/* =========================
   layout.css
   Reset + Variables
   Header + Footer
   ========================= */

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

:root {
    --color-bg-primary: #FFFFFF;
    --color-bg-secondary: #F6F8FA;
    --color-text-primary: #1F2933;
    --color-text-secondary: #4B5563;
    --color-accent: #1F6FA8;
    --color-accent-hover: #2FA4C7;
    --color-divider: #E5E7EB;
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

body {
    font-family: var(--font-primary);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===== HEADER ===== */

header {
    background-color: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-divider);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0,0,0,0.04);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    text-decoration: none;
}

.logo img {
    height: 60px;
    width: auto;
}

/* Tablette */
@media (max-width: 1024px) {
    .logo img { height: 44px; }
}

/* Mobile */
@media (max-width: 768px) {
    .logo img { height: 35px; }
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
    align-items: center;
    flex-wrap: nowrap;
    white-space: nowrap;
}

.nav-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--color-accent);
}

.btn-primary-header {
    background-color: transparent;
    color: var(--color-accent);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid var(--color-accent);
    display: inline-block;
    white-space: nowrap;
}

.btn-primary-header:hover,
.nav-links a.btn-primary-header:hover,
.btn-primary-header:active,
.nav-links a.btn-primary-header:active {
    background-color: var(--color-accent);
    color: white !important;
}

.lang-switcher {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    padding-left: 1.5rem;
    border-left: 1px solid var(--color-divider);
}

.lang-switcher a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.875rem;
    transition: color 0.3s ease;
    text-transform: uppercase;
}

.lang-switcher a.active { color: var(--color-accent); }
.lang-switcher a:hover { color: var(--color-accent); }

.lang-separator {
    color: var(--color-divider);
    font-weight: 400;
}

/* Header responsive */
@media (max-width: 768px) {
    .nav-links { display: none; }
}

/* ===== FOOTER ===== */

footer {
    background-color: var(--color-text-primary);
    color: white;
    padding: 4rem 2rem 2rem;
}

footer ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.footer-section p,
.footer-section a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    line-height: 1.8;
    display: block;
    margin-bottom: 0.5rem;
}

.footer-section a:hover {
    color: var(--color-accent-hover);
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    color: rgba(255,255,255,0.7);
    font-size: 0.875rem;
}

.footer-bottom a {
    color: rgba(255,255,255,0.9);
    text-decoration: underline;
    margin: 0 0.25rem;
}

.footer-bottom a:hover {
    color: var(--color-accent-hover);
}

.disclaimer {
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: rgba(255,255,255,0.5);
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}