/* ============================================
   CHRONOS VAULT v2.0 - BLUE NEON EDITION
   Milky white + Blue neon aesthetic
   ============================================ */

:root {
    --bg-primary: #f0f2f8;
    --bg-secondary: #e8ecf4;
    --bg-panel: #ffffff;
    --bg-input: #f5f7fc;
    --border-light: #d0d8e8;
    --border-accent: #4a90d9;
    --border-glow: #6db3f2;
    --text-primary: #1a2a40;
    --text-secondary: #3a5070;
    --text-dim: #8899b4;
    --text-accent: #2b6cb0;
    --text-danger: #d04444;
    --text-warning: #c07830;
    --text-success: #3a8a5c;
    --neon-blue: #4a90d9;
    --neon-cyan: #5bb8f0;
    --neon-glow: 0 0 15px rgba(74, 144, 217, 0.4);
    --neon-glow-strong: 0 0 25px rgba(74, 144, 217, 0.6);
    --neon-glow-cyan: 0 0 15px rgba(91, 184, 240, 0.5);
    --shadow-panel: 0 2px 12px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 4px 20px rgba(74, 144, 217, 0.15);
    --font-mono: 'Courier New', 'Fira Code', 'JetBrains Mono', monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --radius: 8px;
    --radius-sm: 4px;
    --transition: all 0.2s ease;
}

/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 15px;
    scroll-behavior: smooth;
}

body {
    background: var(--bg-primary);
    background-image:
        radial-gradient(ellipse at 20% 20%, rgba(74, 144, 217, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(91, 184, 240, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(200, 210, 230, 0.3) 0%, transparent 70%);
    color: var(--text-primary);
    font-family: var(--font-sans);
    min-height: 100vh;
    position: relative;
    padding-bottom: 40px;
}

/* Subtle scanlines */
.scanlines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.015) 0px,
        rgba(0, 0, 0, 0.015) 1px,
        transparent 1px,
        transparent 3px
    );
    pointer-events: none;
    z-index: 9999;
}

/* Animations */
@keyframes glitch {
    0%, 100% { text-shadow: 1px 0 var(--neon-cyan), -1px 0 var(--neon-blue); }
    25% { text-shadow: -1px 0 var(--neon-cyan), 1px 0 var(--neon-blue); }
    50% { text-shadow: 1px 1px var(--neon-cyan), -1px -1px var(--neon-blue); }
    75% { text-shadow: -1px 1px var(--neon-cyan), 1px -1px var(--neon-blue); }
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

@keyframes borderPulse {
    0%, 100% { border-color: var(--border-light); }
    50% { border-color: var(--border-accent); }
}

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

.glitch {
    animation: glitch 4s infinite;
}

.blink {
    animation: blink 1.2s step-end infinite;
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* ========== HEADER ========== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 28px;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-panel);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left h1 {
    font-size: 1.6rem;
    letter-spacing: 3px;
    color: var(--text-accent);
    font-family: var(--font-mono);
    text-shadow: var(--neon-glow);
}

.subtitle {
    font-size: 0.65rem;
    color: var(--text-dim);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.header-center {
    text-align: center;
}

.live-clock {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 3px;
}

.live-date {
    font-size: 0.7rem;
    color: var(--text-dim);
    letter-spacing: 1px;
}

.status-indicators {
    display: flex;
    gap: 14px;
}

.status {
    font-size: 0.7rem;
    padding: 4px 10px;
    border-radius: 20px;
    font-weight: 600;
    letter-spacing: 0.5px;
    font-family: var(--font-mono);
}

.status.online {
    background: #e8f4e8;
    color: var(--text-success);
}

.status.idle {
    background: #f0f0f0;
    color: var(--text-dim);
}

.status.warning {
    background: #fef3e4;
    color: var(--text-warning);
}

.status.critical {
    background: #fce8e8;
    color: var(--text-danger);
    animation: pulse 1s ease-in-out infinite;
}

/* ========== TAB NAVIGATION ========== */
.tab-nav {
    display: flex;
    gap: 4px;
    padding: 12px 20px;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border-light);
    overflow-x: auto;
    position: sticky;
    top: 72px;
    z-index: 99;
    flex-wrap: wrap;
}

.tab-btn {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    padding: 10px 18px;
    border: 1px solid var(--border-light);
    background: var(--bg-input);
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 6px;
    transition: var(--transition);
    white-space: nowrap;
    letter-spacing: 0.5px;
}

.tab-btn:hover {
    border-color: var(--border-accent);
    color: var(--text-accent);
    box-shadow: var(--neon-glow);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-cyan));
    color: #fff;
    border-color: transparent;
    font-weight: 700;
    box-shadow: var(--neon-glow-strong);
}

/* ========== TAB CONTENT ========== */
.tab-content-wrapper {
    max-width: 1100px;
    margin: 20px auto;
    padding: 0 20px;
}

.tab-content {
    display: none;
    animation: slideIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

/* ========== GRIDS ========== */
.dashboard-grid-double {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

@media (max-width: 768px) {
    .dashboard-grid-double {
        grid-template-columns: 1fr;
    }
    .header {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
    .tab-nav {
        justify-content: center;
    }
}

/* ========== PANELS ========== */
.panel {
    background: var(--bg-panel);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow-panel);
    transition: var(--transition);
    animation: borderPulse 6s ease-in-out infinite;
}

.panel:hover {
    box-shadow: var(--shadow-hover);
}

.panel-accent {
    border-left: 3px solid var(--border-accent);
}

.panel-full {
    max-width: 500px;
    margin: 0 auto;
}

.panel-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-light);
}

.panel-header h2 {
    font-size: 0.8rem;
    font-family: var(--font-mono);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-secondary);
    flex: 1;
}

.panel-icon {
    font-size: 1.1rem;
}

.panel-badge {
    font-size: 0.6rem;
    padding: 3px 10px;
    border-radius: 20px;
    background: var(--bg-input);
    color: var(--text-accent);
    font-family: var(--font-mono);
    letter-spacing: 1px;
    font-weight: 600;
}

.panel-body {
    display: flex;
    flex-direction: column;
}

/* ========== CLOCK PANEL ========== */
.clock-panel-body {
    align-items: center;
}

.clock-large {
    font-family: var(--font-mono);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 6px;
    text-shadow: var(--neon-glow);
}

.date-large {
    font-size: 0.9rem;
    color: var(--text-dim);
    letter-spacing: 2px;
    margin-top: 4px;
}

/* ========== COUNTDOWN ========== */
.countdown-mini {
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-accent);
    text-align: center;
    letter-spacing: 2px;
}

.countdown-label-sm {
    text-align: center;
    font-size: 0.7rem;
    color: var(--text-dim);
    margin-top: 6px;
}

.countdown-label {
    font-size: 0.75rem;
    color: var(--text-warning);
    text-align: center;
    margin-bottom: 10px;
    font-family: var(--font-mono);
}

.countdown-full {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    margin-bottom: 14px;
}

.cd-unit {
    text-align: center;
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    padding: 10px 6px;
    border-radius: var(--radius-sm);
    min-width: 62px;
}

.cd-unit span {
    font-size: 1.8rem;
    font-weight: 700;
    display: block;
    color: var(--text-accent);
    font-family: var(--font-mono);
}

.cd-unit label {
    font-size: 0.55rem;
    color: var(--text-dim);
    letter-spacing: 2px;
}

.cd-sep {
    font-size: 1.4rem;
    color: var(--text-dim);
    animation: blink 1s step-end infinite;
}

/* ========== TIMER ========== */
.timer-mini-body {
    align-items: center;
}

.timer-mini-display {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 4px;
}

.timer-mini-controls {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.timer-full-display {
    font-family: var(--font-mono);
    font-size: 4rem;
    text-align: center;
    font-weight: 700;
    letter-spacing: 6px;
    color: var(--text-primary);
    text-shadow: var(--neon-glow);
    margin-bottom: 12px;
}

.timer-controls {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 12px;
}

.timer-settings {
    display: flex;
    gap: 16px;
    justify-content: center;
    font-size: 0.7rem;
    color: var(--text-dim);
    margin-bottom: 8px;
}

.timer-settings input {
    width: 50px;
    font-family: var(--font-mono);
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    color: var(--text-primary);
    padding: 4px 8px;
    text-align: center;
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
}

.timer-cycles {
    text-align: center;
    font-size: 0.7rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    letter-spacing: 1px;
}

/* ========== STATS MINI ========== */
.stats-mini {
    gap: 8px;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    padding: 6px 0;
    border-bottom: 1px solid rgba(0,0,0,0.04);
    font-family: var(--font-mono);
}

.stat-row span:first-child {
    color: var(--text-dim);
}

.stat-row span:last-child {
    color: var(--text-primary);
    font-weight: 600;
}

/* ========== BUTTONS ========== */
.btn {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    padding: 9px 18px;
    border: 1px solid var(--border-light);
    background: var(--bg-panel);
    color: var(--text-secondary);
    cursor: pointer;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: var(--transition);
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.btn:hover {
    box-shadow: var(--neon-glow);
    border-color: var(--border-accent);
    color: var(--text-accent);
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: linear-gradient(135deg, var(--neon-blue), #3a7bc8);
    color: #fff;
    border-color: transparent;
}

.btn-primary:hover {
    box-shadow: var(--neon-glow-strong);
    color: #fff;
}

.btn-warning {
    border-color: var(--text-warning);
    color: var(--text-warning);
}

.btn-danger {
    border-color: var(--text-danger);
    color: var(--text-danger);
}

.btn-sm {
    padding: 5px 12px;
    font-size: 0.65rem;
}

.btn-full {
    width: 100%;
    margin-top: 8px;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

/* ========== TERMINAL INPUT ========== */
.terminal-input {
    font-family: var(--font-mono);
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    color: var(--text-primary);
    padding: 10px 14px;
    font-size: 0.8rem;
    width: 100%;
    border-radius: var(--radius-sm);
    outline: none;
    transition: var(--transition);
}

.terminal-input:focus {
    border-color: var(--border-accent);
    box-shadow: var(--neon-glow);
    background: #fff;
}

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

/* ========== CALCULATOR ========== */
.calc-body {
    align-items: center;
}

.calc-display {
    font-family: var(--font-mono);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-primary);
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    text-align: right;
    width: 100%;
    margin-bottom: 16px;
    min-height: 64px;
    word-break: break-all;
    letter-spacing: 2px;
}

.calc-keypad {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    width: 100%;
    max-width: 340px;
}

.calc-btn {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    padding: 16px;
    border: 1px solid var(--border-light);
    background: var(--bg-panel);
    color: var(--text-primary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    font-weight: 600;
}

.calc-btn:hover {
    background: var(--bg-input);
    border-color: var(--border-accent);
    box-shadow: var(--neon-glow);
}

.calc-btn:active {
    transform: scale(0.95);
    background: #e8ecf4;
}

.calc-num {
    background: #fff;
    font-weight: 700;
}

.calc-op {
    background: #eaf2fb;
    color: var(--text-accent);
    font-weight: 700;
}

.calc-func {
    background: #f0f0f0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.calc-eq {
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-cyan));
    color: #fff;
    font-weight: 700;
    font-size: 1.3rem;
}

.calc-eq:hover {
    box-shadow: var(--neon-glow-strong);
    color: #fff;
}

.calc-zero {
    grid-column: span 2;
}

/* ========== SUBNET TOOL ========== */
.subnet-body {
    gap: 16px;
}

.subnet-inputs {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.input-group label {
    font-size: 0.7rem;
    color: var(--text-dim);
    display: block;
    margin-bottom: 4px;
    font-family: var(--font-mono);
    letter-spacing: 1px;
}

.subnet-results {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.result-card {
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    padding: 12px;
    border-radius: var(--radius-sm);
}

.result-card span {
    font-size: 0.6rem;
    color: var(--text-dim);
    display: block;
    margin-bottom: 4px;
    font-family: var(--font-mono);
    letter-spacing: 1px;
}

.result-card strong {
    font-size: 0.85rem;
    color: var(--text-primary);
    font-family: var(--font-mono);
    word-break: break-all;
}

/* ========== TASKS ========== */
.tasks-body {
    gap: 12px;
}

.task-input-row {
    display: flex;
    gap: 8px;
}

.task-input-row .terminal-input {
    flex: 1;
}

.task-list {
    list-style: none;
    max-height: 350px;
    overflow-y: auto;
}

.task-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-bottom: 1px solid rgba(0,0,0,0.04);
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
    border-radius: var(--radius-sm);
}

.task-list li:hover {
    background: var(--bg-input);
}

.task-list li.completed .task-text {
    text-decoration: line-through;
    color: var(--text-dim);
}

.task-checkbox {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-light);
    cursor: pointer;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    border-radius: 50%;
    transition: var(--transition);
}

.task-checkbox.checked {
    border-color: var(--neon-blue);
    background: var(--neon-blue);
    color: #fff;
}

.task-text {
    flex: 1;
    word-break: break-word;
}

.task-delete {
    color: var(--text-danger);
    cursor: pointer;
    padding: 4px 8px;
    font-size: 0.7rem;
    background: none;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.task-delete:hover {
    border-color: var(--text-danger);
    background: #fce8e8;
}

/* ========== CHEAT SHEET ========== */
.cheat-body {
    max-height: 400px;
    overflow-y: auto;
}

.cheat-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
    font-size: 0.7rem;
}

.cheat-table th {
    text-align: left;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-dim);
    letter-spacing: 1px;
    position: sticky;
    top: 0;
    background: var(--bg-panel);
    font-size: 0.65rem;
}

.cheat-table td {
    padding: 6px 12px;
    border-bottom: 1px solid rgba(0,0,0,0.04);
    color: var(--text-secondary);
}

.cheat-table tr:hover td {
    background: var(--bg-input);
}

/* ========== STATS DETAIL ========== */
.stats-detail {
    gap: 10px;
}

.stat-card {
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    padding: 14px;
    border-radius: var(--radius-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stat-card label {
    font-size: 0.7rem;
    color: var(--text-dim);
    font-family: var(--font-mono);
    letter-spacing: 1px;
}

.stat-card span {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-accent);
    font-family: var(--font-mono);
}

/* ========== FOOTER ========== */
.footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 28px;
    border-top: 1px solid var(--border-light);
    background: var(--bg-panel);
    font-size: 0.62rem;
    color: var(--text-dim);
    font-family: var(--font-mono);
    position: fixed;
    bottom: 0;
    width: 100%;
    z-index: 100;
}

.footer-center {
    color: var(--text-accent);
    letter-spacing: 1px;
}

/* ========== NOTIFICATION OVERLAY ========== */
.notification-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 25, 45, 0.8);
    backdrop-filter: blur(4px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.notification-overlay.hidden {
    display: none;
}

.notification-box {
    background: var(--bg-panel);
    border: 2px solid var(--border-accent);
    box-shadow: var(--neon-glow-strong);
    padding: 30px 36px;
    text-align: center;
    border-radius: var(--radius);
    max-width: 420px;
    animation: borderPulse 0.8s ease-in-out infinite;
}

.notification-icon {
    font-size: 2.5rem;
    margin-bottom: 8px;
}

.notification-title {
    font-family: var(--font-mono);
    font-size: 1.3rem;
    color: var(--text-accent);
    letter-spacing: 2px;
    margin-bottom: 8px;
    font-weight: 700;
}

.notification-message {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 18px;
    line-height: 1.4;
}

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar {
    width: 5px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-accent);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 600px) {
    .clock-large { font-size: 2.5rem; }
    .timer-full-display { font-size: 3rem; }
    .calc-display { font-size: 1.6rem; }
    .subnet-results { grid-template-columns: 1fr; }
    .tab-btn { font-size: 0.65rem; padding: 8px 12px; }
}