/* ===== SYSTEM PREMIUM STYLES ===== */
:root {
    --primary-color: #4361ee;
    --secondary-color: #3a0ca3;
    --success-color: #4cc9f0;
    --danger-color: #f72585;
    --warning-color: #f8961e;
    --info-color: #7209b7;
    --dark-color: #2b2d42;
    --light-color: #f8f9fa;
    --sidebar-width: 250px;
}

.avatar-iniciais {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #4361ee, #3a0ca3);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
}

/* ===== SIDEBAR PREMIUM ===== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, var(--dark-color) 0%, #1a1b2e 100%);
    padding: 20px 0;
    box-shadow: 3px 0 20px rgba(0,0,0,0.1);
    z-index: 1000;
}

.sidebar-header {
    padding: 0 20px 30px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 20px;
}

.sidebar-header h3 {
    color: white;
    font-size: 18px;
    font-weight: 600;
}

.sidebar-header p {
    color: rgba(255,255,255,0.7);
    font-size: 12px;
}

.sidebar-menu {
    list-style: none;
}

.sidebar-menu li {
    margin-bottom: 5px;
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}

.sidebar-menu a:hover,
.sidebar-menu a.active {
    background: rgba(255,255,255,0.1);
    color: white;
    border-left-color: var(--primary-color);
}

.sidebar-menu i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

/* ===== MAIN CONTENT ===== */
.main-content {
    margin-left: var(--sidebar-width);
    padding: 20px;
    min-height: 100vh;
}

/* ===== HEADER ===== */
.header {
    background: white;
    border-radius: 15px;
    padding: 25px 30px;
    margin-bottom: 30px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-left: 5px solid var(--primary-color);
}

.header h1 {
    color: var(--dark-color);
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 5px;
}

.header p {
    color: #6c757d;
    font-size: 15px;
}

/* ===== STATS CARDS ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    display: flex;
    align-items: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    font-size: 24px;
}

.stat-info h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.stat-info p {
    color: #6c757d;
    font-size: 14px;
}

/* ===== TABLE STYLES ===== */
.alert-box.warning { 
    background: #fff3cd; 
    color: #856404; 
    border: 1px solid #ffeaa7; 
}

.table-container {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    margin-bottom: 30px;
}

.table-header {
    padding: 25px;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.table-header h3 {
    color: var(--dark-color);
    font-size: 20px;
    font-weight: 600;
}

.table-actions {
    display: flex;
    gap: 10px;
}

/* ===== BUTTONS ===== */
.btn {
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #3a56e4);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #3a56e4, var(--primary-color));
    box-shadow: 0 5px 15px rgba(67, 97, 238, 0.4);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #2eb2d3);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color), #e11570);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color), #e68900);
    color: white;
}

.btn-info {
    background: linear-gradient(135deg, var(--info-color), #5a0a9c);
    color: white;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    justify-content: center;
    border-radius: 8px;
}

/* ===== TABLE ===== */
.table {
    width: 100%;
    border-collapse: collapse;
}

.table th {
    background: #f8f9fa;
    padding: 15px 20px;
    text-align: left;
    font-weight: 600;
    color: var(--dark-color);
    border-bottom: 2px solid #eee;
}

.table td {
    padding: 15px 20px;
    border-bottom: 1px solid #eee;
    color: #555;
}

.table tr:hover {
    background: #f8fafc;
}

.status-badge {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.status-confirmada {
    background: rgba(76, 201, 240, 0.1);
    color: var(--success-color);
}

.status-pendente {
    background: rgba(248, 150, 30, 0.1);
    color: var(--warning-color);
}

.status-cancelada {
    background: rgba(247, 37, 133, 0.1);
    color: var(--danger-color);
}

/* ===== MODAL ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1100;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 15px;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.modal-header {
    padding: 25px 30px;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    color: var(--dark-color);
    font-size: 22px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    color: #6c757d;
    cursor: pointer;
    padding: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: #f8f9fa;
    color: var(--danger-color);
}

.modal-body {
    padding: 30px;
}

/* ===== FORM STYLES ===== */
.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

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

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

/* ===== FILTER BAR ===== */
.filter-bar {
    background: white;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 30px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .menu-toggle {
        display: block;
        position: fixed;
        top: 20px;
        left: 20px;
        z-index: 1001;
        background: var(--primary-color);
        color: white;
        border: none;
        width: 40px;
        height: 40px;
        border-radius: 8px;
        font-size: 20px;
        cursor: pointer;
    }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* ===== LOADING ===== */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    color: #6c757d;
}

.loading::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 3px solid #ddd;
    border-top-color: var(--primary-color);
    border-radius: 50%;
    margin-left: 10px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}