/* Dark Theme CSS for Single Page Portfolio */

/* Global Styles */
:root {
    --dark-bg: #0a0a0a;
    --darker-bg: #050505;
    --card-bg: #1a1a1a;
    --border-color: #333;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #888;
    --accent-primary: #00d4ff;
    --accent-secondary: #0099cc;
    --accent-success: #00ff88;
    --accent-warning: #ffaa00;
    --accent-danger: #ff4757;
    --accent-info: #3742fa;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.7);
    --transition: all 0.3s ease;
    --transition-fast: all 0.15s ease;
    --border-radius: 12px;
    --border-radius-lg: 16px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--dark-bg);
    overflow-x: hidden;
}

/* Improved Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.display-3, .display-4, .display-5, .display-6 {
    font-weight: 700;
    letter-spacing: -0.04em;
}

.lead {
    font-size: 1.15rem;
    font-weight: 400;
    line-height: 1.7;
}

/* Navigation */
.navbar {
    background: rgba(10, 10, 10, 0.95) !important;
    backdrop-filter: blur(20px);
    transition: var(--transition);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.navbar.scrolled {
    background: rgba(5, 5, 5, 0.98) !important;
    backdrop-filter: blur(30px);
    border-bottom-color: var(--accent-primary);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary) !important;
    transition: var(--transition);
}

.navbar-brand:hover {
    transform: scale(1.05);
    color: var(--accent-secondary) !important;
}

.navbar-nav .nav-link {
    font-weight: 500;
    margin: 0 0.5rem;
    transition: var(--transition);
    position: relative;
    color: var(--text-secondary) !important;
    padding: 0.5rem 1rem !important;
    border-radius: var(--border-radius);
}

.navbar-nav .nav-link:hover {
    color: var(--accent-primary) !important;
    background: rgba(0, 212, 255, 0.1);
}

.navbar-nav .nav-link.active {
    color: var(--accent-primary) !important;
    background: rgba(0, 212, 255, 0.15);
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: var(--transition);
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    width: 70%;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 100%);
    position: relative;
    overflow: hidden;
    min-height: 100vh;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 255, 136, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(55, 66, 250, 0.06) 0%, transparent 50%);
    animation: float 8s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(2deg); }
}

.hero-section .container {
    position: relative;
    z-index: 2;
}

/* Enhanced Hero Buttons */
.hero-buttons .btn {
    border-radius: var(--border-radius);
    font-weight: 600;
    padding: 1rem 2rem;
    transition: var(--transition);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.hero-buttons .btn-primary {
    background: linear-gradient(135deg, #1976d2, #1565c0);
    border: none;
    color: #fff;
}

.hero-buttons .btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: var(--transition);
}

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

.hero-buttons .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(25, 118, 210, 0.3);
}

.hero-buttons .btn-outline-light {
    border: 2px solid var(--accent-primary);
    color: var(--accent-primary);
    background: transparent;
}

.hero-buttons .btn-outline-light:hover {
    background: var(--accent-primary);
    color: var(--dark-bg);
    box-shadow: 0 15px 35px rgba(0, 212, 255, 0.4);
}

/* Cards */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
    overflow: hidden;
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    opacity: 0;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-primary);
}

.card:hover::before {
    opacity: 1;
}

/* Enhanced Skill Cards */
.skill-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
    overflow: hidden;
    position: relative;
    backdrop-filter: blur(10px);
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-success));
    transform: scaleX(0);
    transition: var(--transition);
    transform-origin: left;
}

.skill-card:hover::before {
    transform: scaleX(1);
}

.skill-card:hover {
    transform: translateY(-4px) scale(1.02);
    border-color: var(--accent-primary);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.15);
}

.skill-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.6);
    border-color: var(--accent-primary);
}

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-success));
    z-index: 9999;
    transition: width 0.1s ease;
    box-shadow: 0 0 10px var(--accent-primary);
}

/* Custom 5-column layout for skills */
.col-skill-5 {
    flex: 0 0 auto;
    width: 20%; /* 100% / 5 = 20% */
}

/* Center align skill cards when there are remaining cards */
.row.g-3 {
    justify-content: center;
}

/* Project and Achievement cards - 20% smaller with better spacing */
.project-card, .achievement-card {
    transform: scale(0.85);
    transform-origin: center;
    margin: -5% auto; /* Reduced negative margin for better spacing */
    transition: var(--transition);
}

.project-card:hover, .achievement-card:hover {
    transform: scale(0.88) translateY(-5px);
    box-shadow: 0 25px 50px rgba(0, 212, 255, 0.2);
}

/* Adjust card wrapper spacing */
.project-card-wrapper, .col-lg-4.col-md-6 {
    margin-bottom: 1rem; /* Add some bottom margin to prevent overlap */
}

/* Enhanced Section Spacing */
section {
    position: relative;
    overflow: hidden;
}

section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 10% 20%, rgba(0, 212, 255, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(0, 255, 136, 0.02) 0%, transparent 40%);
    pointer-events: none;
}

/* Modern Contact Section */
.contact-bar {
    background: linear-gradient(135deg, var(--card-bg), rgba(26, 26, 26, 0.8));
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}

.contact-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-success));
}

.contact-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    padding: 0.5rem;
    border-radius: var(--border-radius);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.contact-link:hover {
    color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.1);
    transform: translateY(-2px);
}

/* Responsive adjustments for skill cards */
@media (max-width: 1200px) {
    .col-skill-5 {
        width: 25%; /* 4 per row on medium-large screens */
    }
}

@media (max-width: 992px) {
    .col-skill-5 {
        width: 33.333333%; /* 3 per row on medium screens */
    }
}

@media (max-width: 768px) {
    .col-skill-5 {
        width: 50%; /* 2 per row on small screens */
    }
}

@media (max-width: 576px) {
    .col-skill-5 {
        width: 100%; /* 1 per row on extra small screens */
    }
}

/* Animation Classes */
@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    0% {
        opacity: 0;
        transform: translateX(-30px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    0% {
        opacity: 0;
        transform: translateX(30px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

.slide-in-left {
    animation: slideInLeft 0.6s ease-out forwards;
}

.slide-in-right {
    animation: slideInRight 0.6s ease-out forwards;
}

.animate-in {
    animation: fadeInUp 0.8s ease-out forwards;
}

/* Enhanced Button Styles */
.btn {
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border: none;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.4);
    background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
}

.btn-outline-primary {
    border: 2px solid var(--accent-primary);
    color: var(--accent-primary);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--accent-primary);
    color: var(--dark-bg);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.3);
}

/* Loading Animation */
.loading {
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition);
}

.loading.loaded {
    opacity: 1;
    transform: translateY(0);
}

/* Utility Classes */
.glass-effect {
    background: rgba(26, 26, 26, 0.7);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.glow {
    box-shadow: 0 0 20px var(--accent-primary);
}

.text-gradient {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-success));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Project Cards */
.project-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: var(--transition);
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    border-color: var(--accent-primary);
}

.project-placeholder {
    height: 200px;
    background: linear-gradient(135deg, var(--card-bg) 0%, var(--border-color) 100%);
}

/* Achievement Cards */
.achievement-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: var(--transition);
}

.achievement-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.6);
    border-color: var(--accent-primary);
}

/* Timeline */
.timeline {
    position: relative;
    padding: 2rem 0;
}

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

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

.timeline-marker {
    position: absolute;
    left: 50%;
    top: 1rem;
    width: 20px;
    height: 20px;
    background: var(--accent-primary);
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.timeline-content {
    width: 45%;
    margin-left: 55%;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 0;
    margin-right: 55%;
}

/* Buttons */
.btn {
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--dark-bg);
}

.btn-primary:hover {
    background: var(--accent-secondary);
    border-color: var(--accent-secondary);
    transform: translateY(-2px);
}

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

.btn-outline-primary:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--dark-bg);
    transform: translateY(-2px);
}

.btn-outline-light {
    border-color: var(--text-secondary);
    color: var(--text-secondary);
}

.btn-outline-light:hover {
    background: var(--text-secondary);
    border-color: var(--text-secondary);
    color: var(--dark-bg);
    transform: translateY(-2px);
}

/* Form Elements */
.form-control {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 8px;
}

.form-control:focus {
    background: var(--card-bg);
    border-color: var(--accent-primary);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.2rem rgba(0, 212, 255, 0.25);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-label {
    color: var(--text-primary);
}

/* Badges */
.badge {
    border-radius: 20px;
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

.bg-primary {
    background: var(--accent-primary) !important;
    color: var(--dark-bg) !important;
}

.bg-secondary {
    background: var(--border-color) !important;
    color: var(--text-primary) !important;
}

.bg-success {
    background: var(--accent-success) !important;
    color: var(--dark-bg) !important;
}

.bg-warning {
    background: var(--accent-warning) !important;
    color: var(--dark-bg) !important;
}

.bg-danger {
    background: var(--accent-danger) !important;
    color: var(--text-primary) !important;
}

.bg-info {
    background: var(--accent-info) !important;
    color: var(--text-primary) !important;
}

/* Progress Bars */
.progress {
    background: var(--border-color);
    border-radius: 4px;
}

.progress-bar {
    border-radius: 4px;
}

/* Filter Buttons */
.filter-buttons .btn {
    border-radius: 25px;
    padding: 0.5rem 1.5rem;
}

.filter-buttons .btn.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--dark-bg);
}

/* Sections */
section {
    padding: 3rem 0;
}

.bg-dark {
    background-color: var(--darker-bg) !important;
}

/* Contact Section - Super Compact Styling */
.contact-super-compact {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
}

.contact-super-compact:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    border-color: rgba(0, 212, 255, 0.2);
}

/* Contact Info Compact - Single Line */
.contact-info-compact {
    display: flex;
    align-items: center;
    font-size: 0.9rem;
    flex-wrap: wrap;
}

.contact-info-compact span:first-child {
    white-space: nowrap;
}

/* Social Links Compact */
.social-links-compact {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.social-links-compact a {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid transparent;
    transition: all 0.2s ease;
    text-decoration: none;
}

.social-links-compact a:hover {
    color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.08);
    border-color: rgba(0, 212, 255, 0.2);
    transform: translateY(-1px) scale(1.05);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .contact-super-compact {
        padding: 0.75rem 1rem;
    }
    
    .contact-super-compact .d-flex {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    
    .contact-info-compact {
        flex-direction: column;
        gap: 0.25rem;
        font-size: 0.85rem;
    }
    
    .social-links-compact {
        justify-content: center;
        gap: 0.75rem;
    }
    
    .social-links-compact a {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }
}

@media (max-width: 576px) {
    .contact-info-compact .ms-3 {
        margin-left: 0 !important;
    }
}

/* Social Links */
.social-links a {
    transition: var(--transition);
    display: inline-block;
}

.social-links a:hover {
    transform: translateY(-3px);
    color: var(--accent-primary) !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        text-align: center;
        padding: 2rem 0;
    }
    
    .hero-section h1 {
        font-size: 2.5rem;
    }
    
    .hero-buttons .btn {
        display: block;
        margin: 0.5rem auto;
        width: 80%;
    }
    
    section {
        padding: 3rem 0;
    }
    
    .timeline::before {
        left: 2rem;
    }
    
    .timeline-marker {
        left: 2rem;
    }
    
    .timeline-content {
        width: 100%;
        margin-left: 4rem;
        margin-right: 0;
    }
    
    .timeline-item:nth-child(even) .timeline-content {
        margin-left: 4rem;
        margin-right: 0;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--darker-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-secondary);
}

/* Focus states for accessibility */
.btn:focus,
.form-control:focus {
    box-shadow: 0 0 0 0.2rem rgba(0, 212, 255, 0.25);
    border-color: var(--accent-primary);
}

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Print styles */
@media print {
    .navbar,
    .footer,
    .btn {
        display: none !important;
    }
}