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

:root {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d27;
    --bg-card: #1e2235;
    --border: #2d3148;
    --accent-green: #00c851;
    --accent-blue: #4a9eff;
    --accent-red: #ff4d4f;
    --accent-orange: #fa8c16;
    --text-primary: #e8eaf0;
    --text-secondary: #8892a4;
    --text-muted: #4a5568;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

/* ── Login ───────────────────────────────────── */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 48px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.login-logo {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--accent-green);
    letter-spacing: -0.5px;
}

.login-logo p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: 4px;
}

/* ── Forms ───────────────────────────────────── */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 15px;
    transition: border-color 0.2s;
    outline: none;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent-green);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* ── Buttons ─────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
    text-decoration: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--accent-green);
    color: #000;
    width: 100%;
}

.btn-primary:hover { background: #00a843; }

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

.btn-danger:hover { background: #d9363e; }

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover { background: var(--border); }

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

.error-message {
    background: rgba(255,77,79,0.1);
    border: 1px solid var(--accent-red);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--accent-red);
    font-size: 14px;
    margin-bottom: 20px;
    display: none;
}

/* ── Header ──────────────────────────────────── */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 0 32px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent-green);
}

.header-logo span {
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 400;
    margin-left: 8px;
}

.header-user {
    display: flex;
    align-items: center;
    gap: 16px;
    color: var(--text-secondary);
    font-size: 14px;
}

/* ── Layout ──────────────────────────────────── */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 32px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 12px;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

/* ── Badges ──────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-active {
    background: rgba(0,200,81,0.15);
    color: var(--accent-green);
    border: 1px solid rgba(0,200,81,0.3);
}

.badge-complete {
    background: rgba(74,158,255,0.15);
    color: var(--accent-blue);
    border: 1px solid rgba(74,158,255,0.3);
}

.badge-pending {
    background: rgba(250,140,22,0.15);
    color: var(--accent-orange);
    border: 1px solid rgba(250,140,22,0.3);
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

.badge-active .badge-dot {
    animation: pulse 1.5s infinite;
}

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

/* ── Stats Row ───────────────────────────────── */
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.stat-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
}

.stat-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-value.temp-hot  { color: var(--accent-red); }
.stat-value.temp-warm { color: var(--accent-orange); }

/* ── Time Selector ───────────────────────────── */
.time-selector {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.time-btn {
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--border);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    transition: all 0.2s;
    font-family: inherit;
}

.time-btn:hover,
.time-btn.active {
    background: var(--accent-green);
    border-color: var(--accent-green);
    color: #000;
}

/* ── Chart ───────────────────────────────────── */
.chart-container {
    position: relative;
    height: 300px;
    margin-top: 16px;
}

/* ── Weights Row ─────────────────────────────── */
.weights-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
    margin-bottom: 20px;
}

/* ── Table ───────────────────────────────────── */
.table-container { overflow-x: auto; }

table {
    width: 100%;
    border-collapse: collapse;
}

thead tr { border-bottom: 2px solid var(--border); }

th {
    text-align: left;
    padding: 12px 16px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    font-weight: 600;
    white-space: nowrap;
}

tbody tr {
    border-bottom: 1px solid var(--border);
    transition: background 0.15s;
    cursor: pointer;
}

tbody tr:hover { background: var(--bg-secondary); }

tbody tr.selected-row {
    background: rgba(0,200,81,0.05);
    border-left: 3px solid var(--accent-green);
}

td {
    padding: 14px 16px;
    font-size: 14px;
    color: var(--text-primary);
}

/* ── States ──────────────────────────────────── */
.no-data {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

.start-form {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    max-width: 440px;
    margin: 0 auto;
}

.start-form .form-group { margin-bottom: 0; flex: 1; }

/* ── Responsive ──────────────────────────────── */
@media (max-width: 768px) {
    .main-content  { padding: 16px; }
    .header        { padding: 0 16px; }
    .stats-row     { grid-template-columns: repeat(2, 1fr); }
    .weights-row   { grid-template-columns: 1fr; }
}