@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    /* --- PALETTE: DEEP DARK --- */
    --bg-layer-0: #000000;
    --bg-layer-1: #0a0a0a;
    --bg-layer-2: #111111;
    --bg-layer-3: #1a1a1a;

    --border-subtle: #222;
    --border-highlight: #333;

    /* --- TEXT --- */
    --text-primary: #f0f0f0;
    --text-secondary: #888888;
    --text-tertiary: #555555;

    /* --- ACCENTS --- */
    --accent-primary: #ffffff;
    /* Stark white as accent */
    --accent-glow: rgba(255, 255, 255, 0.15);

    --success: #00f090;
    --danger: #ff3333;
    --warning: #ffb700;

    /* --- STACK EFFECTS --- */
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    --stack-border: 1px solid #1a1a1a;
}

body {
    font-family: 'Outfit', sans-serif;
    background: var(--bg-layer-0);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px;
}

/* --- TOP NAV BAR --- */
.top-bar {
    position: sticky;
    top: 20px;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    margin: 0 20px 30px 20px;
    padding: 0 20px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.nav-tabs {
    display: flex;
    gap: 8px;
    height: 100%;
    align-items: center;
}

.nav-tab {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 8px 16px;
    font-weight: 500;
    font-size: 13px;
    cursor: pointer;
    border-radius: 8px;
    transition: 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-tab:hover {
    color: var(--text-primary);
    background: var(--bg-layer-2);
}

.nav-tab.active {
    color: var(--bg-layer-0);
    background: var(--accent-primary);
    font-weight: 700;
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
}

/* --- CARD STACK UI --- */
.tab-content {
    display: none;
    animation: slideUp 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.98);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.panel {
    background: var(--bg-layer-1);
    border: var(--stack-border);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 30px;
    position: relative;
    box-shadow: var(--card-shadow);
}

/* "Stack" Effect with pseudo-elements */
.panel::after {
    content: '';
    position: absolute;
    top: 5px;
    left: 10px;
    right: 10px;
    bottom: -5px;
    background: var(--bg-layer-2);
    z-index: -1;
    border-radius: 20px;
    opacity: 0.5;
    border: 1px solid var(--border-subtle);
}

.panel::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 20px;
    right: 20px;
    bottom: -10px;
    background: var(--bg-layer-3);
    z-index: -2;
    border-radius: 20px;
    opacity: 0.3;
    border: 1px solid var(--border-subtle);
}

/* --- FORMS --- */
.form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 25px;
    align-items: flex-end;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

label {
    font-size: 10px;
    font-weight: 700;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

input,
select,
textarea {
    background: var(--bg-layer-0);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    padding: 14px 16px;
    border-radius: 12px;
    font-size: 13px;
    outline: none;
    transition: 0.2s;
    font-family: 'JetBrains Mono', monospace;
}

/* Modern Date Picker */
input[type="date"] {
    position: relative;
    padding-right: 10px;
    color-scheme: dark;
    /* Hints browser to use dark controls */
}

input[type="date"]::-webkit-calendar-picker-indicator {
    background-color: transparent;
    padding: 5px;
    cursor: pointer;
    border-radius: 3px;
    filter: invert(1);
    /* White icon */
    opacity: 0.7;
}

input[type="date"]::-webkit-calendar-picker-indicator:hover {
    background-color: rgba(255, 255, 255, 0.1);
    opacity: 1;
}

input:focus,
textarea:focus,
select:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px var(--bg-layer-3);
}

textarea {
    min-height: 120px;
    resize: vertical;
    line-height: 1.5;
}

/* --- BUTTONS --- */
.btn {
    padding: 14px 24px;
    border: none;
    border-radius: 12px;
    font-weight: 700;
    font-size: 11px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--bg-layer-0);
    transition: 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--accent-primary);
    color: #000;
}

.btn-primary:hover {
    background: #dddddd;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.2);
}

.btn-success {
    background: var(--success);
    color: #000;
}

.btn-success:hover {
    box-shadow: 0 5px 15px rgba(0, 240, 144, 0.3);
}

.btn-danger {
    background: var(--danger);
    color: #fff;
}

.btn-danger:hover {
    box-shadow: 0 5px 15px rgba(255, 51, 51, 0.3);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
}

.btn-outline:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
}

/* --- TABLE (Floating Rows) --- */
table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 10px;
    table-layout: fixed;
    /* Ensures columns respect widths and don't expand indefinitely */
}

th {
    text-align: left;
    color: var(--text-tertiary);
    font-size: 10px;
    padding: 0 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding-bottom: 5px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

tbody tr {
    transition: 0.2s;
}

tbody tr:hover {
    transform: scale(1.005);
}

td {
    background: var(--bg-layer-2);
    padding: 16px 20px;
    border: 1px solid var(--border-subtle);
    border-style: solid none;
    vertical-align: middle;
}

td:first-child {
    border-left: 1px solid var(--border-subtle);
    border-radius: 12px 0 0 12px;
}

td:last-child {
    border-right: 1px solid var(--border-subtle);
    border-radius: 0 12px 12px 0;
}

/* Scrollable Sensor Data Box */
.sensor-data-box {
    height: 60px;
    overflow-y: auto;
    font-size: 10px;
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-secondary);
    word-break: break-all;
    white-space: pre-wrap;
    background: rgba(0, 0, 0, 0.2);
    padding: 5px;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.sensor-data-box::-webkit-scrollbar {
    width: 4px;
}

.sensor-data-box::-webkit-scrollbar-thumb {
    background: var(--border-subtle);
    border-radius: 2px;
}


/* --- LOGS UI --- */
.log-box {
    background: #000;
    border: 1px solid var(--border-subtle);
    padding: 20px;
    border-radius: 12px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--success);
    height: 220px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-all;
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.8);
}

.log-box::-webkit-scrollbar {
    width: 8px;
}

.log-box::-webkit-scrollbar-thumb {
    background: var(--border-highlight);
    border-radius: 4px;
}

/* --- STATUS & BADGES --- */
.status-pill {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 9px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.s-new {
    background: var(--bg-layer-3);
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
}

.s-used {
    background: rgba(0, 240, 144, 0.1);
    color: var(--success);
    border: 1px solid rgba(0, 240, 144, 0.3);
}

.counter-badge {
    background: var(--bg-layer-3);
    color: var(--accent-primary);
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 600;
    border: 1px solid var(--border-subtle);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}

/* --- UTILS --- */
.view-mode-toggle {
    display: flex;
    gap: 5px;
    margin-bottom: 10px;
    justify-content: flex-end;
}

.view-btn {
    background: var(--bg-layer-2);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    padding: 4px 10px;
    font-size: 10px;
    cursor: pointer;
    border-radius: 6px;
}

.view-btn.active {
    background: var(--text-primary);
    color: #000;
}

.btn-clear-date {
    background: var(--bg-layer-3);
    color: var(--text-primary);
    border: 1px solid var(--border-highlight);
    padding: 13px;
    border-radius: 12px;
    aspect-ratio: 1;
    /* Square */
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 45px;
}

.btn-clear-date:hover {
    background: var(--danger);
    color: #fff;
    border-color: var(--danger);
}

/* --- LOGIN PAGE SPECIAL --- */
.login-body {
    background: var(--bg-layer-0);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
}

.login-card {
    background: var(--bg-layer-1);
    padding: 50px;
    border-radius: 24px;
    border: 1px solid var(--border-subtle);
    width: 100%;
    max-width: 380px;
    text-align: center;
    position: relative;
    /* Stack effect for login too */
    box-shadow:
        0 20px 50px rgba(0, 0, 0, 0.8),
        0 0 0 1px var(--border-subtle);
}

.login-card::after {
    content: '';
    position: absolute;
    top: 10px;
    left: 15px;
    right: 15px;
    bottom: -10px;
    background: var(--bg-layer-2);
    z-index: -1;
    border-radius: 24px;
    opacity: 0.6;
    border: 1px solid var(--border-subtle);
}

.login-h2 {
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 30px;
    font-size: 24px;
    background: -webkit-linear-gradient(45deg, #fff, #888);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.login-input {
    margin-bottom: 15px;
    width: 100%;
    box-sizing: border-box;
    background: var(--bg-layer-0);
}

.login-btn {
    width: 100%;
    margin-top: 10px;
    padding: 16px;
    font-size: 12px;
}

.error {
    color: var(--danger);
    background: rgba(255, 51, 51, 0.1);
    padding: 10px;
    border-radius: 8px;
    font-size: 12px;
    margin-bottom: 20px;
    display: block;
    border: 1px solid rgba(255, 51, 51, 0.2);
}