/* Common Styles for All Pages - Laura Chou Portfolio */

/* CSS Variables */
:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --dark-gradient: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    --neon-blue: #00f3ff;
    --neon-purple: #bf00ff;
    --neon-pink: #ff0080;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --dark-bg: rgba(0, 0, 0, 0.8);
    --tech-blue: #00ffff;
    --tech-purple: #8a2be2;
}

/* Universal Background Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background: radial-gradient(ellipse at center, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    min-height: 100vh;
    overflow-x: hidden;
    color: #ffffff;
    position: relative;
    margin: 0;
    padding: 0;
}

/* Animated Tech Background */
.tech-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    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%);
    animation: techBgMove 20s ease-in-out infinite;
}

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

/* Grid Pattern Overlay */
.tech-grid {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background-image: 
        linear-gradient(rgba(0, 255, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 30s linear infinite;
}

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

/* Desktop Navigation */
.desktop-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(135deg, rgba(26, 26, 46, 0.95) 0%, rgba(22, 33, 62, 0.95) 100%);
    backdrop-filter: blur(30px);
    border-bottom: 2px solid;
    border-image: linear-gradient(90deg, transparent 0%, rgba(0, 255, 255, 0.8) 50%, transparent 100%) 1;
    transition: all 0.3s ease;
    box-shadow: 0 5px 30px rgba(0, 255, 255, 0.1);
}

.desktop-nav::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(0, 255, 255, 0.05) 25%, 
        rgba(138, 43, 226, 0.05) 75%, 
        transparent 100%);
    animation: navGlow 6s ease-in-out infinite;
}

@keyframes navGlow {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.7; }
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.2rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 2;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, #00f2fe 0%, #4facfe 50%, #bf00ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    text-decoration: none;
    transition: all 0.3s ease;
    letter-spacing: -0.5px;
}

.logo::before {
    content: '< ';
    color: rgba(0, 255, 255, 0.8);
}

.logo::after {
    content: ' />';
    color: rgba(138, 43, 226, 0.8);
}

.logo:hover {
    filter: drop-shadow(0 0 10px rgba(0, 255, 255, 0.6));
    transform: scale(1.02);
}

.nav-links {
    display: flex;
    gap: 0.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
    position: relative;
}

.nav-link {
    color: #ffffff;
    text-decoration: none;
    padding: 0.8rem 1.5rem;
    border-radius: 30px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    font-weight: 500;
    border: 1px solid transparent;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 255, 255, 0.2) 0%, rgba(138, 43, 226, 0.2) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 30px;
}

.nav-link:hover::before,
.nav-link.active::before {
    opacity: 1;
}

.nav-link:hover,
.nav-link.active {
    color: #ffffff;
    text-decoration: none;
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 255, 255, 0.3);
    border-color: rgba(0, 255, 255, 0.5);
    background: rgba(255, 255, 255, 0.1);
}

.nav-link.active {
    background: linear-gradient(135deg, rgba(0, 255, 255, 0.15) 0%, rgba(138, 43, 226, 0.15) 100%);
    border-color: rgba(0, 255, 255, 0.6);
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.4);
}

/* Navigation Hover Effects - Removed to fix alignment issues */

/* Mobile Navigation */
.mobile-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(135deg, rgba(26, 26, 46, 0.98) 0%, rgba(22, 33, 62, 0.98) 100%);
    backdrop-filter: blur(30px);
    border-top: 2px solid;
    border-image: linear-gradient(90deg, transparent 0%, rgba(0, 255, 255, 0.8) 50%, transparent 100%) 1;
    display: none;
    padding: 1rem 0 2rem 0;
    box-shadow: 0 -5px 30px rgba(0, 255, 255, 0.1);
}

.mobile-nav::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(0, 255, 255, 0.05) 25%, 
        rgba(138, 43, 226, 0.05) 75%, 
        transparent 100%);
    animation: mobileNavGlow 8s ease-in-out infinite;
}

@keyframes mobileNavGlow {
    0%, 100% { opacity: 0.2; }
    50% { opacity: 0.6; }
}

.mobile-nav-container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    max-width: 100%;
    position: relative;
    z-index: 2;
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #ffffff;
    text-decoration: none;
    padding: 0.8rem 0.5rem;
    border-radius: 20px;
    transition: all 0.3s ease;
    min-width: 70px;
    position: relative;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

.mobile-nav-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 255, 255, 0.2) 0%, rgba(138, 43, 226, 0.2) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 20px;
}

.mobile-nav-item:hover::before,
.mobile-nav-item.active::before {
    opacity: 1;
}

.mobile-nav-item i {
    font-size: 1.6rem;
    margin-bottom: 0.3rem;
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.mobile-nav-item span {
    font-size: 0.75rem;
    font-weight: 500;
    position: relative;
    z-index: 2;
    transition: all 0.3s ease;
}

.mobile-nav-item:hover,
.mobile-nav-item.active {
    background: linear-gradient(135deg, rgba(0, 255, 255, 0.15) 0%, rgba(138, 43, 226, 0.15) 100%);
    transform: translateY(-5px);
    color: var(--tech-blue);
    text-decoration: none;
    box-shadow: 0 5px 20px rgba(0, 255, 255, 0.3);
    border: 1px solid rgba(0, 255, 255, 0.4);
}

.mobile-nav-item.active {
    background: linear-gradient(135deg, rgba(0, 255, 255, 0.2) 0%, rgba(138, 43, 226, 0.2) 100%);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.5);
}

.mobile-nav-item:hover i,
.mobile-nav-item.active i {
    transform: scale(1.1);
    filter: drop-shadow(0 0 8px rgba(0, 255, 255, 0.8));
}

.mobile-nav-item:hover span,
.mobile-nav-item.active span {
    transform: translateY(-1px);
}

/* Page Container */
.page-container {
    min-height: 100vh;
    padding-top: 90px;
    padding-bottom: 100px;
}

/* Page Loader */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #1a1a2e;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.loader {
    width: 40px;
    height: 40px;
    border: 2px solid rgba(0, 255, 255, 0.3);
    border-top: 2px solid var(--tech-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* Common Hero Section Styles */
.hero-section {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 30vh;
    padding: 2rem;
    position: relative;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    z-index: 2;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: titleGlow 2s ease-in-out infinite alternate;
}

@keyframes titleGlow {
    from { filter: drop-shadow(0 0 20px rgba(79, 172, 254, 0.5)); }
    to { filter: drop-shadow(0 0 30px rgba(79, 172, 254, 0.8)); }
}

.hero-subtitle {
    font-size: 1.2rem;
    color: #b8c6db;
    margin-bottom: 2rem;
    line-height: 1.6;
}

/* Common Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 255, 255, 0.3);
    margin: 15% auto;
    padding: 3rem;
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    text-align: center;
    color: white;
    animation: modalSlideIn 0.5s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.8);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Notification System */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 3000;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 255, 255, 0.3);
    border-radius: 10px;
    padding: 1rem 1.5rem;
    color: white;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 300px;
    transform: translateX(400px);
    transition: transform 0.3s ease;
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    border-color: rgba(76, 175, 80, 0.5);
}

.notification.error {
    border-color: rgba(244, 67, 54, 0.5);
}

.notification i {
    font-size: 1.2rem;
}

.notification.success i {
    color: #4CAF50;
}

.notification.error i {
    color: #f44336;
}

.close-notification {
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    margin-left: auto;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .nav-container {
        padding: 1rem 1.5rem;
    }

    .nav-links {
        gap: 0.3rem;
    }

    .nav-link {
        padding: 0.7rem 1.2rem;
        font-size: 0.9rem;
    }

    .logo {
        font-size: 1.6rem;
    }

    .tech-cards {
        margin: 1rem;
        padding: 3rem 1.5rem;
    }
}

@media (max-width: 768px) {
    .desktop-nav {
        display: none;
    }

    .mobile-nav {
        display: block;
    }

    .page-container {
        padding-top: 0;
        padding-bottom: 120px;
    }

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

    .hero-subtitle {
        font-size: 1rem;
        padding: 0 1rem;
    }

    .nav-container {
        padding: 1rem;
    }

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

    .tech-cards {
        margin: 0.5rem;
        padding: 2rem 1rem;
    }

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 0.9rem;
    }

    .modal-content {
        padding: 1.5rem;
        margin: 20% auto;
        width: 95%;
    }

    .notification {
        min-width: 250px;
        right: 10px;
        top: 10px;
    }

    .cta-buttons {
        flex-direction: column;
        gap: 1rem;
        padding: 0 1rem;
    }

    .cta-btn {
        width: 100%;
        justify-content: center;
    }

    .tech-card {
        padding: 1.5rem;
    }

    .tech-card h3 {
        font-size: 1.3rem;
    }

    .tech-card p {
        font-size: 0.9rem;
    }
}