/* ==========================================================================
   DDM Backoffice - Design System & Stylesheet (Premium Dark Theme)
   ========================================================================== */

:root {
    --bg-main: #0B0F19;
    --bg-card: rgba(17, 25, 40, 0.75);
    --border-card: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(99, 102, 241, 0.15);
    
    --text-primary: #F3F4F6;
    --text-secondary: #9CA3AF;
    --text-muted: #6B7280;
    
    /* Cores de Status e Ação */
    --primary: #4F46E5;
    --primary-hover: #6366F1;
    --primary-glow: rgba(79, 70, 229, 0.4);
    
    --secondary: #1F2937;
    --secondary-hover: #374151;
    
    --status-success: #10B981;
    --status-success-bg: rgba(16, 185, 129, 0.15);
    --status-active: #3B82F6;
    --status-active-bg: rgba(59, 130, 246, 0.15);
    --status-pending: #F59E0B;
    --status-pending-bg: rgba(245, 158, 11, 0.15);
    --status-error: #EF4444;
    --status-error-bg: rgba(239, 68, 68, 0.15);
    
    --font-sans: 'Inter', sans-serif;
    --font-display: 'Outfit', sans-serif;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.5;
    overflow-x: hidden;
    background-image: 
        radial-gradient(at 0% 0%, rgba(79, 70, 229, 0.12) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.08) 0px, transparent 50%);
    background-attachment: fixed;
    min-height: 100vh;
}

/* Layout Principal */
.app-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* Header */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-card);
}

.logo-area {
    position: relative;
    display: flex;
    align-items: center;
}

.logo-area h1 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: -0.025em;
}

.logo-area h1 span {
    color: var(--primary-hover);
    background: linear-gradient(135deg, #6366F1, #10B981);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-glow {
    position: absolute;
    width: 60px;
    height: 60px;
    background: var(--primary);
    filter: blur(40px);
    opacity: 0.4;
    left: -10px;
    z-index: -1;
}

.system-status {
    display: flex;
    align-items: center;
}

.status-indicator {
    display: flex;
    align-items: center;
    background: rgba(17, 25, 40, 0.5);
    border: 1px solid var(--border-card);
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    font-size: 0.85rem;
    font-weight: 500;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--status-success);
    border-radius: 50%;
    margin-right: 0.5rem;
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    animation: pulse 1.8s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    }
    70% {
        transform: scale(1);
        box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
    }
    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
    }
}

.control-actions {
    display: flex;
    gap: 0.75rem;
}

/* Botões */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.65rem 1.25rem;
    border-radius: 8px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn svg {
    transition: transform 0.25s ease;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px var(--primary-glow);
}

.btn-primary:hover svg {
    transform: rotate(45deg);
}

.btn-secondary {
    background-color: var(--secondary);
    color: var(--text-primary);
    border-color: var(--border-card);
}

.btn-secondary:hover {
    background-color: var(--secondary-hover);
    transform: translateY(-1px);
    border-color: var(--text-secondary);
}

.btn-text {
    background: transparent;
    color: var(--text-secondary);
    padding: 0.5rem 0.75rem;
}

.btn-text:hover {
    color: var(--text-primary);
}

.btn-text:hover svg {
    transform: rotate(-180deg);
}

/* Glassmorphism Cards */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-card);
    border-radius: 12px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
    border-color: var(--border-glow);
}

/* Estatísticas */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 1.5rem;
}

.stat-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 48px;
    height: 48px;
    border-radius: 10px;
}

.icon-blue { background-color: rgba(59, 130, 246, 0.12); color: #3B82F6; }
.icon-purple { background-color: rgba(139, 92, 246, 0.12); color: #8B5CF6; }
.icon-green { background-color: rgba(16, 185, 129, 0.12); color: #10B981; }
.icon-emerald { background-color: rgba(5, 150, 105, 0.12); color: #34D399; }

.stat-label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.stat-data h3 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Filtros */
.filter-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    padding: 1.25rem 1.5rem;
    margin-bottom: 2.5rem;
}

.search-box {
    position: relative;
    flex: 1;
    display: flex;
    align-items: center;
}

.search-box svg {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
}

.search-box input {
    width: 100%;
    background-color: rgba(17, 25, 40, 0.5);
    border: 1px solid var(--border-card);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 0.65rem 1rem 0.65rem 2.75rem;
    font-size: 0.95rem;
    font-family: var(--font-sans);
    transition: all 0.3s ease;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-hover);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.filter-options select {
    background-color: rgba(17, 25, 40, 0.5);
    border: 1px solid var(--border-card);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 0.65rem 1.5rem;
    font-size: 0.95rem;
    font-family: var(--font-sans);
    outline: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-options select:focus {
    border-color: var(--primary-hover);
}

/* Conteúdo Principal */
.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}

.content-header h2 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
}

.lotes-container {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

/* Lote Card */
.lote-wrapper {
    display: flex;
    flex-direction: column;
}

.lote-header {
    display: grid;
    grid-template-columns: auto 1fr auto auto auto;
    align-items: center;
    gap: 1.5rem;
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    user-select: none;
    border-radius: 12px;
}

.lote-toggle-icon {
    transition: transform 0.3s ease;
    color: var(--text-secondary);
}

.lote-wrapper.expanded .lote-toggle-icon {
    transform: rotate(90deg);
}

.lote-subject-group h4 {
    font-family: var(--font-sans);
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.15rem;
}

.lote-subject-group span {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.lote-meta {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Detalhes do Lote (Alunos) */
.lote-details {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out, padding 0.4s ease;
    background: rgba(17, 25, 40, 0.4);
    border-bottom-left-radius: 12px;
    border-bottom-right-radius: 12px;
    border-top: 1px solid transparent;
}

.lote-wrapper.expanded .lote-header {
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
}

.lote-wrapper.expanded .lote-details {
    max-height: 1000px;
    padding: 1.5rem;
    border-top: 1px solid var(--border-card);
}

.alunos-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.alunos-table th {
    text-align: left;
    color: var(--text-muted);
    font-weight: 600;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-card);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.alunos-table td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
}

.alunos-table tr:last-child td {
    border-bottom: none;
}

/* Badges de Status */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.badge-success { background-color: var(--status-success-bg); color: var(--status-success); }
.badge-active { background-color: var(--status-active-bg); color: var(--status-active); }
.badge-pending { background-color: var(--status-pending-bg); color: var(--status-pending); }
.badge-error { background-color: var(--status-error-bg); color: var(--status-error); }

/* Ações do Simulador de WhatsApp */
.sim-actions-cell {
    text-align: right;
}

.sim-actions {
    display: flex;
    gap: 0.4rem;
    justify-content: flex-end;
}

.btn-sim {
    padding: 0.3rem 0.6rem;
    font-size: 0.75rem;
    border-radius: 6px;
    background-color: var(--secondary);
    border: 1px solid var(--border-card);
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn-sim-success:hover { background-color: var(--status-success-bg); color: var(--status-success); border-color: var(--status-success); }
.btn-sim-error:hover { background-color: var(--status-error-bg); color: var(--status-error); border-color: var(--status-error); }
.btn-sim-pending:hover { background-color: var(--status-pending-bg); color: var(--status-pending); border-color: var(--status-pending); }

/* Loading Spinner */
.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(79, 70, 229, 0.1);
    border-top: 3px solid var(--primary-hover);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    z-index: 9999;
}

.toast {
    background: rgba(17, 25, 40, 0.9);
    backdrop-filter: blur(8px);
    border-left: 4px solid var(--primary);
    border-top: 1px solid var(--border-card);
    border-right: 1px solid var(--border-card);
    border-bottom: 1px solid var(--border-card);
    color: var(--text-primary);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast-success { border-left-color: var(--status-success); }
.toast-error { border-left-color: var(--status-error); }