/* Attending System - Main CSS File */

:root {
    --primary: #6c5ce7;
    --primary-dark: #5f3dc4;
    --secondary: #00b894;
    --accent: #fd79a8;
    --warning: #fdcb6e;
    --danger: #d63031;
    --success: #00b894;
    --info: #74b9ff;
    --dark: #2d3436;
    --light: #dfe6e9;
    --white: #ffffff;
    --bg-light: #f8f9fa;
    --shadow: 0 0 40px rgba(108, 92, 231, 0.1);
    --shadow-sm: 0 2px 10px rgba(0,0,0,0.08);
    --radius: 15px;
    --radius-sm: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Heebo', sans-serif;
    background: var(--bg-light);
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Loading Animation */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.3s;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--light);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(45deg, #fff, #e0d9ff);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    opacity: 0.8;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: white;
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

/* Main Layout */
.main-wrapper {
    display: flex;
    min-height: calc(100vh - 80px);
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: white;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
}

.sidebar-menu {
    padding: 2rem 0;
}

.menu-item {
    display: block;
    padding: 1rem 2rem;
    color: var(--dark);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
    font-weight: 500;
}

.menu-item:hover {
    background: var(--bg-light);
    color: var(--primary);
    padding-right: 2.5rem;
}

.menu-item.active {
    background: linear-gradient(90deg, rgba(108, 92, 231, 0.1) 0%, transparent 100%);
    color: var(--primary);
    border-right: 4px solid var(--primary);
}

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

/* Content Area */
.content {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

/* Dashboard Cards */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: white;
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: -50px;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    opacity: 0.1;
}

.stat-card.primary::before { background: var(--primary); }
.stat-card.success::before { background: var(--success); }
.stat-card.warning::before { background: var(--warning); }
.stat-card.info::before { background: var(--info); }

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.stat-card.primary .stat-icon { background: rgba(108, 92, 231, 0.1); color: var(--primary); }
.stat-card.success .stat-icon { background: rgba(0, 184, 148, 0.1); color: var(--success); }
.stat-card.warning .stat-icon { background: rgba(253, 203, 110, 0.1); color: var(--warning); }
.stat-card.info .stat-icon { background: rgba(116, 185, 255, 0.1); color: var(--info); }

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #666;
    font-size: 0.9rem;
}

/* Forms */
.form-section {
    background: white;
    border-radius: var(--radius);
    padding: 2.5rem;
    box-shadow: var(--shadow-sm);
    margin-bottom: 2rem;
}

.form-header {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--bg-light);
}

.form-header h2 {
    font-size: 1.5rem;
    color: var(--dark);
    margin: 0;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark);
}

.required {
    color: var(--danger);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="date"],
input[type="time"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #e0e0e0;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.1);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(108, 92, 231, 0.3);
}

.btn-success {
    background: linear-gradient(135deg, var(--success) 0%, #00a881 100%);
    color: white;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

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

/* Tables */
.guests-table {
    background: white;
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.search-box {
    position: relative;
    width: 300px;
}

.search-box input {
    padding-right: 2.5rem;
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #666;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    background: var(--bg-light);
    padding: 1rem;
    text-align: right;
    font-weight: 600;
    color: var(--dark);
    border-bottom: 2px solid #e0e0e0;
}

td {
    padding: 1rem;
    border-bottom: 1px solid #f0f0f0;
}

tr:hover {
    background: #fafafa;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.status-confirmed {
    background: rgba(0, 184, 148, 0.1);
    color: var(--success);
}

.status-pending {
    background: rgba(253, 203, 110, 0.1);
    color: var(--warning);
}

.status-declined {
    background: rgba(214, 48, 49, 0.1);
    color: var(--danger);
}

/* Mobile Responsive */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-menu {
        display: none;
    }
    
    .sidebar {
        position: fixed;
        left: -280px;
        top: 0;
        height: 100vh;
        z-index: 1001;
        transition: left 0.3s;
    }
    
    .sidebar.active {
        left: 0;
    }
    
    .main-wrapper {
        flex-direction: column;
    }
    
    .content {
        padding: 1rem;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .search-box {
        width: 100%;
    }
    
    .table-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
}

/* Animations */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #c0c0c0;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a0a0a0;
}

/* Form Floating Labels */
.form-floating {
    position: relative;
    margin-bottom: 1.5rem;
}

.form-floating input {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s;
    background: #fafafa;
}

.form-floating input:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-floating label {
    position: absolute;
    top: 50%;
    right: 1rem;
    transform: translateY(-50%);
    color: #999;
    transition: all 0.3s;
    pointer-events: none;
    background: white;
    padding: 0 0.5rem;
}

.form-floating input:focus + label,
.form-floating input:not(:placeholder-shown) + label {
    top: 0;
    font-size: 0.85rem;
    color: #667eea;
}