/* ===== PARIS LBP - CENTRALIZED STYLES ===== */

/* Font Imports */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@200;300;400;500;600;700&family=Fira+Code:wght@300;400;500&display=swap');

/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
    /* Core Colors */
    --primary: #2a2a2a;
    --primary-light: #4a4a4a;
    --primary-lighter: #6a6a6a;
    --primary-lightest: #8a8a8a;
    
    /* Accent Color System - Single Color Gradients */
    --accent-blue: #3b82f6;
    --accent-blue-light: #60a5fa;
    --accent-blue-lighter: #93c5fd;
    --accent-blue-dark: #1d4ed8;
    --accent-blue-gradient: linear-gradient(135deg, var(--accent-blue-dark) 0%, var(--accent-blue) 50%, var(--accent-blue-light) 100%);
    --accent-blue-gradient-soft: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-blue-light) 100%);
    
    --accent-purple: #5f5cf6;
    --accent-purple-light: #928bfa;
    --accent-purple-lighter: #b5bdfd;
    --accent-purple-dark: #2828d9;
    --accent-purple-gradient: linear-gradient(135deg, var(--accent-purple-dark) 0%, var(--accent-purple) 50%, var(--accent-purple-light) 100%);
    
    --accent-emerald: #10b981;
    --accent-emerald-light: #34d399;
    --accent-emerald-lighter: #6ee7b7;
    --accent-emerald-dark: #047857;
    --accent-emerald-gradient: linear-gradient(135deg, var(--accent-emerald-dark) 0%, var(--accent-emerald) 50%, var(--accent-emerald-light) 100%);
    
    --accent-amber: #f59e0b;
    --accent-amber-light: #fbbf24;
    --accent-amber-lighter: #fcd34d;
    --accent-amber-dark: #d97706;
    --accent-amber-gradient: linear-gradient(135deg, var(--accent-amber-dark) 0%, var(--accent-amber) 50%, var(--accent-amber-light) 100%);
    
    --accent-rose: #f43f5e;
    --accent-rose-light: #fb7185;
    --accent-rose-lighter: #fda4af;
    --accent-rose-dark: #e11d48;
    --accent-rose-gradient: linear-gradient(135deg, var(--accent-rose-dark) 0%, var(--accent-rose) 50%, var(--accent-rose-light) 100%);
    
    /* Text Colors */
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-muted: #999999;
    --text-light: #ffffff;
    
    /* Background Colors */
    --bg: #fafafa;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #eeeeee;
    --bg-dark: #1a1a1a;
    --bg-card: rgba(255, 255, 255, 0.95);
    
    /* Utility Colors */
    --border: rgba(42, 42, 42, 0.1);
    --border-light: rgba(255, 255, 255, 0.1);
    --glass: rgba(250, 250, 250, 0.8);
    --glass-dark: rgba(26, 26, 26, 0.8);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px -6px rgba(0, 0, 0, 0.15);
    
    /* Layout */
    --radius: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --header-height: 80px;
    
    /* Transitions */
    --transition: all 2.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 2.2s ease;
    --transition-slow: all 2.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    background: var(--bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== TYPOGRAPHY ===== */
.heading-xl {
    font-size: clamp(4rem, 8vw, 8rem);
    font-weight: 200;
    line-height: 1.1;
    letter-spacing: 2px;
}

.heading-lg {
    font-size: clamp(3rem, 6vw, 6rem);
    font-weight: 200;
    line-height: 1.1;
    letter-spacing: 1px;
}

.heading-md {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 300;
    line-height: 1.2;
}

.heading-sm {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 400;
    line-height: 1.3;
}

.text-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-lighter) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

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

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

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

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

/* ===== GLOBAL HEADER ===== */
.global-header {
    position: fixed;
    top: 0;
    width: 100%;
    height: var(--header-height);
    padding: 0 6rem;
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(250, 250, 250, 0.85);
    border-bottom: 1px solid var(--border);
}

.logo {
    font-size: 2rem;
    font-weight: 300;
    text-decoration: none;
    background: var(--accent-blue-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    opacity: 0.8;
    transition: var(--transition-fast);
}

.logo:hover {
    opacity: 1;
    transform: translateY(-1px);
}

/* Navigation Breadcrumb */
.nav-breadcrumb {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.1rem;
    font-weight: 300;
}

.nav-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
    padding: 0.5rem 1rem;
    border-radius: 6px;
}

.nav-breadcrumb a:hover {
    color: var(--accent-blue);
    background: rgba(59, 130, 246, 0.1);
}

.nav-breadcrumb .dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--text-muted);
}

.nav-breadcrumb .current {
    background: var(--accent-blue-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 400;
}

.nav-main {
    display: flex;
    gap: 3rem;
}

.nav-main a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 300;
    padding: 1rem 0;
    transition: var(--transition-fast);
    position: relative;
}

.nav-main a:hover {
    color: var(--text-primary);
}

.nav-main a.active {
    color: var(--accent-blue);
}

.nav-main a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-blue-gradient);
    border-radius: 1px;
}

/* ===== LAYOUT COMPONENTS ===== */
.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 6rem;
}

.container-sm {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 6rem;
}

.section {
    padding: 8rem 0;
}

.section-sm {
    padding: 4rem 0;
}

.grid {
    display: grid;
    gap: 4rem;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-auto {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

/* ===== CARDS ===== */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 3rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    transition: var(--transition-slow);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    position: relative;
    overflow: hidden;
}

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

.card-project {
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.card-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-lg);
}

.card-icon.blue {
    background: var(--accent-blue-gradient);
}

.card-icon.purple {
    background: var(--accent-purple-gradient);
}

.card-icon.emerald {
    background: var(--accent-emerald-gradient);
}

.card-icon.amber {
    background: var(--accent-amber-gradient);
}

.card-icon.rose {
    background: var(--accent-rose-gradient);
}

.card-title {
    font-size: 1.4rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.card-desc {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 2rem;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 400;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--accent-blue-gradient);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--accent-blue);
    border: 1px solid var(--accent-blue);
}

.btn-outline:hover {
    background: var(--accent-blue);
    color: white;
    transform: translateY(-2px);
}

/* ===== TAGS ===== */
.tags {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.tag {
    padding: 0.5rem 1.5rem;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: 25px;
    font-size: 0.85rem;
    font-weight: 400;
    transition: var(--transition);
}

.tag:hover {
    transform: translateY(-2px);
}

.tag.primary {
    background: var(--accent-blue-gradient);
    color: white;
}

.tag.purple {
    background: var(--accent-purple-gradient);
    color: white;
}

.tag.emerald {
    background: var(--accent-emerald-gradient);
    color: white;
}

.tag.amber {
    background: var(--accent-amber-gradient);
    color: white;
}

.tag.rose {
    background: var(--accent-rose-gradient);
    color: white;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(60px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-60px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(60px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes shimmer {
    0%, 100% {
        background-position: 200% center;
    }
    50% {
        background-position: -200% center;
    }
}

.animate-fadeIn {
    animation: fadeIn 1.2s ease-out;
}

.animate-fadeInUp {
    animation: fadeInUp 1.2s ease-out;
}

.animate-fadeInLeft {
    animation: fadeInLeft 1.2s ease-out;
}

.animate-fadeInRight {
    animation: fadeInRight 1.2s ease-out;
}

.animate-shimmer {
    background-size: 200% auto;
    animation: shimmer 3s infinite;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1200px) {
    .container,
    .container-sm {
        padding: 0 4rem;
    }
    
    .global-header {
        padding: 0 4rem;
    }
    
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .container,
    .container-sm {
        padding: 0 2rem;
    }
    
    .global-header {
        padding: 0 2rem;
    }
    
    .nav-main {
        gap: 2rem;
    }
    
    .nav-breadcrumb {
        display: none;
    }
    
    .section {
        padding: 4rem 0;
    }
    
    .card {
        padding: 2rem;
    }
}

@media (max-width: 480px) {
    .container,
    .container-sm {
        padding: 0 1rem;
    }
    
    .global-header {
        padding: 0 1rem;
    }
    
    .nav-main {
        gap: 1rem;
    }
    
    .logo {
        font-size: 1.5rem;
    }
}