin: 0;
}

/* Projects Section */
.projects {
    background: #1e293b;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: #334155;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.project-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-image {
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-placeholder {
    color: white;
    font-size: 3rem;
}

.project-content {
    padding: 2rem;
}

.project-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #ffffff;
}

.project-description {
    color: #cbd5e1;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tech-tag {
    background: #475569;
    color: #cbd5e1;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: #475569;
}

.project-link:hover {
    color: #ffffff;
    background: #64748b;
    border-color: rgba(255, 255, 255, 0.2);
}

/* Experience Section */
.experience {
    background: #0f172a;
    position: relative;
    overflow: hidden;
}

.experience::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 25% 25%, rgba(118, 75, 162, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(102, 126, 234, 0.12) 0%, transparent 50%);
    animation: experienceGlow 35s ease-in-out infinite;
    z-index: 1;
}

@keyframes experienceGlow {
    0%, 100% {
        transform: scale(1) rotate(0deg);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.2) rotate(180deg);
        opacity: 0.8;
    }
}

.timeline {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 10;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #667eea;
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    width: 50%;
}

.timeline-item:nth-child(odd) {
    left: 0;
    padding-right: 3rem;
}

.timeline-item:nth-child(even) {
    left: 50%;
    padding-left: 3rem;
}

.timeline-marker {
    position: absolute;
    top: 0;
    width: 20px;
    height: 20px;
    background: #667eea;
    border-radius: 50%;
    border: 4px solid white;
    box-shadow: 0 0 0 4px #667eea;
}

.timeline-item:nth-child(odd) .timeline-marker {
    right: -10px;
}

.timeline-item:nth-child(even) .timeline-marker {
    left: -10px;
}

.timeline-content {
    background: #1e293b;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

.timeline-content:hover {
    transform: translateY(-5px);
}

.timeline-header {
    margin-bottom: 1rem;
}

.timeline-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.timeline-company {
    color: #667eea;
    font-weight: 500;
    margin-right: 1rem;
}

.timeline-date {
    color: #cbd5e1;
    font-size: 0.9rem;
}

.timeline-description {
    color: #cbd5e1;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.timeline-achievements {
    list-style: none;
}

.timeline-achievements li {
    color: #cbd5e1;
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.5rem;
}

.timeline-achievements li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

/* Education Section */
.education {
    background: #1e293b;
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.education-item {
    background: #334155;
    padding: 2rem;
    border-radius: 15px;
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    transition: transform 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.education-item:hover {
    transform: translateY(-5px);
}

.education-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.education-content {
    flex: 1;
}

.education-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.education-institution {
    color: #667eea;
    font-weight: 500;
    margin-bottom: 0.3rem;
}

.education-date {
    color: #cbd5e1;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    display: block;
}

.education-description {
    color: #cbd5e1;
    line-height: 1.6;
}

/* Contact Section */
.contact {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 20%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(118, 75, 162, 0.15) 0%, transparent 50%),
        linear-gradient(45deg, transparent 40%, rgba(102, 126, 234, 0.08) 50%, transparent 60%);
    animation: contactPattern 40s ease-in-out infinite;
    z-index: 1;
}

@keyframes contactPattern {
    0%, 100% {
        transform: translateX(0) translateY(0) rotate(0deg);
        opacity: 0.6;
    }
    25% {
        transform: translateX(-30px) translateY(-15px) rotate(2deg);
        opacity: 0.8;
    }
    50% {
        transform: translateX(15px) translateY(-30px) rotate(-2deg);
        opacity: 0.7;
    }
    75% {
        transform: translateX(-15px) translateY(15px) rotate(1deg);
        opacity: 0.9;
    }
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
    position: relative;
    z-index: 10;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

.contact-details h4 {
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.3rem;
}

.contact-details p {
    color: #cbd5e1;
}

.contact-form {
    background: #334155;
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    background: #475569;
    color: #ffffff;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    background: #64748b;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    position: relative;
    z-index: 100;
    pointer-events: auto;
}

.social-link {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    cursor: pointer;
    pointer-events: auto;
    position: relative;
    z-index: 100;
}

.social-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

/* Footer */
.footer {
    background: #0f172a;
    color: #cbd5e1;
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content p {
    margin-bottom: 0.5rem;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: #1e293b;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.3);
        padding: 2rem 0;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        margin: 1rem 0;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .skills-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .skill-items {
        grid-template-columns: 1fr;
    }

    .ps-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .ps-description h3 {
        font-size: 1.5rem;
    }

    .ps-description p {
        font-size: 1rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        width: 100%;
        left: 0 !important;
        padding-left: 3rem !important;
        padding-right: 0 !important;
    }

    .timeline-marker {
        left: 10px !important;
        right: auto !important;
    }

    .education-grid {
        grid-template-columns: 1fr;
    }

    .education-item {
        flex-direction: column;
        text-align: center;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .image-container {
        width: 350px;
        height: 350px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 250px;
        text-align: center;
    }

    .image-container {
        width: 300px;
        height: 300px;
    }

    .project-links {
        flex-direction: column;
    }

    .social-links {
        flex-wrap: wrap;
    }
    
    /* Fix section order in mobile view */
    .main-sections-container #projects {
        order: 1;
    }
    
    .main-sections-container #experience {
        order: 2;
    }
    
    .main-sections-container #education {
        order: 3;
    }
}

/* Professional UI/UX Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInFromBottom {
    from {
        opacity: 0;
        transform: translateY(60px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: calc(200px + 100%) 0;
    }
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
    animation: fadeInLeft 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.slide-in-right {
    opacity: 0;
    transform: translateX(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
    animation: fadeInRight 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.scale-in {
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
    animation: scaleIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.slide-up {
    opacity: 0;
    transform: translateY(60px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-up.visible {
    opacity: 1;
    transform: translateY(0);
    animation: slideInFromBottom 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* Staggered Animation Delays */
.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }
.animate-delay-5 { animation-delay: 0.5s; }
.animate-delay-6 { animation-delay: 0.6s; }

/* Loading Animation */
@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* AI Chat Widget Styles */
.ai-chat-widget {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 350px;
    height: 500px;
    background: #1e293b;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: none;
    flex-direction: column;
    z-index: 10000;
    backdrop-filter: blur(20px);
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.ai-chat-widget.active {
    display: flex;
    transform: translateY(0);
    opacity: 1;
}

.chat-header {
    display: flex;
    align-items: center;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px 20px 0 0;
    color: white;
}

.chat-avatar {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
    font-size: 18px;
}

.chat-info {
    flex: 1;
}

.chat-info h4 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
}

.chat-status {
    font-size: 12px;
    opacity: 0.8;
    display: flex;
    align-items: center;
}

.chat-status::before {
    content: '';
    width: 8px;
    height: 8px;
    background: #4ade80;
    border-radius: 50%;
    margin-right: 6px;
    animation: pulse 2s infinite;
}

.chat-close {
    background: none;
    border: none;
    color: white;
    font-size: 18px;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: background 0.3s ease;
}

.chat-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.chat-messages::-webkit-scrollbar {
    width: 4px;
}

.chat-messages::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: rgba(102, 126, 234, 0.5);
    border-radius: 2px;
}

.message {
    display: flex;
    gap: 10px;
    animation: messageSlideIn 0.3s ease-out;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

.ai-message .message-avatar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.user-message {
    flex-direction: row-reverse;
}

.user-message .message-avatar {
    background: #334155;
    color: #cbd5e1;
}

.message-content {
    max-width: 80%;
    background: #334155;
    padding: 12px 16px;
    border-radius: 18px;
    position: relative;
}

.user-message .message-content {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.message-content p {
    margin: 0;
    font-size: 14px;
    line-height: 1.4;
}

.message-time {
    font-size: 11px;
    opacity: 0.6;
    display: block;
    margin-top: 4px;
}

.chat-input-container {
    padding: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.chat-input-wrapper {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

#chatInput {
    flex: 1;
    background: #334155;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 25px;
    padding: 12px 16px;
    color: white;
    font-size: 14px;
    outline: none;
    transition: border-color 0.3s ease;
}

#chatInput:focus {
    border-color: #667eea;
}

#chatInput::placeholder {
    color: #94a3b8;
}

.chat-send-btn {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

.chat-send-btn:hover {
    transform: scale(1.05);
}

.chat-suggestions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.suggestion-btn {
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: 20px;
    padding: 6px 12px;
    color: #cbd5e1;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.suggestion-btn:hover {
    background: rgba(102, 126, 234, 0.2);
    border-color: rgba(102, 126, 234, 0.5);
    color: white;
}

/* AI Chat Toggle Button */
.ai-chat-toggle {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 10001;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ai-chat-toggle:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 12px 35px rgba(102, 126, 234, 0.4);
}

.ai-chat-toggle.minimized {
    width: 40px;
    height: 40px;
    font-size: 16px;
    opacity: 0.7;
    bottom: 30px;
    right: 30px;
}
}

.chat-notification {
    position: absolute;
    top: -5px;
    right: -5px;
    background: #ef4444;
    color: white;
    font-size: 12px;
    font-weight: bold;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: notificationPulse 2s infinite;
}

@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes notificationPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* Responsive Design for Chat */
@media (max-width: 768px) {
    .ai-chat-widget {
        width: 300px;
        height: 400px;
        bottom: 80px;
        right: 20px;
        left: auto;
    }
    
    .ai-chat-toggle {
        bottom: 90px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 18px;
    }
    
    .chat-header {
        padding: 15px;
    }
    
    .chat-avatar {
        width: 35px;
        height: 35px;
        font-size: 16px;
    }
    
    .chat-info h4 {
        font-size: 14px;
    }
    
    .chat-status {
        font-size: 11px;
    }
    
    .chat-messages {
        padding: 15px;
        gap: 12px;
    }
    
    .message-content {
        max-width: 85%;
        padding: 10px 14px;
    }
    
    .message-content p {
        font-size: 13px;
    }
    
    .message-time {
        font-size: 10px;
    }
    
    .chat-input-container {
        padding: 15px;
    }
    
    #chatInput {
        padding: 10px 14px;
        font-size: 13px;
    }
    
    .chat-send-btn {
        width: 40px;
        height: 40px;
        font-size: 14px;
    }
    
    .suggestion-btn {
        padding: 5px 10px;
        font-size: 11px;
    }
}

@media (max-width: 480px) {
    .ai-chat-widget {
        width: 280px;
        height: 380px;
        bottom: 70px;
        right: 15px;
    }
    
    .ai-chat-toggle {
        bottom: 85px;
        right: 15px;
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .chat-header {
        padding: 12px;
    }
    
    .chat-avatar {
        width: 30px;
        height: 30px;
        font-size: 14px;
    }
    
    .chat-info h4 {
        font-size: 13px;
    }
    
    .chat-messages {
        padding: 12px;
        gap: 10px;
    }
    
    .message-content {
        padding: 8px 12px;
    }
    
    .message-content p {
        font-size: 12px;
    }
    
    .chat-input-container {
        padding: 12px;
    }
    
    #chatInput {
        padding: 8px 12px;
        font-size: 12px;
    }
    
    .chat-send-btn {
        width: 35px;
        height: 35px;
        font-size: 12px;
    }
    
    .suggestion-btn {
        padding: 4px 8px;
        font-size: 10px;
    }
}