/* ========================================
   MECAPRO Stock - UI Moderne v3.0
   Design minimaliste et intuitif
   ======================================== */

:root {
    --gsm-primary: #6366f1;
    --gsm-success: #10b981;
    --gsm-warning: #f59e0b;
    --gsm-danger: #ef4444;
    --gsm-dark: #0f172a;
    --gsm-gray: #64748b;
    --gsm-light: #f1f5f9;
    --gsm-white: #ffffff;
    --gsm-border: #e2e8f0;
    
    --radius: 16px;
    --radius-sm: 12px;
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
}

* {
    box-sizing: border-box;
}

/* Overlay */
.gsm-popup-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(8px);
    z-index: 999999;
    padding: 20px;
}

.gsm-popup-overlay.active {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Container */
.gsm-popup-container {
    background: var(--gsm-white);
    width: 100%;
    max-width: 1200px;
    max-height: 90vh;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Header */
.gsm-popup-header {
    background: linear-gradient(135deg, var(--gsm-primary) 0%, #8b5cf6 100%);
    color: white;
    padding: 24px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.gsm-header-content h1 {
    margin: 0;
    font-size: 24px;
    font-weight: 700;
}

.gsm-header-content p {
    margin: 4px 0 0 0;
    opacity: 0.9;
    font-size: 14px;
}

.gsm-close-popup {
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.gsm-close-popup:hover {
    background: rgba(255,255,255,0.3);
    transform: scale(1.1);
}

/* Navigation */
.gsm-main-nav {
    display: flex;
    background: var(--gsm-white);
    border-bottom: 1px solid var(--gsm-border);
    padding: 0 16px;
}

.gsm-nav-btn {
    flex: 1;
    background: none;
    border: none;
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: var(--gsm-gray);
    transition: all 0.2s;
    border-bottom: 3px solid transparent;
    position: relative;
    bottom: -1px;
}

.gsm-nav-icon {
    font-size: 24px;
}

.gsm-nav-label {
    font-size: 13px;
    font-weight: 600;
}

.gsm-nav-btn:hover {
    color: var(--gsm-primary);
    background: rgba(99,102,241,0.05);
}

.gsm-nav-btn.active {
    color: var(--gsm-primary);
    border-bottom-color: var(--gsm-primary);
}

/* Content */
.gsm-content {
    flex: 1;
    overflow-y: auto;
    background: var(--gsm-light);
}

.gsm-view {
    display: none;
    padding: 32px;
    animation: fadeIn 0.3s ease;
}

.gsm-view.active {
    display: block;
}

/* Section Header */
.gsm-section-header {
    margin-bottom: 32px;
}

.gsm-section-header h2 {
    margin: 0 0 8px 0;
    font-size: 28px;
    color: var(--gsm-dark);
}

.gsm-section-header p {
    margin: 0;
    color: var(--gsm-gray);
    font-size: 16px;
}

.gsm-header-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

/* Overview */
.gsm-overview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.gsm-overview-header h2 {
    margin: 0;
    font-size: 24px;
    color: var(--gsm-dark);
}

.gsm-quick-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.gsm-quick-stat {
    background: white;
    padding: 32px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.2s;
}

.gsm-quick-stat:hover {
    transform: translateY(-4px);
}

.gsm-stat-number {
    font-size: 48px;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 8px;
}

.gsm-stat-text {
    color: var(--gsm-gray);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.gsm-stat-primary .gsm-stat-number { color: var(--gsm-primary); }
.gsm-stat-warning .gsm-stat-number { color: var(--gsm-warning); }
.gsm-stat-success .gsm-stat-number { color: var(--gsm-success); }

/* Alertes Box */
.gsm-alertes-box {
    background: white;
    padding: 24px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    margin-bottom: 32px;
}

.gsm-alertes-box h3 {
    margin: 0 0 16px 0;
    font-size: 18px;
    color: var(--gsm-dark);
}

#gsm-alertes-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.gsm-alerte-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: #fef3c7;
    border-left: 4px solid var(--gsm-warning);
    border-radius: 8px;
    font-size: 14px;
}

/* Quick Actions */
.gsm-quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
}

.gsm-action-btn {
    padding: 24px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: var(--shadow);
    color: white;
}

.gsm-action-entree {
    background: linear-gradient(135deg, var(--gsm-success) 0%, #059669 100%);
}

.gsm-action-sortie {
    background: linear-gradient(135deg, var(--gsm-danger) 0%, #dc2626 100%);
}

.gsm-action-stock {
    background: linear-gradient(135deg, var(--gsm-primary) 0%, #8b5cf6 100%);
}

.gsm-action-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px -8px rgba(0,0,0,0.3);
}

/* Action Cards */
.gsm-action-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.gsm-card {
    background: white;
    padding: 40px 32px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.2s;
}

.gsm-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.gsm-card-icon {
    font-size: 64px;
    margin-bottom: 16px;
}

.gsm-card h3 {
    margin: 0 0 8px 0;
    font-size: 22px;
    color: var(--gsm-dark);
}

.gsm-card p {
    margin: 0 0 24px 0;
    color: var(--gsm-gray);
    font-size: 14px;
}

.gsm-card-btn {
    padding: 14px 32px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    color: white;
}

.gsm-card-new .gsm-card-btn {
    background: var(--gsm-primary);
}

.gsm-card-restock .gsm-card-btn {
    background: var(--gsm-success);
}

.gsm-card-btn:hover {
    transform: scale(1.05);
}

/* Matières List */
.gsm-matieres-list {
    background: white;
    padding: 24px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
}

.gsm-list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    gap: 16px;
}

.gsm-list-header h3 {
    margin: 0;
    font-size: 18px;
    color: var(--gsm-dark);
}

.gsm-search-input {
    padding: 10px 16px;
    border: 2px solid var(--gsm-border);
    border-radius: 8px;
    font-size: 14px;
    width: 300px;
    transition: border-color 0.2s;
}

.gsm-search-input:focus {
    outline: none;
    border-color: var(--gsm-primary);
}

#gsm-entree-items,
#gsm-sortie-items {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.gsm-matiere-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: var(--gsm-light);
    border-radius: 8px;
    transition: all 0.2s;
    cursor: pointer;
}

.gsm-matiere-item:hover {
    background: #e0e7ff;
    transform: translateX(4px);
}

.gsm-matiere-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.gsm-matiere-color {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 3px solid white;
    box-shadow: var(--shadow);
}

.gsm-matiere-name {
    font-weight: 600;
    color: var(--gsm-dark);
    font-size: 16px;
}

.gsm-matiere-stock {
    color: var(--gsm-gray);
    font-size: 14px;
}

.gsm-matiere-badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.gsm-badge-alert {
    background: #fef3c7;
    color: #92400e;
}

.gsm-badge-ok {
    background: #d1fae5;
    color: #065f46;
}

/* Stock Grid */
.gsm-stock-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.gsm-stock-card {
    background: white;
    padding: 24px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    transition: transform 0.2s;
    cursor: pointer;
}

.gsm-stock-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.gsm-stock-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}

.gsm-stock-card-color {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.gsm-stock-card-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--gsm-dark);
    margin: 0 0 8px 0;
}

.gsm-stock-card-qty {
    font-size: 32px;
    font-weight: 800;
    color: var(--gsm-primary);
    margin: 0;
}

.gsm-stock-card-unit {
    color: var(--gsm-gray);
    font-size: 14px;
}

/* Modals */
.gsm-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    z-index: 9999999;
    padding: 20px;
}

.gsm-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

.gsm-modal-content {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.gsm-modal-compact {
    max-width: 450px;
}

.gsm-modal-header {
    padding: 24px 32px;
    border-bottom: 1px solid var(--gsm-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.gsm-modal-header h3 {
    margin: 0;
    font-size: 20px;
    color: var(--gsm-dark);
}

.gsm-modal-close {
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: var(--gsm-gray);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s;
}

.gsm-modal-close:hover {
    background: var(--gsm-light);
}

.gsm-modal-content form {
    padding: 32px;
}

/* Form */
.gsm-form-field {
    margin-bottom: 20px;
}

.gsm-form-field label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--gsm-dark);
    font-size: 14px;
}

.gsm-form-field input,
.gsm-form-field select,
.gsm-form-field textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gsm-border);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.2s;
    background: white;
}

.gsm-form-field input:focus,
.gsm-form-field select:focus,
.gsm-form-field textarea:focus {
    outline: none;
    border-color: var(--gsm-primary);
}

.gsm-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.gsm-form-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 24px;
}

.gsm-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.gsm-btn-primary {
    background: var(--gsm-primary);
    color: white;
}

.gsm-btn-success {
    background: var(--gsm-success);
    color: white;
}

.gsm-btn-danger {
    background: var(--gsm-danger);
    color: white;
}

.gsm-btn-cancel {
    background: var(--gsm-light);
    color: var(--gsm-gray);
}

.gsm-btn:hover {
    transform: translateY(-1px);
}

.gsm-btn-icon {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    transition: background 0.2s;
}

.gsm-btn-icon:hover {
    background: var(--gsm-light);
}

/* Stock Info */
.gsm-current-stock,
.gsm-new-stock {
    padding: 16px;
    background: var(--gsm-light);
    border-radius: 8px;
    text-align: center;
    margin-bottom: 20px;
}

.gsm-current-stock strong,
.gsm-new-stock strong {
    font-size: 24px;
    color: var(--gsm-primary);
    margin: 0 8px;
}

/* Toast */
.gsm-toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 16px 24px;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    z-index: 99999999;
    animation: slideIn 0.3s ease;
    color: white;
    font-weight: 600;
}

@keyframes slideIn {
    from { transform: translateX(400px); }
    to { transform: translateX(0); }
}

.gsm-toast.success { background: var(--gsm-success); }
.gsm-toast.error { background: var(--gsm-danger); }
.gsm-toast.warning { background: var(--gsm-warning); }

/* Responsive */
@media (max-width: 768px) {
    .gsm-popup-overlay {
        padding: 0;
    }
    
    .gsm-popup-container {
        max-height: 100vh;
        border-radius: 0;
    }
    
    .gsm-view {
        padding: 20px;
    }
    
    .gsm-main-nav {
        overflow-x: auto;
    }
    
    .gsm-nav-btn {
        flex: none;
        min-width: 100px;
    }
    
    .gsm-action-cards,
    .gsm-quick-actions,
    .gsm-quick-stats {
        grid-template-columns: 1fr;
    }
    
    .gsm-form-row {
        grid-template-columns: 1fr;
    }
    
    .gsm-search-input {
        width: 100%;
    }
    
    .gsm-stock-grid {
        grid-template-columns: 1fr;
    }
}