/**
 * IWS 2026 - Modern Deep Ocean Theme
 * Clean, elegant, sophisticated dark mode with cyan accents
 */

/* ====== VARIABLES ====== */
:root {
    --primary: #06b6d4;
    --primary-hover: #22d3ee;
    --primary-glow: rgba(6, 182, 212, 0.4);
    --accent: #0891b2;
    --accent-secondary: #14b8a6;
    --success: #10b981;
    --success-light: #34d399;
    --warning: #f59e0b;
    --warning-light: #fbbf24;
    --danger: #f43f5e;
    --danger-light: #fb7185;
    
    --bg: #030712;
    --bg-elevated: #0f172a;
    --bg-secondary: #111827;
    --bg-tertiary: #1f2937;
    --bg-card: #0f172a;
    --bg-hover: #1e293b;
    --bg-active: #334155;
    
    --border: #1e293b;
    --border-light: #374151;
    --border-active: #06b6d4;
    
    --text: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --text-dim: #475569;
    
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.5);
    --shadow: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 30px var(--primary-glow);
    
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition-fast: 0.15s ease;
    --transition: 0.2s ease;
    --transition-slow: 0.3s ease;
}

/* ====== RESET & BASE ====== */
*, *::before, *::after { 
    box-sizing: border-box; 
    margin: 0; 
    padding: 0; 
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Subtle noise texture overlay */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.02;
    pointer-events: none;
    z-index: -1;
}

/* ====== TYPOGRAPHY ====== */
h1 { font-size: 1.5rem; font-weight: 600; letter-spacing: -0.025em; }
h2 { font-size: 1.125rem; font-weight: 600; letter-spacing: -0.02em; }
h3 { font-size: 1rem; font-weight: 500; }
h4 { font-size: 0.875rem; font-weight: 500; }

/* ====== LOGIN MODAL ====== */
#login-modal {
    background: rgba(3, 7, 18, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

/* Glass card effect */
.glass-card {
    background: linear-gradient(
        135deg,
        rgba(15, 23, 42, 0.9) 0%,
        rgba(15, 23, 42, 0.7) 100%
    );
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255,255,255,0.03);
    backdrop-filter: blur(10px);
}

/* ====== BUTTONS ====== */
.zen-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: #fff;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition);
    height: 38px;
    box-shadow: 0 2px 10px var(--primary-glow), inset 0 1px 0 rgba(255,255,255,0.1);
    position: relative;
    overflow: hidden;
}

.zen-button::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition);
}

.zen-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px var(--primary-glow), inset 0 1px 0 rgba(255,255,255,0.15);
}

.zen-button:hover::before {
    opacity: 1;
}

.zen-button:active {
    transform: translateY(0);
}

.zen-button-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
}

.zen-button-secondary {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    box-shadow: none;
}

.zen-button-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--border-light);
    box-shadow: var(--shadow);
}

.zen-button-ghost {
    background: transparent;
    border: 1px solid var(--border);
    box-shadow: none;
}

.zen-button-ghost:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
}

.zen-button-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
    height: 32px;
}

/* ====== INPUTS ====== */
.zen-input {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.5rem 0.875rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
    transition: all var(--transition);
    width: 100%;
    height: 40px;
}

.zen-input::placeholder {
    color: var(--text-dim);
}

.zen-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow), var(--shadow-sm);
    background: var(--bg-secondary);
}

.zen-input:hover:not(:focus) {
    border-color: var(--border-light);
}

/* ====== APP CONTAINER ====== */
#app-container {
    background: var(--bg);
    height: 100vh;
    display: flex;
}

/* ====== SIDEBAR ====== */
aside {
    background: linear-gradient(180deg, var(--bg-elevated) 0%, var(--bg) 100%);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}

.sidebar-logo {
    padding: 1.25rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent-secondary) 100%);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px var(--primary-glow);
}

.zen-sidebar-item {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.625rem 0.875rem;
    margin: 2px 8px;
    border-radius: var(--radius);
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.85rem;
    transition: all var(--transition);
    position: relative;
}

.zen-sidebar-item:hover {
    background: var(--bg-hover);
    color: var(--text-secondary);
}

.zen-sidebar-item.active {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.15) 0%, rgba(20, 184, 166, 0.08) 100%);
    color: var(--primary-hover);
    border: 1px solid rgba(6, 182, 212, 0.25);
}

.zen-sidebar-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 16px;
    background: var(--primary);
    border-radius: 0 2px 2px 0;
}

/* ====== CARDS ====== */
.zen-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.zen-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.zen-card:hover {
    border-color: var(--border-light);
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.zen-stat-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1rem;
    position: relative;
    overflow: hidden;
}

.zen-stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent-secondary));
    opacity: 0;
    transition: opacity var(--transition);
}

.zen-stat-card:hover::after {
    opacity: 1;
}

.zen-stat-card:hover {
    border-color: rgba(6, 182, 212, 0.3);
    box-shadow: var(--shadow-glow);
}

/* ====== BADGES ====== */
.zen-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.zen-badge-success { 
    background: rgba(16, 185, 129, 0.15); 
    color: var(--success-light); 
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.zen-badge-warning { 
    background: rgba(245, 158, 11, 0.15); 
    color: var(--warning-light);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.zen-badge-danger { 
    background: rgba(244, 63, 94, 0.15); 
    color: var(--danger-light);
    border: 1px solid rgba(244, 63, 94, 0.2);
}

.zen-badge-info {
    background: rgba(6, 182, 212, 0.15);
    color: var(--primary-hover);
    border: 1px solid rgba(6, 182, 212, 0.2);
}

/* ====== TABLES ====== */
.zen-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.zen-table th {
    background: linear-gradient(180deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-dim);
    border-bottom: 1px solid var(--border);
}

.zen-table td {
    padding: 0.75rem 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
    transition: all var(--transition-fast);
}

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

.zen-table tbody tr {
    transition: all var(--transition-fast);
}

.zen-table tbody tr:hover {
    background: var(--bg-hover);
}

.zen-table tbody tr:hover td {
    color: var(--text);
}

/* ====== MODALS ====== */
.zen-modal {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg), 0 0 60px rgba(6, 182, 212, 0.1);
    animation: modalIn 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modalIn {
    from { 
        opacity: 0; 
        transform: scale(0.95) translateY(20px); 
    }
    to { 
        opacity: 1; 
        transform: scale(1) translateY(0); 
    }
}

.modal-backdrop {
    background: rgba(3, 7, 18, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

/* ====== TOASTS / NOTIFICATIONS ====== */
.zen-toast {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.75rem 1rem;
    box-shadow: var(--shadow);
    animation: toastIn 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
}

@keyframes toastIn {
    from { 
        opacity: 0; 
        transform: translateX(30px) scale(0.95); 
    }
    to { 
        opacity: 1; 
        transform: translateX(0) scale(1); 
    }
}

.zen-toast-success { 
    border-left: 3px solid var(--success);
    background: linear-gradient(90deg, rgba(16, 185, 129, 0.08) 0%, var(--bg-elevated) 30%);
}

.zen-toast-error { 
    border-left: 3px solid var(--danger);
    background: linear-gradient(90deg, rgba(244, 63, 94, 0.08) 0%, var(--bg-elevated) 30%);
}

.zen-toast-info { 
    border-left: 3px solid var(--primary);
    background: linear-gradient(90deg, rgba(6, 182, 212, 0.08) 0%, var(--bg-elevated) 30%);
}

/* ====== GRADIENTS ====== */
.zen-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent-secondary) 100%);
}

.zen-gradient-text {
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--accent-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.zen-glow {
    box-shadow: 0 0 30px var(--primary-glow);
}

/* ====== SCROLLBAR ====== */
::-webkit-scrollbar { 
    width: 6px; 
    height: 6px; 
}

::-webkit-scrollbar-track { 
    background: transparent; 
}

::-webkit-scrollbar-thumb { 
    background: var(--border-light); 
    border-radius: 3px; 
}

::-webkit-scrollbar-thumb:hover { 
    background: var(--text-dim); 
}

/* ====== FOCUS STATES ====== */
.zen-focus:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--primary);
}

/* ====== EMPTY STATES ====== */
.zen-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 1.5rem;
    text-align: center;
    color: var(--text-muted);
}

.zen-empty-icon {
    width: 64px;
    height: 64px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    color: var(--text-dim);
    font-size: 1.5rem;
}

/* ====== ANIMATIONS ====== */
.zen-fade-in {
    animation: fadeIn var(--transition-slow) ease;
}

.zen-slide-up {
    animation: slideUp var(--transition-slow) ease;
}

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

@keyframes slideUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Pulse animation for status indicators */
.zen-pulse {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Skeleton loading */
.zen-skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-tertiary) 25%,
        var(--bg-hover) 50%,
        var(--bg-tertiary) 75%
    );
    background-size: 200% 100%;
    animation: skeleton 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

@keyframes skeleton {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ====== RESPONSIVE ====== */
@media (max-width: 768px) {
    :root {
        --radius: 8px;
        --radius-lg: 12px;
    }
    
    .zen-sidebar-item { 
        padding: 0.5rem 0.75rem; 
        margin: 1px 4px;
        font-size: 0.8rem;
    }
    
    .zen-button {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }
}

/* ====== UTILITY CLASSES ====== */
.text-gradient { color: var(--primary-hover); }
.border-glow { border-color: var(--primary); box-shadow: 0 0 15px var(--primary-glow); }