/* =====================================================
   Daily Dose Portfolio - CSS Styles
   Author: May Thingyan
   ===================================================== */

/* CSS Variables */
:root {
    /* Colors - Green Theme */
    --primary: #2E7D32;
    --primary-dark: #1B5E20;
    --primary-light: #4CAF50;
    --primary-lighter: #A5D6A7;
    --primary-bg: #E8F5E9;
    
    --secondary: #FF8F00;
    --secondary-light: #FFB74D;
    
    --background: #F8FBF8;
    --surface: #FFFFFF;
    --surface-elevated: #FFFFFF;
    
    --text-primary: #1A1C19;
    --text-secondary: #424940;
    --text-muted: #78887A;
    --text-on-primary: #FFFFFF;
    
    --border: #DEE5DB;
    --shadow: rgba(46, 125, 50, 0.1);
    --shadow-strong: rgba(46, 125, 50, 0.2);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Font */
    --font-primary: 'Poppins', sans-serif;
    --font-display: 'Space Grotesk', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    overflow-x: hidden;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--background);
    overflow-x: hidden;
    position: relative;
    max-width: 100vw;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    width: 100%;
    overflow-x: hidden;
}

/* =====================================================
   Navigation
   ===================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: 0 4px 20px var(--shadow);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    border-radius: var(--radius-md);
    font-size: 1.5rem;
    font-weight: 700;
    transition: var(--transition-normal);
}

.nav-logo:hover .logo-icon {
    animation: wiggle 0.5s ease-in-out;
    transform: rotate(360deg);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-link {
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: var(--spacing-sm) 0;
}

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

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

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

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
}

/* =====================================================
   Hero Section
   ===================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 100px var(--spacing-lg) var(--spacing-3xl);
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 25%, #A5D6A7 50%, #E8F5E9 75%, var(--background) 100%);
    background-size: 400% 400%;
    animation: freshGradient 15s ease infinite;
    overflow: hidden;
}

@keyframes freshGradient {
    0%, 100% { background-position: 0% 50%; }
    25% { background-position: 100% 25%; }
    50% { background-position: 100% 50%; }
    75% { background-position: 0% 75%; }
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.math-symbols {
    position: absolute;
    width: 100%;
    height: 100%;
}

.math-symbols .symbol {
    position: absolute;
    font-size: clamp(1.5rem, 3vw, 3rem);
    color: var(--primary-lighter);
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
    will-change: transform;
}

.symbol:nth-child(1) { top: 10%; left: 5%; animation-delay: 0s; }
.symbol:nth-child(2) { top: 20%; right: 10%; animation-delay: 2s; }
.symbol:nth-child(3) { top: 60%; left: 15%; animation-delay: 4s; }
.symbol:nth-child(4) { top: 80%; right: 20%; animation-delay: 6s; }
.symbol:nth-child(5) { top: 40%; left: 75%; animation-delay: 8s; }
.symbol:nth-child(6) { top: 70%; left: 50%; animation-delay: 10s; }
.symbol:nth-child(7) { top: 15%; left: 55%; animation-delay: 12s; }
.symbol:nth-child(8) { top: 85%; left: 30%; animation-delay: 14s; }
.symbol:nth-child(9) { top: 50%; right: 8%; animation-delay: 16s; }
.symbol:nth-child(10) { top: 30%; left: 40%; animation-delay: 18s; }

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(10deg); }
}

.hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-3xl);
    max-width: 1200px;
    width: 100%;
    position: relative;
    z-index: 1;
}

.hero-text {
    flex: 1;
    max-width: 600px;
}

.hero-greeting {
    font-size: 1.125rem;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s linear infinite;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.separator {
    color: var(--primary-lighter);
}

.typing-text {
    color: var(--primary);
    font-weight: 500;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.hero-image {
    flex-shrink: 0;
}

.hero-card {
    position: relative;
    width: clamp(200px, 40vw, 300px);
    height: clamp(200px, 40vw, 300px);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 20px 60px var(--shadow-strong), 0 0 40px rgba(76, 175, 80, 0.1);
    animation: heroFloat 6s infinite ease-in-out;
}

.card-glow {
    position: absolute;
    inset: -20px;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    border-radius: var(--radius-xl);
    opacity: 0.2;
    filter: blur(30px);
    z-index: -1;
}

.mascot-img {
    width: clamp(140px, 35vw, 220px);
    height: clamp(140px, 35vw, 220px);
    object-fit: contain;
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
    filter: drop-shadow(0 10px 20px rgba(46, 125, 50, 0.2));
}

.hero-card:hover .mascot-img {
    transform: scale(1.05);
}

.hero-card:hover {
    animation: wiggle 0.5s ease-in-out;
}

/* Sparkle decorations */
.sparkles {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.sparkle {
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--secondary);
    border-radius: 50%;
    animation: sparkle 2s infinite;
}

.sparkle::before {
    content: '✨';
    font-size: 20px;
    position: absolute;
    top: -5px;
    left: -5px;
}

.sparkle:nth-child(1) { top: 10%; left: 10%; animation-delay: 0s; }
.sparkle:nth-child(2) { top: 20%; right: 15%; animation-delay: 0.5s; }
.sparkle:nth-child(3) { bottom: 30%; left: 20%; animation-delay: 1s; }
.sparkle:nth-child(4) { bottom: 15%; right: 10%; animation-delay: 1.5s; }

@keyframes heroFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--primary);
    font-size: 1.5rem;
    animation: bounce 2s infinite;
}

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

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

@keyframes wiggle {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-5deg); }
    75% { transform: rotate(5deg); }
}

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

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-50px); }
    to { opacity: 1; transform: translateX(0); }
}

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

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

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

@keyframes twinkle {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

@keyframes pop {
    0% { transform: scale(0.8); opacity: 0; }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes shimmer {
    0% { background-position: 200% center; }
    100% { background-position: -200% center; }
}

@keyframes float-soft {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* =====================================================
   Buttons
   ===================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition-normal);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light), var(--primary));
    background-size: 200% 200%;
    color: var(--text-on-primary);
    box-shadow: 0 4px 15px var(--shadow);
    animation: gradient 3s ease infinite;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 30px var(--shadow-strong);
}

.btn-secondary {
    background: var(--surface);
    color: var(--primary);
    border-color: var(--border);
}

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

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--text-on-primary);
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.125rem;
}

/* =====================================================
   Section Styles
   ===================================================== */
section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.title-icon {
    font-size: 1.5em;
}

/* =====================================================
   About Section
   ===================================================== */
.about {
    background: var(--surface);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.about-intro {
    font-size: 1.25rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.about-text p {
    margin-bottom: var(--spacing-lg);
    color: var(--text-secondary);
    line-height: 1.8;
}

.skills h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.skill-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, rgba(232, 245, 233, 0.9), rgba(200, 230, 201, 0.9));
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition-normal);
    cursor: default;
    border: 1px solid rgba(76, 175, 80, 0.2);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.skill-tag:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px) scale(1.1);
    box-shadow: 0 5px 15px var(--shadow);
}

.skill-tag:hover i {
    animation: wiggle 0.3s ease-in-out;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.stat-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.5);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(76, 175, 80, 0.1), transparent);
    transition: 0.5s;
}

.stat-card:hover::before {
    left: 100%;
}

.stat-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 15px 40px var(--shadow-strong);
}

.stat-card:hover .stat-icon {
    animation: wiggle 0.5s ease-in-out;
}

.stat-card:hover .stat-number {
    animation: pulse 0.5s ease-in-out;
}

.stat-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    border-radius: var(--radius-md);
    font-size: 1.5rem;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* =====================================================
   Apps Section
   ===================================================== */
.apps {
    background: linear-gradient(135deg, var(--primary-bg) 0%, var(--background) 100%);
}

.app-showcase {
    display: flex;
    justify-content: center;
}

.app-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    max-width: 800px;
    width: 100%;
    box-shadow: 0 10px 40px var(--shadow), 0 0 80px rgba(76, 175, 80, 0.08);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.5);
    transition: var(--transition-normal);
}

.app-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 60px var(--shadow-strong), 0 0 100px rgba(76, 175, 80, 0.12);
}

.app-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.app-badge {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.app-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.app-icon {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 20px var(--shadow);
}

.app-name {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.app-tagline {
    color: var(--primary);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.app-rating {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--secondary);
    font-size: 0.875rem;
}

.app-rating span {
    color: var(--text-muted);
    margin-left: var(--spacing-sm);
}

.app-description {
    margin-bottom: var(--spacing-xl);
    color: var(--text-secondary);
    line-height: 1.8;
}

.app-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--primary-bg);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-dark);
    transition: var(--transition-normal);
    cursor: default;
}

.feature:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 20px var(--shadow);
}

.feature:hover i {
    color: white;
    animation: wiggle 0.3s ease-in-out;
}

.feature i {
    color: var(--primary);
    transition: var(--transition-fast);
}

.app-screenshots {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.app-screenshots::-webkit-scrollbar {
    display: none;
    padding: var(--spacing-sm) 0;
}

.screenshot {
    width: 150px;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 15px var(--shadow);
    flex-shrink: 0;
}

.app-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* =====================================================
   Contact Section
   ===================================================== */
.contact {
    background: var(--surface);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-intro {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.contact-cards {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--background);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
}

.contact-card:hover {
    transform: translateX(10px) scale(1.02);
    box-shadow: 0 8px 25px var(--shadow);
    background: var(--primary-bg);
}

.contact-card:hover .contact-icon {
    animation: pulse 0.5s ease-in-out infinite;
    background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
}

.contact-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    border-radius: var(--radius-md);
    font-size: 1.25rem;
}

.contact-details h4 {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.contact-details p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.contact-form-wrapper {
    background: var(--background);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group label {
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    padding: var(--spacing-md);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition-fast);
    background: var(--surface);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-bg);
}

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

/* =====================================================
   Footer
   ===================================================== */
.footer {
    background: var(--text-primary);
    color: var(--text-on-primary);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: var(--spacing-lg);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.25rem;
}

.footer-brand .logo-icon {
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
}

.footer-links {
    display: flex;
    gap: var(--spacing-xl);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links a:hover {
    color: white;
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: white;
    transition: var(--transition-normal);
}

.footer-social a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

.footer-bottom i {
    color: #e74c3c;
}

/* =====================================================
   Responsive Design
   ===================================================== */
@media (max-width: 992px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-text {
        max-width: 100%;
    }
    
    .hero-subtitle {
        justify-content: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .app-features {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        box-shadow: 0 10px 30px var(--shadow);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-normal);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .hero-card {
        width: clamp(180px, 60vw, 250px);
        height: clamp(180px, 60vw, 250px);
    }
    
    .mascot-img {
        width: clamp(120px, 50vw, 180px);
        height: clamp(120px, 50vw, 180px);
    }
    
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .stat-card {
        padding: var(--spacing-md);
    }
    
    .stat-number {
        font-size: 1.75rem;
    }
    
    .app-features {
        grid-template-columns: 1fr;
    }
    
    .app-header {
        flex-direction: column;
        text-align: center;
    }
    
    .app-actions {
        justify-content: center;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero-subtitle {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .separator {
        display: none;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        width: 100%;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .skill-tags {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 1rem;
        --spacing-xl: 1.5rem;
    }
    
    .hero {
        padding: 90px var(--spacing-md) var(--spacing-xl);
    }
    
    .hero-greeting {
        font-size: 1rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: 0.875rem;
    }
    
    .btn-large {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: 1rem;
    }
    
    .app-card {
        padding: var(--spacing-md);
    }
    
    .app-icon {
        width: 70px;
        height: 70px;
    }
    
    .app-name {
        font-size: 1.25rem;
    }
    
    .screenshot {
        width: 100px;
    }
    
    .section-title {
        font-size: 1.5rem;
        margin-bottom: var(--spacing-xl);
    }
    
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stat-icon {
        width: 45px;
        height: 45px;
        font-size: 1.2rem;
    }
    
    .contact-card {
        padding: var(--spacing-md);
        gap: var(--spacing-md);
    }
    
    .contact-form-wrapper {
        padding: var(--spacing-lg);
    }
    
    .math-symbols .symbol {
        font-size: 1.2rem;
    }
    
    .nav-container {
        padding: 0 var(--spacing-md);
    }
}