/**
 * Dans Mon Quartier - Shared Styles
 * Styles communs pour tous les projets
 * Chaque projet définit ses propres variables CSS (couleurs, fonts)
 */

/* ============================================
   CSS RESET
   ============================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body, system-ui, sans-serif);
    font-weight: 400;
    color: var(--text-dark, #222222);
    background: var(--bg-main, #FAF8F5);
    line-height: 1.6;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

@media (max-width: 768px) {
    .container {
        padding: 0 28px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 24px;
    }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: var(--transition, 0.3s ease);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-primary, #8B0000);
    color: var(--white, #FFFFFF);
    box-shadow: 0 4px 20px rgba(0,0,0,0.12);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 40px rgba(0,0,0,0.16);
}

.btn-secondary {
    background: transparent;
    color: var(--white, #FFFFFF);
    border: 2px solid rgba(255,255,255,0.3);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.5);
}

.btn svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 500;
    color: var(--text-dark, #222);
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #E5E5E5;
    border-radius: 6px;
    font-size: 1rem;
    transition: var(--transition, 0.3s ease);
    background: var(--white, #FFFFFF);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary, #8B0000);
}

.form-group textarea {
    min-height: 140px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   SECTION HEADERS
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-display, sans-serif);
    font-size: 0.9rem;
    letter-spacing: 3px;
    color: var(--color-primary, #8B0000);
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-display, sans-serif);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    color: var(--text-dark, #1a1a1a);
    letter-spacing: 1px;
    line-height: 1.1;
}

.section-desc {
    max-width: 600px;
    margin: 16px auto 0;
    color: var(--text-muted, #666666);
    font-size: 1.1rem;
}

@media (max-width: 768px) {
    .section-header {
        margin-bottom: 48px;
    }
}

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

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Scroll Reveal Animation */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   SHADOWS (CSS Variables)
   ============================================ */
:root {
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.16);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   MOBILE CTA (Fixed bottom button)
   ============================================ */
.mobile-cta {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-primary, #8B0000);
    padding: 16px 24px;
    z-index: 999;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.2);
}

.mobile-cta a {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--white, #FFFFFF);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
}

.mobile-cta svg {
    width: 24px;
    height: 24px;
    fill: var(--white, #FFFFFF);
}

@media (max-width: 768px) {
    .mobile-cta {
        display: block;
    }
}

@media (max-width: 480px) {
    .mobile-cta {
        padding: 14px 20px;
    }

    .mobile-cta a {
        font-size: 1rem;
    }
}