:root {
    /* Color Palette */
    --bg-color: #0f172a; /* Slate 900 */
    --bg-accent: #1e293b; /* Slate 800 */
    --text-primary: #f8fafc; /* Slate 50 */
    --text-secondary: #94a3b8; /* Slate 400 */
    --primary: #3b82f6; /* Blue 500 */
    --primary-hover: #2563eb; /* Blue 600 */
    --error: #ef4444; /* Red 500 */
    
    /* Glassmorphism Tokens */
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    
    /* Dynamic Background Gradient */
    background: radial-gradient(circle at 15% 50%, rgba(59, 130, 246, 0.15), transparent 25%),
                radial-gradient(circle at 85% 30%, rgba(139, 92, 246, 0.15), transparent 25%);
    background-color: var(--bg-color);
}

#app-root {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    width: 100%;
}

/* Glassmorphism Container */
.glass-container {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    box-shadow: var(--glass-shadow);
    padding: 40px;
    width: 100%;
    max-width: 400px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.4);
}

/* Typography */
h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    text-align: center;
    background: linear-gradient(135deg, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

p.subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 32px;
}

/* Forms */
.input-group {
    margin-bottom: 20px;
    position: relative;
}

.input-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.input-group input {
    width: 100%;
    padding: 12px 16px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 15px;
    font-family: inherit;
    outline: none;
    transition: all 0.3s ease;
}

.input-group input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* Buttons */
.btn-primary {
    width: 100%;
    padding: 14px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 10px;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: scale(1.02);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Errors and Loading */
.error-message {
    color: var(--error);
    font-size: 13px;
    margin-top: 8px;
    text-align: center;
    min-height: 20px;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.4s ease forwards;
}

/* Dashboard Layout */
.app-layout {
    display: flex;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    position: absolute;
    top: 0;
    left: 0;
}

.sidebar {
    width: 260px;
    height: 100%;
    background: var(--glass-bg);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    padding: 24px;
}

.sidebar-header {
    margin-bottom: 40px;
}

.sidebar-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: transparent;
    border: none;
    border-radius: 12px;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
}

.nav-btn svg {
    width: 20px;
    height: 20px;
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.nav-btn.active {
    background: rgba(59, 130, 246, 0.15);
    color: var(--primary);
}

.sidebar-footer {
    margin-top: auto;
    padding-top: 24px;
    border-top: 1px solid var(--glass-border);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: white;
}

.btn-small {
    padding: 8px 16px;
    font-size: 13px;
    border-radius: 8px;
}

.main-content {
    flex: 1;
    height: 100%;
    overflow-y: auto;
    padding: 40px;
}

.view-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 30px;
}

.view-header h2 {
    font-size: 28px;
    font-weight: 600;
}

.glass-container-flat {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 24px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 20px;
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon svg {
    width: 28px;
    height: 28px;
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat-trend {
    font-size: 12px;
    font-weight: 500;
}

.stat-trend.positive { color: #10b981; }
.stat-trend.neutral { color: var(--text-secondary); }
.stat-trend.negative { color: var(--error); }

/* Activity List */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.activity-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.activity-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.activity-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-top: 5px;
}

.activity-dot.new-booking { background: #3b82f6; box-shadow: 0 0 10px rgba(59, 130, 246, 0.5); }
.activity-dot.check-in { background: #10b981; box-shadow: 0 0 10px rgba(16, 185, 129, 0.5); }
.activity-dot.payment { background: #8b5cf6; box-shadow: 0 0 10px rgba(139, 92, 246, 0.5); }

.activity-content p {
    font-size: 14px;
    line-height: 1.5;
}

.activity-content .time {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
    display: block;
}

/* Properties List */
.properties-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.property-card {
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.property-image {
    width: 100%;
    height: 180px;
    background-size: cover;
    background-position: center;
}

.property-info {
    padding: 20px;
}

.property-info h3 {
    font-size: 18px;
    margin-bottom: 4px;
}

.property-info p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.status-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-badge.occupied { background: rgba(59, 130, 246, 0.2); color: #3b82f6; }
.status-badge.available { background: rgba(16, 185, 129, 0.2); color: #10b981; }
.status-badge.maintenance { background: rgba(239, 68, 68, 0.2); color: #ef4444; }