/**
 * LINK-CARD DESIGN SYSTEM
 * Brand Book Application - v1.0
 * Standard professionnel de connexion humaine
 */

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
    /* Vert signature - Connexion humaine (12%) */
    --link-green: #42B574;
    --link-green-hover: #3DA367;
    --link-green-light: #F0F9F4;
    --link-green-accent: #7EE081;

    /* Bleu - Crédibilité (5%) */
    --link-blue: #4A7FBF;
    --link-blue-light: #EFF6FF;

    /* Gris - Structure (20%) */
    --link-gray-900: #2C2A27;
    --link-gray-700: #374151;
    --link-gray-600: #4B5563;
    --link-gray-500: #6B7280;
    --link-gray-400: #9CA3AF;
    --link-gray-300: #D1D5DB;
    --link-gray-200: #E5E7EB;
    --link-gray-100: #F3F4F6;

    /* Blanc - Respiration (60%) */
    --link-white: #F7F8F4;
    --white-pure: #FFFFFF;

    /* Utilitaires */
    --link-red: #EF4444;
    --link-red-light: #FEF2F2;
    --link-yellow: #F59E0B;
    --link-yellow-light: #FEF3C7;

    /* Typographie */
    --font-family: 'Manrope', system-ui, -apple-system, sans-serif;

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.16);

    /* Transitions */
    --duration-fast: 150ms;
    --duration-normal: 200ms;
    --duration-slow: 300ms;
    --ease-out: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   BASE
   ============================================ */
*, *::before, *::after {
    font-family: var(--font-family);
}

body {
    font-family: var(--font-family);
    color: var(--link-gray-900);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    font-family: var(--font-family);
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out);
    text-decoration: none;
    line-height: 1.5;
}

.btn-primary {
    background: var(--link-green);
    color: var(--white-pure);
    box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
    background: var(--link-green-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: var(--link-gray-700);
    border: 1.5px solid var(--link-gray-300);
}
.btn-secondary:hover {
    background: var(--link-gray-100);
    border-color: var(--link-gray-400);
}

.btn-ghost {
    background: transparent;
    color: var(--link-green);
    padding: 8px 16px;
}
.btn-ghost:hover {
    background: var(--link-green-light);
}

.btn-danger {
    background: var(--link-red);
    color: var(--white-pure);
}
.btn-danger:hover {
    background: #DC2626;
    transform: translateY(-1px);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 13px;
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background: var(--white-pure);
    border: 1px solid var(--link-gray-200);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: all var(--duration-normal) var(--ease-out);
}
.card-hover:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/* ============================================
   INPUTS
   ============================================ */
.input {
    width: 100%;
    padding: 10px 16px;
    font-size: 14px;
    font-family: var(--font-family);
    color: var(--link-gray-900);
    background: var(--white-pure);
    border: 1.5px solid var(--link-gray-300);
    border-radius: var(--radius-md);
    transition: all var(--duration-normal) var(--ease-out);
    outline: none;
}
.input:focus {
    border-color: var(--link-green);
    box-shadow: 0 0 0 3px var(--link-green-light);
}
.input::placeholder {
    color: var(--link-gray-400);
}
.input-error {
    border-color: var(--link-red);
}
.input-error:focus {
    box-shadow: 0 0 0 3px var(--link-red-light);
}

select.input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%236B7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3E%3C/svg%3E");
    background-position: right 12px center;
    background-repeat: no-repeat;
    background-size: 16px;
    padding-right: 40px;
}

textarea.input {
    resize: vertical;
    min-height: 100px;
}

/* ============================================
   LABELS
   ============================================ */
.label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--link-gray-600);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ============================================
   ALERTS
   ============================================ */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: 14px;
    border: 1px solid;
    display: flex;
    align-items: center;
    gap: 10px;
}
.alert-success {
    background: var(--link-green-light);
    border-color: #86EFAC;
    color: #166534;
}
.alert-error {
    background: var(--link-red-light);
    border-color: #FCA5A5;
    color: #991B1B;
}
.alert-info {
    background: var(--link-blue-light);
    border-color: #93C5FD;
    color: #1E40AF;
}

/* ============================================
   BADGES
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    font-size: 12px;
    font-weight: 500;
    border-radius: var(--radius-full);
    background: var(--link-gray-100);
    color: var(--link-gray-600);
}
.badge-green {
    background: var(--link-green-light);
    color: var(--link-green);
}
.badge-blue {
    background: var(--link-blue-light);
    color: var(--link-blue);
}

/* ============================================
   SIDEBAR NAV
   ============================================ */
.sidebar-link {
    display: flex;
    align-items: center;
    padding: 10px 16px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 400;
    color: var(--white-pure);
    opacity: 0.85;
    transition: all var(--duration-normal) var(--ease-out);
    text-decoration: none;
}
.sidebar-link:hover {
    background: rgba(255,255,255,0.1);
    opacity: 1;
}
.sidebar-link.active {
    background: rgba(255,255,255,0.15);
    opacity: 1;
    font-weight: 500;
    border-left: 3px solid var(--link-green-accent);
    padding-left: 13px;
}

/* ============================================
   STAT CARDS
   ============================================ */
.stat-card {
    background: var(--white-pure);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    border: 1px solid var(--link-gray-200);
    box-shadow: var(--shadow-xs);
    transition: all var(--duration-normal) var(--ease-out);
}
.stat-card:hover {
    box-shadow: var(--shadow-sm);
}
.stat-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}
.stat-label {
    font-size: 13px;
    color: var(--link-gray-500);
    font-weight: 400;
}
.stat-value {
    font-size: 28px;
    font-weight: 600;
    color: var(--link-gray-900);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

/* ============================================
   MODAL
   ============================================ */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
    padding: 16px;
}
.modal-content {
    background: var(--white-pure);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 480px;
    width: 100%;
    padding: 24px;
    max-height: 90vh;
    overflow-y: auto;
}

/* ============================================
   UTILITY
   ============================================ */
.text-link-green { color: var(--link-green); }
.bg-link-green { background-color: var(--link-green); }
.bg-link-white { background-color: var(--link-white); }
.bg-link-green-light { background-color: var(--link-green-light); }
.border-link-green { border-color: var(--link-green); }

/* Focus ring for accessibility */
.focus-ring:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--link-green-light);
}

/* Fix Font Awesome icons - prevent Tailwind/Manrope override */
i.fas, i.far, i.fab,
i.fa-solid, i.fa-regular, i.fa-brands {
    font-family: "Font Awesome 6 Free" !important;
    font-weight: 900;
}
i.fab, i.fa-brands {
    font-family: "Font Awesome 6 Brands" !important;
    font-weight: 400;
}

/* Fix Font Awesome 6 Free */
.fas, .fa-solid {
    font-family: "Font Awesome 6 Free" !important;
    font-weight: 900 !important;
}
.fab, .fa-brands {
    font-family: "Font Awesome 6 Brands" !important;
    font-weight: 400 !important;
}