/* ========================================
   PORTFOLIO - JULES MERIENNE
   Styles principaux
======================================== */

/* Variables CSS */
:root {
    --primary-blue: #3b82f6;
    --primary-dark: #1d4ed8;
    --secondary-blue: #2563eb;
    --secondary-dark: #1e40af;
    --purple-600: #9333ea;
    --purple-500: #a855f7;
    --green-500: #10b981;
    --gray-900: #111827;
    --gray-800: #1f2937;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-50: #f9fafb;
    --white: #ffffff;
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    --gradient-secondary: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    --shadow-primary: 0 4px 15px rgba(59, 130, 246, 0.3);
    --shadow-primary-hover: 0 8px 25px rgba(59, 130, 246, 0.4);
    --timing: cubic-bezier(0.4, 0, 0.2, 1);
    --timing-magnetic: cubic-bezier(0.23, 1, 0.32, 1);
}

/* Base styles */
body {
    font-family: 'Inter', sans-serif;
}

/* ========================================
   ANIMATIONS
======================================== */

/* Animation base styles */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s var(--timing);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

.animate-fade-up {
    opacity: 1;
    transform: translateY(0);
}

.animate-slide-right {
    opacity: 1;
    transform: translateX(0);
}

.animate-scale-up {
    opacity: 1;
    transform: scale(1);
}

.magnetic {
    transition: all 0.2s var(--timing);
}

/* Form focus animations */
input:focus, 
select:focus, 
textarea:focus {
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.15);
}

/* ========================================
   BUTTONS
======================================== */

.btn-primary {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    color: var(--white);
    background: var(--gradient-primary);
    border-radius: 12px;
    border: none;
    transition: all 0.3s var(--timing-magnetic);
    box-shadow: var(--shadow-primary);
    overflow: hidden;
    cursor: pointer;
}

.btn-primary-orange {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    color: var(--white);
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    border-radius: 12px;
    border: none;
    transition: all 0.3s var(--timing-magnetic);
    box-shadow: 0 4px 15px rgba(249, 115, 22, 0.3);
    overflow: hidden;
    cursor: pointer;
}

.btn-primary-orange:hover {
    transform: translateY(-2px);
    background: linear-gradient(135deg, #ea580c 0%, #c2410c 100%);
    box-shadow: 0 8px 25px rgba(249, 115, 22, 0.4);
}

.btn-primary-orange::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: left 0.6s ease;
}

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

.btn-primary-orange:active {
    transform: translateY(-1px) scale(0.98);
    transition: all 0.1s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary-hover);
    background: var(--gradient-secondary);
}

.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: left 0.6s ease;
}

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

.btn-primary:active {
    transform: translateY(-1px) scale(0.98);
    transition: all 0.1s ease;
}

.btn-secondary {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    color: #374151;
    background: var(--white);
    border-radius: 12px;
    border: 2px solid #e5e7eb;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-secondary:hover {
    transform: translateY(-2px);
    border-color: var(--primary-blue);
    color: var(--primary-blue);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.btn-white {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-dark);
    background: var(--white);
    border-radius: 12px;
    border: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    cursor: pointer;
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    background: #f8fafc;
}

.btn-premium {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    color: var(--white);
    background: var(--gradient-primary);
    border-radius: 12px;
    border: none;
    transition: all 0.3s var(--timing-magnetic);
    box-shadow: var(--shadow-primary);
    overflow: hidden;
    cursor: pointer;
}

.btn-premium:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-primary-hover);
    background: var(--gradient-secondary);
}

.btn-premium::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: left 0.6s ease;
}

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

.btn-premium:active {
    transform: translateY(-1px) scale(0.98);
    transition: all 0.1s ease;
}

.btn-outline {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-blue);
    background: transparent;
    border-radius: 12px;
    border: 2px solid var(--primary-blue);
    transition: all 0.3s var(--timing-magnetic);
    cursor: pointer;
}

.btn-outline:hover {
    transform: translateY(-2px);
    background: var(--primary-blue);
    color: var(--white);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.2);
}

.btn-outline:active {
    transform: translateY(-1px) scale(0.98);
    transition: all 0.1s ease;
}

.btn-outline-orange {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    color: #f97316;
    background: transparent;
    border-radius: 12px;
    border: 2px solid #f97316;
    transition: all 0.3s var(--timing-magnetic);
    cursor: pointer;
}

.btn-outline-orange:hover {
    transform: translateY(-2px);
    background: #f97316;
    color: var(--white);
    box-shadow: 0 8px 25px rgba(249, 115, 22, 0.2);
}

.btn-outline-orange:active {
    transform: translateY(-1px) scale(0.98);
    transition: all 0.1s ease;
}

/* ========================================
   CARDS & COMPONENTS
======================================== */

.stats-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: all 0.3s var(--timing);
    border: 1px solid #e5e7eb;
}

.stats-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-blue);
}

.feature-card {
    background: var(--white);
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: all 0.3s var(--timing);
    border: 1px solid #f3f4f6;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-blue);
}

.tech-stack-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
    border-radius: 12px;
    border: 1px solid #e5e7eb;
    transition: all 0.3s var(--timing);
    cursor: pointer;
}

.tech-stack-item:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.15);
    border-color: var(--primary-blue);
    background: linear-gradient(135deg, #eff6ff 0%, #ffffff 100%);
}

/* ========================================
   NAVIGATION ENHANCEMENTS
======================================== */

.nav-link {
    position: relative;
    overflow: hidden;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s var(--timing);
}

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

/* ========================================
   HERO SECTION
======================================== */

.hero-gradient {
    background: linear-gradient(135deg, #eff6ff 0%, #ffffff 50%, #f3e8ff 100%);
    position: relative;
    overflow: hidden;
}

.hero-gradient::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(147, 51, 234, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.floating-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.6;
    animation: float 6s ease-in-out infinite;
}

.floating-shape:nth-child(1) {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #3b82f6, #8b5cf6);
    top: 20%;
    left: 10%;
}

.floating-shape:nth-child(2) {
    width: 60px;
    height: 60px;
    background: linear-gradient(45deg, #10b981, #3b82f6);
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.floating-shape:nth-child(3) {
    width: 100px;
    height: 100px;
    background: linear-gradient(45deg, #8b5cf6, #ec4899);
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

/* ========================================
   KEYFRAMES
======================================== */

@keyframes float {
    0%, 100% { 
        transform: translateY(0px) rotate(0deg); 
    }
    50% { 
        transform: translateY(-20px) rotate(180deg); 
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ========================================
   RESPONSIVE DESIGN
======================================== */

@media (max-width: 768px) {
    .floating-shape {
        display: none;
    }
    
    .stats-card {
        padding: 20px;
    }
    
    .feature-card {
        padding: 24px;
    }
    
    .btn-primary,
    .btn-secondary,
    .btn-white,
    .btn-premium {
        padding: 12px 24px;
        font-size: 14px;
    }
}

/* ========================================
   UTILITY CLASSES
======================================== */

.gradient-text {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--purple-600) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.glassmorphism {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.text-shadow {
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hover-lift {
    transition: transform 0.3s var(--timing);
}

.hover-lift:hover {
    transform: translateY(-4px);
}

.cv-download-btn {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    align-items: center;
    gap: 0.5em;
    padding: 10px 18px;
    background: #2563eb;
    color: #fff;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    box-shadow: 0 2px 8px rgba(37,99,235,0.15);
    border: none;
    z-index: 1000;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s, transform 0.2s;
}

.cv-download-btn:hover {
    background: #1d4ed8;
    transform: translateY(-2px) scale(1.04);
}

.cv-download-btn svg {
    width: 18px;
    height: 18px;
    margin-left: 4px;
}

@media (max-width: 600px) {
    .cv-download-btn {
        bottom: 12px;
        right: 12px;
        padding: 8px 12px;
        font-size: 0.95rem;
    }
}