/*
 * Modern Portfolio Design System
 * Premium aesthetics with animations, glassmorphism, and smooth transitions
 */

/* ============================================
   CSS VARIABLES / DESIGN TOKENS
   ============================================ */

:root {
    /* Primary Colors */
    --primary-start: #667eea;
    --primary-end: #764ba2;
    --primary-gradient: linear-gradient(135deg, var(--primary-start), var(--primary-end));

    /* Accent Colors */
    --accent-cyan: #06b6d4;
    --accent-pink: #ec4899;
    --accent-purple: #8b5cf6;
    --accent-orange: #f97316;

    /* Light Mode */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;

    /* Dark Mode */
    --dark-bg-primary: #0f172a;
    --dark-bg-secondary: #1e293b;
    --dark-bg-tertiary: #334155;
    --dark-text-primary: #f8fafc;
    --dark-text-secondary: #cbd5e1;
    --dark-text-muted: #64748b;
    --dark-border-color: #334155;

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 40px rgba(102, 126, 234, 0.3);

    /* Typography */
    --font-display: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Dark Mode Overrides */
[data-bs-theme="dark"] {
    --bg-primary: var(--dark-bg-primary);
    --bg-secondary: var(--dark-bg-secondary);
    --bg-tertiary: var(--dark-bg-tertiary);
    --text-primary: var(--dark-text-primary);
    --text-secondary: var(--dark-text-secondary);
    --text-muted: var(--dark-text-muted);
    --border-color: var(--dark-border-color);
    --glass-bg: rgba(30, 41, 59, 0.8);
    --glass-border: rgba(255, 255, 255, 0.1);
}

/* ============================================
   BASE STYLES
   ============================================ */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-slow), color var(--transition-slow);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
}

/* ============================================
   ANIMATED GRADIENT BACKGROUND
   ============================================ */

.gradient-bg {
    position: relative;
    background: linear-gradient(-45deg, #667eea, #764ba2, #06b6d4, #8b5cf6);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {

    0%,
    100% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }
}

/* Mesh gradient overlay */
.mesh-overlay {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 30%, rgba(102, 126, 234, 0.4) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(118, 75, 162, 0.4) 0%, transparent 50%),
        radial-gradient(ellipse at 40% 80%, rgba(6, 182, 212, 0.3) 0%, transparent 40%);
    pointer-events: none;
}

/* ============================================
   GLASSMORPHISM COMPONENTS
   ============================================ */

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--glass-shadow);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.glass-nav {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

/* ============================================
   NAVIGATION
   ============================================ */

.modern-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) var(--space-xl);
    transition: all var(--transition-base);
}

.modern-nav.scrolled {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: var(--space-lg);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: var(--space-sm) 0;
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary-start);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: width var(--transition-base);
}

.nav-link:hover::after {
    width: 100%;
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: var(--space-3xl) var(--space-xl);
    overflow: hidden;
}

.hero-content {
    text-align: center;
    z-index: 10;
    max-width: 800px;
}

.hero-avatar {
    width: 160px;
    height: 160px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 4px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 0 60px rgba(102, 126, 234, 0.5);
    margin-bottom: var(--space-xl);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-20px);
    }
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: var(--space-md);
    color: #fff;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.hero-title .highlight {
    background: linear-gradient(135deg, #fff, #e0e7ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: inline-flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    justify-content: center;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: #fff;
    color: var(--primary-start);
    border: none;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-spring);
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(255, 255, 255, 0.3);
    color: var(--primary-end);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-spring);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
    transform: translateY(-3px);
    color: #fff;
}

/* ============================================
   SECTION STYLES
   ============================================ */

.section {
    padding: var(--space-3xl) var(--space-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.section.surface-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    margin-bottom: var(--space-md);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   APP SHOWCASE
   ============================================ */

.apps-showcase {
    padding: var(--space-3xl) 0;
}

.apps-grid {
    display: grid !important;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-lg);
    padding: var(--space-lg);
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    align-items: stretch;
}

.app-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-spring);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    box-shadow: var(--shadow-md);
}

.app-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.app-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-glow);
}

.app-card:hover::before {
    opacity: 0.05;
}

.app-icon {
    width: 88px;
    height: 88px;
    border-radius: 22%;
    margin: 0 auto var(--space-md);
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 1;
    transition: transform var(--transition-spring);
}

.app-card:hover .app-icon {
    transform: scale(1.1);
}

.app-name {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
    position: relative;
    z-index: 1;
}

.app-category {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--space-md);
    position: relative;
    z-index: 1;
}

.app-rating {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    color: #fbbf24;
    position: relative;
    z-index: 1;
}

.app-rating-count {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-left: var(--space-sm);
}

/* Projects Page - Taller App Cards with Description */
.apps-grid.projects-grid {
    display: grid !important;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 28px;
    width: 100%;
}

.apps-grid.projects-grid .app-card {
    min-height: 420px;
    display: flex;
    flex-direction: column;
    text-align: left;
    padding: var(--space-xl) var(--space-xl) var(--space-lg);
}

.apps-grid.projects-grid .app-card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
    margin-bottom: var(--space-md);
}

.apps-grid.projects-grid .app-icon {
    width: 80px;
    height: 80px;
    margin: 0;
    flex-shrink: 0;
}

.apps-grid.projects-grid .app-card-info {
    flex: 1;
    min-width: 0;
}

.apps-grid.projects-grid .app-name {
    text-align: left;
    margin-bottom: var(--space-xs);
}

.apps-grid.projects-grid .app-category {
    text-align: left;
    margin-bottom: var(--space-sm);
}

.apps-grid.projects-grid .app-rating {
    justify-content: flex-start;
}

.apps-grid.projects-grid .app-description {
    flex: 1;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    position: relative;
    z-index: 1;
    display: -webkit-box;
    -webkit-line-clamp: 6;
    line-clamp: 6;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-top: var(--space-sm);
}

/* ============================================
   SKILLS SECTION
   ============================================ */

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-lg);
    align-items: stretch;
}

.skill-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
    text-align: center;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.skill-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-start);
}

.skill-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-md);
    color: #fff;
    box-shadow: var(--shadow-md);
}

.skill-card-icon svg {
    width: 24px;
    height: 24px;
}

.skill-card-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.skill-card-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    justify-content: center;
    margin-top: var(--space-md);
}

.skill-tag {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
}

/* ============================================
   EXPERIENCE / TIMELINE
   ============================================ */

.experience-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border-left: 4px solid var(--primary-start);
    margin-bottom: var(--space-xl);
    transition: all var(--transition-base);
}

.experience-card:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-lg);
}

.experience-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.experience-company {
    color: var(--primary-start);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.experience-description {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   APP DETAIL MODAL
   ============================================ */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    max-width: 700px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-spring);
    position: relative;
}

.modal-overlay.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--bg-tertiary);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    z-index: 10;
}

.modal-close:hover {
    background: var(--primary-start);
    color: #fff;
}

.modal-header {
    padding: var(--space-2xl);
    text-align: center;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.modal-app-icon {
    width: 120px;
    height: 120px;
    border-radius: 22%;
    margin: 0 auto var(--space-lg);
    box-shadow: var(--shadow-xl), 0 0 40px rgba(102, 126, 234, 0.3);
}

.modal-app-name {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.modal-app-developer {
    color: var(--text-muted);
    margin-bottom: var(--space-md);
}

.modal-app-meta {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
    margin-bottom: var(--space-lg);
}

.modal-meta-item {
    text-align: center;
}

.modal-meta-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-meta-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.modal-body {
    padding: var(--space-xl) var(--space-2xl) var(--space-2xl);
}

.modal-section-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.modal-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
}

.modal-screenshots {
    display: flex;
    gap: var(--space-md);
    overflow-x: auto;
    padding: var(--space-md) 0;
    margin-bottom: var(--space-xl);
    scroll-snap-type: x mandatory;
}

.modal-screenshot {
    flex-shrink: 0;
    width: 150px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    scroll-snap-align: start;
}

.modal-appstore-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    width: 100%;
    padding: var(--space-lg);
    background: #000;
    color: #fff;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-base);
}

.modal-appstore-btn:hover {
    background: #333;
    transform: scale(1.02);
    color: #fff;
}

.modal-appstore-btn svg {
    width: 24px;
    height: 24px;
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */

.fade-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

.fade-in {
    opacity: 0;
    transition: opacity 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
}

.slide-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

.slide-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

.scale-in {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

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

/* Stagger children */
.stagger-children>* {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease-out, transform 0.4s ease-out;
}

.stagger-children.visible>*:nth-child(1) {
    transition-delay: 0ms;
}

.stagger-children.visible>*:nth-child(2) {
    transition-delay: 100ms;
}

.stagger-children.visible>*:nth-child(3) {
    transition-delay: 200ms;
}

.stagger-children.visible>*:nth-child(4) {
    transition-delay: 300ms;
}

.stagger-children.visible>*:nth-child(5) {
    transition-delay: 400ms;
}

.stagger-children.visible>*:nth-child(6) {
    transition-delay: 500ms;
}

.stagger-children.visible>* {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   FOOTER
   ============================================ */

.modern-footer {
    background: var(--bg-secondary);
    padding: var(--space-3xl) var(--space-xl);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-xl);
}

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-links {
    display: flex;
    gap: var(--space-xl);
    list-style: none;
    margin: 0;
    padding: 0;
}

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

.footer-link:hover {
    color: var(--primary-start);
}

.social-links {
    display: flex;
    gap: var(--space-md);
}

.social-link {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--primary-gradient);
    color: #fff;
    transform: translateY(-3px);
}

/* ============================================
   THEME TOGGLE
   ============================================ */

/* ============================================
   THEME TOGGLE
   ============================================ */

.theme-toggle {
    display: inline-flex;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    padding: 4px;
    gap: 6px;
    align-items: center;
    box-shadow: var(--shadow-sm);
}

.theme-toggle button {
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: grid;
    place-items: center;
    margin: 0;
}

.theme-toggle button svg {
    width: 18px;
    height: 18px;
    stroke-width: 2px;
}

.theme-toggle button.active {
    background: var(--primary-gradient);
    color: #fff;
    box-shadow: var(--shadow-md);
}

[data-bs-theme="dark"] .theme-toggle {
    background: var(--dark-bg-tertiary);
}

[data-bs-theme="dark"] .theme-toggle button.active {
    background: var(--bg-primary);
    color: var(--primary-start);
    box-shadow: var(--shadow-sm);
}

.theme-toggle button:hover:not(.active) {
    color: var(--text-primary);
    transform: translateY(-1px);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .hero-section {
        padding: var(--space-2xl) var(--space-md);
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

    .section {
        padding: var(--space-2xl) var(--space-md);
    }

    .section.surface-card {
        border-radius: var(--radius-lg);
    }

    .apps-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)) !important;
        gap: var(--space-md);
        padding: var(--space-md);
    }

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

    .apps-grid.projects-grid .app-card {
        min-height: auto;
    }

    .modal-content {
        margin: var(--space-md);
        max-height: calc(100vh - 2rem);
    }

    .modal-header {
        padding: var(--space-xl);
    }

    .modal-body {
        padding: var(--space-lg);
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* ============================================
   SCROLL INDICATOR
   ============================================ */

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    animation: bounce 2s ease-in-out infinite;
}

.scroll-indicator-icon {
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 25px;
    position: relative;
}

.scroll-indicator-icon::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    width: 6px;
    height: 6px;
    background: #fff;
    border-radius: 50%;
    transform: translateX(-50%);
    animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {

    0%,
    100% {
        top: 8px;
        opacity: 1;
    }

    50% {
        top: 30px;
        opacity: 0.3;
    }
}

@keyframes bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

/* ============================================
   CONTACT FORM STYLES
   ============================================ */

.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-start);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-gradient {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mb-0 {
    margin-bottom: 0;
}

.mb-1 {
    margin-bottom: var(--space-xs);
}

.mb-2 {
    margin-bottom: var(--space-sm);
}

.mb-3 {
    margin-bottom: var(--space-md);
}

.mb-4 {
    margin-bottom: var(--space-lg);
}

.mb-5 {
    margin-bottom: var(--space-xl);
}

.mt-0 {
    margin-top: 0;
}

.mt-1 {
    margin-top: var(--space-xs);
}

.mt-2 {
    margin-top: var(--space-sm);
}

.mt-3 {
    margin-top: var(--space-md);
}

.mt-4 {
    margin-top: var(--space-lg);
}

.mt-5 {
    margin-top: var(--space-xl);
}

.hidden {
    display: none !important;
}

/* Fix for animation visibility without overriding display type */
.visible {
    opacity: 1 !important;
    transform: none !important;
    visibility: visible !important;
}

/* Ensure grids always display as grid with HIGH specificity */
div.apps-grid.visible,
div.apps-grid,
.apps-grid {
    display: grid !important;
}