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

:root {
    --rgb-1: rgba(0, 32, 96, 0.9);      /* Xanh đậm nhất */
    --rgb-2: rgba(0, 48, 135, 0.8);     /* Xanh đậm */
    --rgb-3: rgba(0, 71, 171, 0.7);     /* Xanh dương */
    --primary-gradient: linear-gradient(135deg, var(--rgb-1) 0%, var(--rgb-2) 50%, var(--rgb-3) 100%);
    --secondary-gradient: linear-gradient(135deg, rgba(0, 32, 96, 0.9) 0%, rgba(0, 71, 171, 0.7) 100%);
    --accent-gradient: linear-gradient(135deg, rgba(0, 48, 135, 0.8) 0%, rgba(0, 71, 171, 0.6) 100%);
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.15);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    --text-primary: rgba(255, 255, 255, 0.95);
    --text-secondary: rgba(255, 255, 255, 0.8);
    --text-muted: rgba(255, 255, 255, 0.6);
    --blur-amount: 15px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--primary-gradient);
    background-size: 400% 400%;
    animation: gradientShift 20s ease infinite;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(120, 219, 255, 0.3) 0%, transparent 50%);
    backdrop-filter: blur(1px);
    z-index: -1;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-text {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, rgba(100, 200, 255, 0.9), rgba(150, 220, 255, 0.8));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 10px rgba(100, 200, 255, 0.3));
    position: relative;
}

.logo-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

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

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

#three-intro {
    position: absolute;
    inset: 0; /* fill the hero background */
    z-index: -1;
    pointer-events: none;
}

.hero-bg-media {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    filter: brightness(0.6) blur(2px);
    pointer-events: none;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    animation: float 6s ease-in-out infinite;
}

.orb-1 {
    width: 300px;
    height: 300px;
    background: var(--secondary-gradient);
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.orb-2 {
    width: 200px;
    height: 200px;
    background: var(--accent-gradient);
    top: 60%;
    right: 20%;
    animation-delay: 2s;
}

.orb-3 {
    width: 150px;
    height: 150px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    bottom: 20%;
    left: 50%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
    text-align: center;
    max-width: 800px;
    z-index: 1;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.title-line {
    display: block;
    position: relative;
    background-image: linear-gradient(135deg, #4facfe, #00f2fe, #a18cd1, #fbc2eb, #fee140);
    background-size: 200% 200%;
    background-position: 0% 0%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: slideInUp 1s ease-out forwards;
    opacity: 0;
    transition: background-position 0.6s ease, text-shadow 0.4s ease, filter 0.4s ease;
    will-change: background-position;
}

/* Gradient + glassy glow on hover */
.title-line:hover {
    background-size: 200% 200%;
    background-position: 100% 0%;
    text-shadow: 0 6px 30px rgba(255, 255, 255, 0.25);
}

.title-line::after {
    content: '';
    position: absolute;
    inset: -6px;
    background: radial-gradient(60% 60% at 50% 50%, rgba(255,255,255,0.15), transparent 70%);
    border-radius: 12px;
    filter: blur(12px);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.title-line:hover::after {
    opacity: 1;
}

.title-line:nth-child(2) {
    animation-delay: 0.2s;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease-out 0.4s forwards;
    opacity: 0;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
    animation: fadeInUp 1s ease-out 0.6s forwards;
    opacity: 0;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 4rem;
    animation: fadeInUp 1s ease-out 0.8s forwards;
    opacity: 0;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--glass-border);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--glass-bg);
    color: var(--text-primary);
    box-shadow: var(--glass-shadow);
}

.btn-secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--glass-border);
}

.btn-primary:hover,
.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    background: rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: var(--glass-bg);
    color: var(--text-primary);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    animation: fadeInUp 1s ease-out 1s forwards;
    opacity: 0;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.8rem;
    animation: bounce 2s infinite;
}

.scroll-line {
    width: 2px;
    height: 30px;
    background: var(--text-muted);
    border-radius: 2px;
}

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

/* Section Styles */
section {
    padding: 6rem 0;
    position: relative;
}

/* Partners Section */
.partners {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    border-top: 1px solid var(--glass-border);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    align-items: center;
    justify-items: center; /* center items in their grid cells */
}

.partner-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 1rem;
    box-shadow: var(--glass-shadow);
    transition: var(--transition);
    text-align: center; /* center text under large logo */
    width: min(320px, 90%);
}

.partner-link {
    display: flex;
    flex-direction: column; /* stack logo above name */
    gap: 0.75rem;
    align-items: center;
    text-decoration: none;
    color: inherit;
}

.partner-logo {
    width: clamp(140px, 30vw, 260px);
    height: clamp(140px, 30vw, 260px);
    border-radius: 8px;
    background: var(--secondary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.partner-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 12px;
}

.partner-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.partner-name {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-top: 0.5rem;
}

.partner-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.partner-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 80px rgba(0,0,0,0.35);
}

.partner-link:focus {
    outline: 2px solid rgba(255,255,255,0.08);
    outline-offset: 4px;
}

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

.section-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    border-top: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
}

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

.about-text {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.text-block h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

    .text-block p {
        color: var(--text-secondary);
        line-height: 1.8;
    }

    .about-cards {
        display: grid;
        gap: 1.5rem;
    }

    .about-card {
        background: var(--glass-bg);
        backdrop-filter: blur(var(--blur-amount));
        border: 1px solid var(--glass-border);
        border-radius: 20px;
        padding: 2rem;
        box-shadow: var(--glass-shadow);
    }

    .about-card .text-block + .text-block {
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        margin-top: 1rem;
        padding-top: 1rem;
    }

.about-visual {
    position: relative;
}

.image-container {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.profile-image {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.image-container:hover .image-overlay {
    opacity: 1;
}

.overlay-content {
    text-align: center;
    color: white;
}

.overlay-content i {
    font-size: 2rem;
}

.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.floating-card {
    position: absolute;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
    animation: floatCard 3s ease-in-out infinite;
}

.floating-card:nth-child(1) {
    top: 10%;
    right: -20%;
    animation-delay: 0s;
}

.floating-card:nth-child(2) {
    bottom: 30%;
    left: -20%;
    animation-delay: 1s;
}

.floating-card:nth-child(3) {
    top: 60%;
    right: -10%;
    animation-delay: 2s;
}

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

/* Skills Section */
.skills {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
}

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

.skill-category {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--glass-shadow);
    transition: var(--transition);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.category-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-primary);
    text-align: center;
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.skill-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(5px);
}

.skill-icon {
    width: 50px;
    height: 50px;
    background: var(--secondary-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.skill-info {
    flex: 1;
}

.skill-info h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.skill-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.skill-progress {
    height: 100%;
    background: var(--secondary-gradient);
    border-radius: 3px;
    transition: width 1.5s ease-in-out;
    position: relative;
}

.skill-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Rainbow gradient scroll for title hover */
@keyframes rainbowShift {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

.skill-level {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Portfolio Section */
.portfolio {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
}

.portfolio-filter {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.filter-btn {
    padding: 0.8rem 1.5rem;
    background: transparent;
    border: 1px solid var(--glass-border);
    border-radius: 25px;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.portfolio-item {
    display: flex;
    flex-direction: column;
    transition: all 0.5s ease;
    order: 0;
}

.portfolio-item {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--glass-shadow);
    transition: var(--transition);
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.portfolio-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.portfolio-image {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    width: 100%;
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-image img {
    transform: scale(1.05);
}

.web-preview {
    width: 100%;
    height: 100%;
    background: var(--glass-bg);
    border-radius: 10px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
}

.browser-bar {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.browser-dots {
    display: flex;
    gap: 0.5rem;
}

.browser-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-muted);
}

.browser-dots span:nth-child(1) { background: #ff5f57; }
.browser-dots span:nth-child(2) { background: #ffbd2e; }
.browser-dots span:nth-child(3) { background: #28ca42; }

.web-content {
    flex: 1;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 1rem;
}

.web-header {
    height: 20px;
    background: var(--text-muted);
    border-radius: 4px;
    margin-bottom: 1rem;
}

.web-body {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.web-line {
    height: 8px;
    background: var(--text-muted);
    border-radius: 4px;
}

.web-line.short {
    width: 60%;
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.overlay-content {
    text-align: center;
    color: white;
}

.overlay-content h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.overlay-content p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1.5rem;
}

.overlay-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn-overlay {
    width: 50px;
    height: 50px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: var(--transition);
}

.btn-overlay:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.portfolio-content {
    padding: 2rem;
}

.portfolio-category {
    display: inline-block;
    background: var(--secondary-gradient);
    color: white;
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.portfolio-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.portfolio-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.portfolio-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    color: var(--text-secondary);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.portfolio-cta {
    text-align: center;
}

/* Contact Section */
.contact {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
}

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

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    box-shadow: var(--glass-shadow);
    transition: var(--transition);
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--secondary-gradient);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.contact-details p {
    color: var(--text-secondary);
}

.contact-form {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--glass-shadow);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.1);
}

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

/* Footer */
.footer {
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(var(--blur-amount));
    border-top: 1px solid var(--glass-border);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-brand p {
    color: var(--text-secondary);
    line-height: 1.6;
}

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

.link-group h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.link-group ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.link-group a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.link-group a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--glass-border);
    color: var(--text-muted);
}

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

/* Transaction Button Styles */
.transaction-btn-group {
    position: relative;
    display: inline-block;
    margin-left: 10px;
}

.btn-add-transaction {
    background: var(--primary-color);
    color: white;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-add-transaction:hover {
    background: var(--primary-color-dark);
    transform: scale(1.05);
}

.transaction-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    display: none;
    z-index: 100;
    min-width: 200px;
}

.transaction-dropdown.show {
    display: block;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    width: 100%;
    border: none;
    background: none;
    cursor: pointer;
    transition: background 0.2s;
}

.dropdown-item:hover {
    background: #f5f5f5;
}

.dropdown-item i {
    width: 16px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--glass-bg);
        backdrop-filter: blur(var(--blur-amount));
        flex-direction: column;
        justify-content: start;
        padding-top: 2rem;
        transition: var(--transition);
    }

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

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

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

    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }

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

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

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

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

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

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

    .container {
        padding: 0 1rem;
    }

    .nav-container {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }

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

    .btn-primary,
    .btn-secondary {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }

    .portfolio-filter {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .filter-btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.6s ease;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}