/* ========================================
   MODERN PORTFOLIO UI/UX - 2026 DESIGN
   ======================================== */

/* ========================================
   1. CSS VARIABLES
   ======================================== */
:root {
    /* Colors */
    --primary-color: #905efb;
    --primary-light: #b794fc;
    --primary-dark: #6b46c1;
    --secondary-color: #cdfe7d;
    --accent-cyan: #00d4ff;
    --accent-pink: #ff006e;
    
    /* Dark Theme */
    --bg-dark: #0a0a0a;
    --bg-dark-secondary: #141414;
    --bg-dark-tertiary: #1a1a1a;
    --text-dark: #ffffff;
    --text-dark-secondary: rgba(255, 255, 255, 0.8);
    --text-dark-muted: rgba(255, 255, 255, 0.6);
    
    /* Light Theme */
    --bg-light: #ffffff;
    --bg-light-secondary: #f8f9fa;
    --bg-light-tertiary: #f1f3f5;
    --text-light: #1a1a2e;
    --text-light-secondary: #4a4a68;
    --text-light-muted: #6c757d;
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 10px;
    --spacing-md: 20px;
    --spacing-lg: 40px;
    --spacing-xl: 80px;
    --spacing-xxl: 120px;
    
    /* Typography */
    --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --line-height-tight: 1.3;
    --line-height-normal: 1.6;
    --line-height-relaxed: 1.8;
    
    /* Layout */
    --max-width: 1400px;
    --navbar-height: 70px;
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 30px rgba(144, 94, 251, 0.3);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ========================================
   2. GLOBAL RESET & BASE
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    line-height: var(--line-height-normal);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ========================================
   3. TYPOGRAPHY
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: var(--line-height-tight);
    letter-spacing: -0.5px;
}

h1 {
    font-size: clamp(36px, 5vw, 56px);
}

h2 {
    font-size: clamp(28px, 4vw, 40px);
}

h3 {
    font-size: clamp(20px, 3vw, 28px);
}

h4 {
    font-size: 20px;
}

p {
    font-size: 16px;
    line-height: var(--line-height-relaxed);
    color: var(--text-dark-secondary);
}

body:not(.dark-bg) p {
    color: var(--text-light-secondary);
}

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

/* ========================================
   4. LAYOUT
   ======================================== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
}

/* Section Spacing */
.section-padding {
    padding: var(--spacing-xxl) 0;
}

@media (max-width: 768px) {
    .section-padding {
        padding: var(--spacing-xl) 0;
    }
}

/* ========================================
   5. NAVBAR
   ======================================== */
.navbar {
    height: var(--navbar-height);
    padding: 10px var(--spacing-md);
    background: transparent;
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
}

body:not(.dark-bg) .navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
}

.navbar .nav-link {
    position: relative;
    padding: 8px 16px;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition-fast);
}

body:not(.dark-bg) .navbar .nav-link {
    color: var(--text-light);
}

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

.navbar .nav-link:hover::after,
.navbar .nav-link.active::after {
    width: 60%;
}

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

/* ========================================
   6. HERO SECTION
   ======================================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--navbar-height);
}

.hero-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

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

.hero-text h1 {
    margin-bottom: var(--spacing-md);
}

.hero-text p {
    margin-bottom: var(--spacing-lg);
    font-size: 18px;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.hero-image img {
    max-width: 450px;
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

@media (max-width: 991px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-text {
        max-width: 100%;
    }
    
    .hero-image {
        order: -1;
    }
    
    .hero-image img {
        max-width: 350px;
    }
}

/* ========================================
   7. CARDS
   ======================================== */
.card {
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    border: none;
    transition: var(--transition-normal);
    overflow: hidden;
}

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

.card-img-top {
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
    object-fit: cover;
}

/* Service Card */
.service-card {
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    background: var(--bg-dark-secondary);
    transition: var(--transition-normal);
}

body:not(.dark-bg) .service-card {
    background: var(--bg-light);
    box-shadow: var(--shadow-sm);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

/* Project Card */
.project-card {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    background: var(--bg-dark-tertiary);
}

body:not(.dark-bg) .project-card {
    background: var(--bg-light);
}

.project-card .card-img-top {
    height: 250px;
    object-fit: cover;
}

.project-card .card-body {
    padding: var(--spacing-md);
}

/* ========================================
   8. BUTTONS
   ======================================== */
.btn {
    padding: 12px 28px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition-normal);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.05);
}

/* ========================================
   9. FORMS
   ======================================== */
.form-control {
    padding: 14px 18px;
    border-radius: var(--border-radius-sm);
    border: 2px solid rgba(255, 255, 255, 0.1);
    background: var(--bg-dark-tertiary);
    color: var(--text-dark);
    font-size: 15px;
    transition: var(--transition-fast);
}

body:not(.dark-bg) .form-control {
    background: var(--bg-light-secondary);
    border-color: rgba(0, 0, 0, 0.1);
    color: var(--text-light);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(144, 94, 251, 0.2);
}

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

body:not(.dark-bg) .form-control::placeholder {
    color: var(--text-light-muted);
}

/* ========================================
   10. IMAGES
   ======================================== */
img {
    max-width: 100%;
    height: auto;
}

.img-fluid {
    max-width: 100%;
    height: auto;
}

.img-cover {
    object-fit: cover;
    width: 100%;
    height: 100%;
}

/* ========================================
   11. SECTIONS
   ======================================== */
.section-title {
    font-size: clamp(32px, 4vw, 44px);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-dark-muted);
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

body:not(.dark-bg) .section-subtitle {
    color: var(--text-light-muted);
}

/* ========================================
   12. GRID LAYOUTS
   ======================================== */
.row-custom {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
}

.col-custom {
    padding: 0 15px;
    margin-bottom: var(--spacing-md);
}

/* Grid System */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   13. FOOTER
   ======================================== */
.footer {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    background: var(--bg-dark-secondary);
}

body:not(.dark-bg) .footer {
    background: var(--bg-light-tertiary);
}

.footer-title {
    font-size: 20px;
    margin-bottom: var(--spacing-md);
}

.footer-link {
    color: var(--text-dark-muted);
    transition: var(--transition-fast);
}

body:not(.dark-bg) .footer-link {
    color: var(--text-light-muted);
}

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

/* ========================================
   14. RESPONSIVE UTILITIES
   ======================================== */
@media (max-width: 768px) {
    :root {
        --navbar-height: 60px;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    h1 {
        font-size: 32px;
    }
    
    h2 {
        font-size: 28px;
    }
    
    h3 {
        font-size: 22px;
    }
    
    p {
        font-size: 15px;
    }
    
    .btn {
        padding: 10px 22px;
        font-size: 14px;
    }
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 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);
    }
}

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

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

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

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

/* ========================================
   16. SPACING UTILITIES
   ======================================== */
.mb-10 { margin-bottom: 10px; }
.mb-20 { margin-bottom: 20px; }
.mb-30 { margin-bottom: 30px; }
.mb-40 { margin-bottom: 40px; }
.mb-50 { margin-bottom: 50px; }
.mb-60 { margin-bottom: 60px; }

.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }
.mt-30 { margin-top: 30px; }
.mt-40 { margin-top: 40px; }
.mt-50 { margin-top: 50px; }
.mt-60 { margin-top: 60px; }

.gap-10 { gap: 10px; }
.gap-20 { gap: 20px; }
.gap-30 { gap: 30px; }
.gap-40 { gap: 40px; }

/* ========================================
   17. TEXT UTILITIES
   ======================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--secondary-color); }
.text-muted { color: var(--text-dark-muted); }

body:not(.dark-bg) .text-muted {
    color: var(--text-light-muted);
}

.font-bold { font-weight: 700; }
.font-medium { font-weight: 500; }
.font-light { font-weight: 300; }

/* ========================================
   18. DISPLAY UTILITIES
   ======================================== */
.d-flex { display: flex; }
.d-grid { display: grid; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-none { display: none; }

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.flex-column {
    display: flex;
    flex-direction: column;
}

/* ========================================
   19. BREADCRUMB
   ======================================== */
.breadcrumb-area {
    padding: 120px 0 80px;
    background: var(--bg-dark-tertiary);
}

body:not(.dark-bg) .breadcrumb-area {
    background: var(--bg-light-tertiary);
}

.breadcrumb-text h1 {
    font-size: 42px;
    margin-bottom: var(--spacing-sm);
}

.breadcrumb {
    justify-content: center;
    background: transparent;
    margin: 0;
}

.breadcrumb-item {
    color: var(--text-dark-muted);
}

body:not(.dark-bg) .breadcrumb-item {
    color: var(--text-light-muted);
}

.breadcrumb-item a {
    color: var(--primary-color);
}

.breadcrumb-item.active {
    color: var(--text-dark);
}

body:not(.dark-bg) .breadcrumb-item.active {
    color: var(--text-light);
}

/* ========================================
   20. PRELOADER
   ======================================== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-dark);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.preloader-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ========================================
   21. CONTACT SECTION
   ======================================== */
.contact-section {
    padding: var(--spacing-xxl) 0;
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.contact-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius-sm);
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    flex-shrink: 0;
}

/* ========================================
   22. BLOG SECTION
   ======================================== */
.blog-card {
    border-radius: var(--border-radius-md);
    overflow: hidden;
    background: var(--bg-dark-secondary);
    transition: var(--transition-normal);
}

body:not(.dark-bg) .blog-card {
    background: var(--bg-light);
    box-shadow: var(--shadow-sm);
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.blog-card .card-img-top {
    height: 220px;
}

.blog-card .card-body {
    padding: var(--spacing-md);
}

.blog-meta {
    font-size: 13px;
    color: var(--text-dark-muted);
    margin-bottom: var(--spacing-xs);
}

body:not(.dark-bg) .blog-meta {
    color: var(--text-light-muted);
}