/* ============================================
   LAHMAQ BAMBOO — Formulaire d'inscription
   Thème : Nature / Bambou / Premium
   ============================================ */

/* --- Variables --- */
:root {
    --vert-principal: #2e7d32;
    --vert-clair: #66bb6a;
    --vert-tendre: #a5d6a7;
    --vert-bg: #e8f5e9;
    --accent-menthe: #20c997;
    --accent-dore: #c9a961;
    --gris-texte: #2c3e50;
    --gris-doux: #6c757d;
    --blanc: #ffffff;
    --ombre-sm: 0 2px 8px rgba(46, 125, 50, 0.08);
    --ombre-md: 0 8px 24px rgba(46, 125, 50, 0.12);
    --ombre-lg: 0 20px 50px rgba(46, 125, 50, 0.18);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Base --- */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    background: 
        radial-gradient(circle at 10% 20%, rgba(165, 214, 167, 0.35) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(32, 201, 151, 0.15) 0%, transparent 45%),
        linear-gradient(135deg, #e8f5e9 0%, #f1f8e9 50%, #e0f2f1 100%);
    background-attachment: fixed;
    min-height: 100vh;
    color: var(--gris-texte);
    line-height: 1.6;
    padding: 2rem 0;
    position: relative;
    overflow-x: hidden;
}

/* Effet décoratif : feuilles de bambou en arrière-plan */
body::before,
body::after {
    content: '';
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    z-index: 0;
    pointer-events: none;
}

body::before {
    width: 400px;
    height: 400px;
    background: var(--vert-tendre);
    top: -150px;
    left: -150px;
    animation: floatSlow 12s ease-in-out infinite;
}

body::after {
    width: 500px;
    height: 500px;
    background: var(--accent-menthe);
    bottom: -200px;
    right: -200px;
    animation: floatSlow 15s ease-in-out infinite reverse;
}

@keyframes floatSlow {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -30px) scale(1.05); }
}

/* --- Carte principale --- */
.card {
    position: relative;
    z-index: 1;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: 24px !important;
    box-shadow: var(--ombre-lg);
    overflow: hidden;
    animation: fadeInUp 0.6s ease-out;
}

/* Bande décorative en haut de la carte */
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--vert-principal), var(--accent-menthe), var(--accent-dore), var(--vert-principal));
    background-size: 300% 100%;
    animation: gradientMove 6s linear infinite;
}

@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    100% { background-position: 300% 50%; }
}

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

/* --- En-tête du formulaire --- */
.text-center.mb-4 i.bi-brush-fill,
.text-center.mb-4 i.bi-person-plus-fill {
    background: linear-gradient(135deg, var(--vert-principal), var(--accent-menthe));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
    animation: pulseIcon 3s ease-in-out infinite;
}

@keyframes pulseIcon {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.text-center h2 {
    color: var(--vert-principal);
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-top: 0.5rem;
}

.text-center p.text-muted {
    color: var(--gris-doux) !important;
    font-size: 1.05rem;
}

/* --- Titres de sections --- */
h5.text-success {
    color: var(--vert-principal) !important;
    font-weight: 700;
    border-bottom: 2px solid transparent;
    border-image: linear-gradient(90deg, var(--vert-tendre), transparent) 1;
    padding-bottom: 10px;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.15rem;
}

h5.text-success i {
    background: linear-gradient(135deg, var(--vert-principal), var(--accent-menthe));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 1.3rem;
}

/* --- Labels et inputs --- */
.form-label {
    font-weight: 600;
    color: var(--gris-texte);
    font-size: 0.92rem;
    margin-bottom: 6px;
    letter-spacing: 0.2px;
}

.form-label::after {
    content: '';
}

.form-control,
.form-select {
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 0.95rem;
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.7);
}

.form-control:hover {
    border-color: var(--vert-tendre);
    background: var(--blanc);
}

.form-control:focus {
    border-color: var(--vert-clair);
    background: var(--blanc);
    box-shadow: 0 0 0 4px rgba(102, 187, 106, 0.15);
    outline: none;
}

.form-control::placeholder {
    color: #b0b0b0;
    font-style: italic;
}

/* Input-group (IFU) */
.input-group-text {
    background: linear-gradient(135deg, var(--vert-bg), #f1f8e9);
    border: 2px solid #e0e0e0;
    border-right: none;
    color: var(--vert-principal);
    border-radius: 12px 0 0 12px;
    font-size: 1rem;
    padding: 12px 16px;
}

.input-group .form-control {
    border-radius: 0 12px 12px 0;
}

.input-group:focus-within .input-group-text {
    border-color: var(--vert-clair);
    background: linear-gradient(135deg, #c8e6c9, #dcedc8);
}

/* --- Bouton principal --- */
.btn-success {
    background: linear-gradient(135deg, var(--vert-principal), var(--accent-menthe));
    border: none;
    border-radius: 14px;
    padding: 14px 24px;
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: 0.5px;
    color: var(--blanc);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(46, 125, 50, 0.25);
}

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

.btn-success:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(46, 125, 50, 0.35);
    color: var(--blanc);
}

.btn-success:active {
    transform: translateY(-1px);
}

.btn-success:disabled {
    opacity: 0.75;
    cursor: not-allowed;
    transform: none;
}

/* --- Case RGPD --- */
.form-check-input {
    border: 2px solid #cfd8dc;
    border-radius: 6px;
    width: 1.15em;
    height: 1.15em;
    margin-top: 0.2em;
    cursor: pointer;
    transition: var(--transition);
}

.form-check-input:checked {
    background-color: var(--vert-principal);
    border-color: var(--vert-principal);
    box-shadow: 0 0 0 4px rgba(102, 187, 106, 0.15);
}

.form-check-input:focus {
    border-color: var(--vert-clair);
    box-shadow: 0 0 0 4px rgba(102, 187, 106, 0.2);
}

.form-check-label {
    cursor: pointer;
    color: var(--gris-texte);
    font-size: 0.92rem;
}

/* --- Aperçu des images --- */
#preview {
    margin-top: 12px;
    padding: 4px;
}

.preview-item {
    position: relative;
    width: 120px;
    height: 120px;
    border-radius: 14px;
    overflow: hidden;
    border: 3px solid transparent;
    background: linear-gradient(var(--blanc), var(--blanc)) padding-box,
                linear-gradient(135deg, var(--vert-clair), var(--accent-menthe)) border-box;
    box-shadow: var(--ombre-sm);
    transition: var(--transition);
    animation: zoomIn 0.4s ease-out;
}

.preview-item:hover {
    transform: scale(1.05) rotate(1deg);
    box-shadow: var(--ombre-md);
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.6);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.preview-item:hover img {
    transform: scale(1.1);
}

.preview-item .badge-num {
    position: absolute;
    top: 6px;
    left: 6px;
    background: linear-gradient(135deg, var(--vert-principal), var(--accent-menthe));
    color: var(--blanc);
    font-size: 0.72rem;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 20px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    z-index: 2;
}

/* --- Input file personnalisé --- */
.form-control[type="file"] {
    padding: 10px 14px;
    cursor: pointer;
}

.form-control[type="file"]::file-selector-button {
    background: linear-gradient(135deg, var(--vert-bg), #c8e6c9);
    color: var(--vert-principal);
    border: none;
    border-radius: 8px;
    padding: 8px 16px;
    font-weight: 600;
    cursor: pointer;
    margin-right: 12px;
    transition: var(--transition);
}

.form-control[type="file"]::file-selector-button:hover {
    background: linear-gradient(135deg, var(--vert-tendre), var(--vert-clair));
    color: var(--blanc);
}

/* --- Alertes --- */
.alert {
    border: none;
    border-radius: 14px;
    padding: 16px 20px;
    font-weight: 500;
    box-shadow: var(--ombre-sm);
    animation: slideDown 0.4s ease-out;
}

.alert-success {
    background: linear-gradient(135deg, #d4edda, #c8e6c9);
    color: #1b5e20;
    border-left: 4px solid var(--vert-principal);
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da, #ffcdd2);
    color: #b71c1c;
    border-left: 4px solid #dc3545;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Footer --- */
p.text-center.text-muted.mt-3 {
    color: var(--gris-doux) !important;
    font-size: 0.85rem;
    letter-spacing: 0.3px;
}

/* --- Texte d'aide --- */
.form-text {
    color: var(--gris-doux);
    font-size: 0.82rem;
    margin-top: 6px;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    body {
        padding: 1rem 0;
    }

    .card-body {
        padding: 1.5rem 1.25rem !important;
    }

    .text-center h2 {
        font-size: 1.5rem;
    }

    .preview-item {
        width: 90px;
        height: 90px;
    }

    h5.text-success {
        font-size: 1.05rem;
    }

    .btn-success {
        font-size: 1rem;
        padding: 12px 20px;
    }
}

/* --- Petits écrans --- */
@media (max-width: 480px) {
    .preview-item {
        width: 75px;
        height: 75px;
    }

    .text-center.mb-4 i.bi-brush-fill,
    .text-center.mb-4 i.bi-person-plus-fill {
        font-size: 2.5rem !important;
    }
}

/* --- Accessibilité : focus visible --- */
*:focus-visible {
    outline: 2px solid var(--vert-clair);
    outline-offset: 2px;
}

/* --- Réduction des animations pour accessibilité --- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* --- Scrollbar personnalisée --- */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--vert-bg);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--vert-clair), var(--vert-principal));
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--vert-principal);
}