@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Outfit:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    /* Base Theme (Admin Default - Slate/Gold) */
    --bg-base: #020617;
    --bg-surface: rgba(15, 23, 42, 0.7);
    --bg-surface-hover: rgba(30, 41, 59, 0.8);
    
    --primary: #f59e0b; /* Amber 500 */
    --primary-glow: rgba(245, 158, 11, 0.3);
    --secondary: #64748b; /* Slate 500 */
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --border-subtle: rgba(255, 255, 255, 0.05);
    --border-highlight: rgba(255, 255, 255, 0.1);
    
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #0ea5e9;

    --font-sans: 'Plus Jakarta Sans', sans-serif;
    --font-heading: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-xl: 32px;
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 12px;
}

/* Technician Theme Override */
.tech-theme {
    --bg-base: #050505;
    --bg-surface: rgba(20, 20, 20, 0.7);
    --bg-surface-hover: rgba(35, 35, 35, 0.8);
    --primary: #2dd4bf; /* Teal 400 */
    --primary-glow: rgba(45, 212, 191, 0.3);
    --secondary: #6366f1; /* Indigo 500 */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-base);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
    position: relative;
}

/* Ambient Background Glow */
.bg-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.bg-glow::before, .bg-glow::after {
    content: '';
    position: absolute;
    width: 60vw;
    height: 60vw;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
}

.bg-glow::before {
    top: -10vw;
    left: -10vw;
    background: var(--primary);
}

.bg-glow::after {
    bottom: -10vw;
    right: -10vw;
    background: var(--secondary);
}

::-webkit-scrollbar { display: none; }

.hidden { display: none !important; }

/* Logs & List Items */
.log-item {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 14px 18px;
    margin-bottom: 8px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: var(--transition);
}

.log-item:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--border-highlight);
}

.log-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.log-time {
    font-size: 11px;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.log-topics {
    font-size: 9px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 3px 8px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.05);
}

.log-message {
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    word-break: break-word;
}

/* Log Levels */
.log-item.error { border-left: 4px solid var(--error); background: rgba(239, 68, 68, 0.05); }
.log-item.error .log-topics { background: rgba(239, 68, 68, 0.15); color: var(--error); }

.log-item.warning { border-left: 4px solid var(--warning); background: rgba(245, 158, 11, 0.05); }
.log-item.warning .log-topics { background: rgba(245, 158, 11, 0.15); color: var(--warning); }

.log-item.critical { border-left: 4px solid #f43f5e; background: rgba(244, 63, 94, 0.1); }
.log-item.critical .log-topics { background: #f43f5e; color: white; }

.log-item.info { border-left: 4px solid var(--info); }
.log-item.info .log-topics { background: rgba(14, 165, 233, 0.1); color: var(--info); }

.log-item.interface .log-topics { color: #38bdf8; }
.log-item.system .log-topics { color: #94a3b8; }
.log-item.pppoe .log-topics { color: #2dd4bf; }

/* Components */
.glass {
    background: var(--bg-surface);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border-subtle);
}

.glass-inset {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-subtle);
}

/* Screens */
.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
    flex-direction: column;
    animation: fadeScaleIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.screen.active { display: flex; }

/* Typography */
h1, h2, h3 { font-family: var(--font-heading); font-weight: 700; letter-spacing: -0.02em; }

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    border: none;
    padding: 16px 24px;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-family: var(--font-heading);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    cursor: pointer;
    box-shadow: 0 10px 20px var(--primary-glow);
    transition: var(--transition);
}

.btn-primary:active { transform: scale(0.96); }

.btn-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
}

.btn-icon:hover { background: var(--bg-surface-hover); border-color: var(--border-highlight); }

/* Inputs */
.input-group { margin-bottom: 24px; width: 100%; }
.input-group label { 
    display: block; 
    font-size: 13px; 
    font-weight: 600; 
    color: var(--text-secondary); 
    margin-bottom: 8px; 
    margin-left: 4px; 
}

.input-wrapper { 
    position: relative; 
    width: 100%; 
    display: flex;
    align-items: center;
}

.input-wrapper i {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    z-index: 10;
}

.input-wrapper input {
    width: 100%;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-subtle);
    padding: 16px 16px 16px 60px;
    border-radius: var(--radius-md);
    color: white;
    font-size: 15px;
    font-family: var(--font-sans);
    transition: var(--transition);
    outline: none;
    display: block;
}

.input-wrapper input:focus {
    border-color: var(--primary);
    background: rgba(0, 0, 0, 0.4);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

/* Header */
.main-header {
    padding: 16px 20px;
    padding-top: calc(16px + env(safe-area-inset-top));
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
}

.header-title h2 { font-size: 20px; }
.header-title span { color: var(--primary); }

/* Scroll Area */
.content-area {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    padding-bottom: calc(100px + env(safe-area-inset-bottom));
}

/* Floating Navigation */
.tab-nav {
    position: fixed;
    bottom: 24px;
    left: 20px;
    right: 20px;
    height: 72px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: space-around;
    padding: 0 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    z-index: 1000;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.nav-item i { width: 22px; height: 22px; }
.nav-item span { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; }

.nav-item.active { color: var(--primary); }
.nav-item.active i { transform: translateY(-2px); }

/* Grid Systems */
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: 1fr 1fr; }

/* Cards */
.card {
    background: var(--bg-surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.card:hover {
    border-color: var(--border-highlight);
    background: var(--bg-surface-hover);
    transform: translateY(-2px);
}

.card:active { transform: scale(0.98); }

/* Premium Device Cards */
.device-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: 28px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.device-card:hover {
    transform: translateY(-8px);
    background: var(--bg-surface-hover);
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3), 0 0 20px var(--primary-glow);
}

.device-card::after {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 120px; height: 120px;
    background: radial-gradient(circle at top right, var(--primary-glow), transparent 70%);
    opacity: 0.3;
}

.device-icon-wrapper {
    width: 60px; height: 60px;
    border-radius: 20px;
    background: rgba(255,255,255,0.05);
    display: flex; align-items: center; justify-content: center;
    color: var(--primary);
    box-shadow: inset 0 0 10px rgba(255,255,255,0.05);
}

.device-status-badge {
    position: absolute; top: 24px; right: 24px;
    display: flex; align-items: center; gap: 6px;
    font-size: 10px; font-weight: 800;
    padding: 6px 12px; border-radius: 20px;
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    text-transform: uppercase;
}

.device-details {
    display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
    padding-top: 16px; border-top: 1px solid var(--border-subtle);
}

.detail-item { display: flex; flex-direction: column; gap: 2px; }
.detail-label { font-size: 9px; color: var(--text-muted); text-transform: uppercase; }
.detail-value { font-size: 12px; font-weight: 600; color: var(--text-secondary); font-family: var(--font-mono); }

/* Animations */
@keyframes fadeScaleIn {
    from { opacity: 0; transform: scale(0.95) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes spin { 100% { transform: rotate(360deg); } }
.spin { animation: spin 1s linear infinite; }

/* Modals */
.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.8); backdrop-filter: blur(8px);
    display: flex; align-items: flex-end; z-index: 2000;
}

.modal-sheet {
    width: 100%;
    background: var(--bg-base);
    border-top: 1px solid var(--border-highlight);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    padding: 24px;
    padding-bottom: calc(24px + env(safe-area-inset-bottom));
}

/* Technician Dashboard Specifics */
.overview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.overview-card {
    padding: 24px;
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: relative;
    overflow: hidden;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
}

.overview-card i { width: 24px; height: 24px; opacity: 0.8; }
.overview-card .count { font-size: 32px; font-weight: 800; font-family: var(--font-heading); }
.overview-card .label { font-size: 11px; font-weight: 700; opacity: 0.6; text-transform: uppercase; letter-spacing: 0.05em; }

/* Diagnostics & Tools */
.diag-container { display: flex; flex-direction: column; gap: 16px; }
.diag-card {
    background: var(--bg-surface); border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg); padding: 24px;
}
.diag-header { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.diag-header i { color: var(--primary); width: 22px; }
.diag-header h3 { font-size: 18px; margin: 0; }

.diag-input-row { display: flex; gap: 10px; margin-bottom: 16px; }
.diag-input-row input {
    flex: 1; background: rgba(0,0,0,0.2); border: 1px solid var(--border-subtle);
    padding: 14px 16px; border-radius: var(--radius-sm); color: #fff; outline: none;
    font-family: var(--font-mono); font-size: 14px;
}

.terminal-box {
    background: #000; border-radius: var(--radius-md); padding: 16px; min-height: 140px;
    font-family: var(--font-mono); font-size: 12px; line-height: 1.6;
    color: var(--success); overflow-y: auto; border: 1px solid rgba(16, 185, 129, 0.1);
}

.gauge-section { display: flex; flex-direction: column; align-items: center; gap: 24px; padding: 20px 0; }
.speed-gauge {
    width: 160px; height: 160px; border-radius: 50%; border: 8px solid var(--bg-surface-hover);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    position: relative; box-shadow: 0 0 40px var(--primary-glow);
}
.speed-gauge .val { font-size: 36px; font-weight: 800; color: var(--primary); font-family: var(--font-heading); }
.speed-gauge .unit { font-size: 12px; color: var(--text-muted); text-transform: uppercase; font-weight: 800; }

/* Welcome Section */
.welcome-section { margin-bottom: 28px; }
.welcome-section h1 { font-size: 28px; margin-bottom: 6px; }
.welcome-section p { color: var(--text-secondary); font-size: 15px; }

/* Status Badge */
.router-status { display: flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 800; color: var(--success); text-transform: uppercase; }
.pulse-dot { width: 8px; height: 8px; background: var(--success); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.4; transform: scale(0.8); } }

/* App Dock */
.bottom-horizontal-menu {
    position: fixed; bottom: 24px; left: 20px; right: 20px;
    height: 72px; border-radius: var(--radius-xl);
    display: flex; align-items: center; justify-content: space-around;
    padding: 0 12px; box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    z-index: 1000; animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.horizontal-item {
    display: flex; flex-direction: column; align-items: center; gap: 4px;
    color: var(--text-secondary); background: none; border: none;
    cursor: pointer; transition: var(--transition); flex: 1;
}
.horizontal-item i { width: 22px; height: 22px; }
.horizontal-item span { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; }
.horizontal-item.active { color: var(--primary); }

@keyframes slideUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}