/* ═══════════════════════════════════════════════════════════════
   Tomato Irrigation v3.1 — Commercial Design System
   ═══════════════════════════════════════════════════════════════ */

/* ── CSS Variables ─────────────────────────────────────────── */
:root {
    --bg-primary: #0a0f1e;
    --bg-secondary: #111827;
    --bg-card: rgba(17, 24, 39, 0.7);
    --bg-glass: rgba(255, 255, 255, 0.04);
    --border: rgba(255, 255, 255, 0.08);
    --border-focus: rgba(16, 185, 129, 0.5);

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-dim: #64748b;

    --accent: #10b981;
    --accent-bg: rgba(16, 185, 129, 0.12);
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;

    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;

    --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);

    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);

    font-family: 'Inter', -apple-system, system-ui, sans-serif;
    font-size: 15px;
    color: var(--text-primary);
    background: var(--bg-primary);
}

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

body {
    min-height: 100dvh;
    background: var(--bg-primary);
    overscroll-behavior: none;
    -webkit-tap-highlight-color: transparent;
}

.hidden {
    display: none !important;
}

.dim {
    color: var(--text-dim);
    font-size: 0.85em;
}

.mt-2 {
    margin-top: 0.5rem;
}

.mt-3 {
    margin-top: 1rem;
}


/* ═══ AUTH SCREEN ═══════════════════════════════════════════ */

.auth-screen {
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background: linear-gradient(160deg, #064e3b 0%, #0a0f1e 40%, #1e1b4b 100%);
}

.auth-container {
    width: 100%;
    max-width: 380px;
    text-align: center;
}

.auth-logo img {
    border-radius: 20px;
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 20px rgba(16, 185, 129, 0.3));
}

.auth-logo h1 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.auth-switch {
    color: var(--text-dim);
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

.auth-switch a {
    color: var(--accent);
    cursor: pointer;
    text-decoration: none;
    font-weight: 500;
}

.auth-error {
    color: var(--danger);
    font-size: 0.85rem;
    min-height: 1.2em;
    margin-top: 0.5rem;
}

.auth-credit {
    color: var(--text-dim);
    font-size: 0.75rem;
    margin-top: 2rem;
    opacity: 0.5;
}


/* ═══ INPUTS & BUTTONS ═════════════════════════════════════ */

.input {
    width: 100%;
    padding: 0.7rem 1rem;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font: inherit;
    font-size: 0.95rem;
    outline: none;
    transition: border var(--transition);
}

.input:focus {
    border-color: var(--border-focus);
}

.input-sm {
    max-width: 100px;
    padding: 0.5rem 0.7rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.7rem 1.5rem;
    font: inherit;
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
}

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

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

.btn-primary:hover {
    background: #0d9668;
}

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.3);
    font-weight: 700;
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.25);
}

.btn-full {
    width: 100%;
}

.btn-icon {
    background: none;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
    transition: all var(--transition);
}

.btn-icon:hover {
    color: var(--text-primary);
    background: var(--bg-glass);
}


/* ═══ HEADER ═══════════════════════════════════════════════ */

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.25rem;
    padding-top: calc(0.75rem + var(--safe-top));
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.header-icon {
    border-radius: 6px;
}

.header-title {
    font-size: 1.1rem;
    font-weight: 700;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-ago {
    font-size: 0.75rem;
    color: var(--text-dim);
}


/* ═══ BADGES ═══════════════════════════════════════════════ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.badge-online {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
    animation: pulse-green 2s infinite;
}

.badge-offline {
    background: rgba(239, 68, 68, 0.12);
    color: #f87171;
}

.badge-mode {
    background: var(--accent-bg);
    color: var(--accent);
}

@keyframes pulse-green {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
    }

    50% {
        box-shadow: 0 0 0 6px rgba(16, 185, 129, 0);
    }
}


/* ═══ ADMIN ACTION BUTTONS ════════════════════════════════ */

.abtn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.2rem 0.5rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8em;
    line-height: 1.2;
    transition: all var(--transition);
}

.abtn:active {
    transform: scale(0.93);
}

.abtn-blue {
    background: #3b82f6;
    color: #fff;
}

.abtn-blue:hover {
    background: #2563eb;
}

.abtn-red {
    background: #ef4444;
    color: #fff;
}

.abtn-red:hover {
    background: #dc2626;
}

.abtn-green {
    background: #10b981;
    color: #fff;
}

.abtn-green:hover {
    background: #059669;
}

.abtn-yellow {
    background: #f59e0b;
    color: #000;
}

.abtn-yellow:hover {
    background: #d97706;
}


/* ═══ TAB BAR ══════════════════════════════════════════════ */

.tab-bar {
    display: flex;
    gap: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
}

.tab-bar::-webkit-scrollbar {
    display: none;
}

.tab {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 10px 4px;
    font: inherit;
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-dim);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.tab svg {
    opacity: 0.5;
    transition: opacity var(--transition);
}

.tab:hover {
    color: var(--text-secondary);
}

.tab:hover svg {
    opacity: 0.7;
}

.tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.tab.active svg {
    opacity: 1;
    stroke: var(--accent);
}


/* ═══ CONTENT ══════════════════════════════════════════════ */

.content {
    padding: 1rem;
    padding-bottom: calc(1rem + var(--safe-bottom));
    max-width: 800px;
    margin: 0 auto;
}

.panel {
    display: none;
    animation: fadeIn 0.25s ease;
}

.panel.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

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


/* ═══ CARDS ════════════════════════════════════════════════ */

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    margin-bottom: 1rem;
    backdrop-filter: blur(8px);
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}


/* ═══ METRIC CARDS ═════════════════════════════════════════ */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(155px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.metric-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    backdrop-filter: blur(8px);
    transition: border-color var(--transition);
}

.metric-card:hover {
    border-color: rgba(255, 255, 255, 0.12);
}

.metric-icon {
    font-size: 1.5rem;
    min-width: 2rem;
    text-align: center;
}

.metric-body {
    flex: 1;
    min-width: 0;
}

.metric-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-dim);
    margin-bottom: 2px;
}

.metric-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}

.metric-unit {
    font-size: 0.75rem;
    color: var(--text-dim);
    align-self: flex-end;
    padding-bottom: 4px;
}


/* ═══ STATE GRID ═══════════════════════════════════════════ */

.state-grid {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.state-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.4rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}

.state-row:last-child {
    border-bottom: none;
}

.state-row span:first-child {
    color: var(--text-secondary);
}


/* ═══ ZONE CARDS ═══════════════════════════════════════════ */

.zone-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
}

.zone-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 1rem 0.5rem;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
}

.zone-card:hover {
    background: var(--accent-bg);
    border-color: var(--accent);
}

.zone-card:active {
    transform: scale(0.95);
}

.zone-num {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

.zone-label {
    font-size: 0.75rem;
    color: var(--text-dim);
}


/* ═══ FORMS ════════════════════════════════════════════════ */

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.form-grid label {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.form-row {
    display: flex;
    align-items: flex-end;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.form-row label {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.zone-checks,
.day-checks,
.seq-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.check {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
}

.check:has(input:checked) {
    background: var(--accent-bg);
    border-color: var(--accent);
    color: var(--accent);
}

.check input[type="checkbox"] {
    width: 14px;
    height: 14px;
    accent-color: var(--accent);
}


/* ═══ CHIPS (chart range) ══════════════════════════════════ */

.chart-controls {
    display: flex;
    gap: 6px;
    margin-bottom: 0.75rem;
}

.chip {
    padding: 4px 14px;
    font: inherit;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: none;
    color: var(--text-dim);
    cursor: pointer;
    transition: all var(--transition);
}

.chip:hover {
    color: var(--text-secondary);
}

.chip.active {
    background: var(--accent-bg);
    border-color: var(--accent);
    color: var(--accent);
}


/* ═══ EVENT LIST ═══════════════════════════════════════════ */

.event-list {
    max-height: 300px;
    overflow-y: auto;
}

.event-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.85rem;
}

.event-row:last-child {
    border-bottom: none;
}

.event-time {
    color: var(--text-dim);
    font-size: 0.75rem;
}

.event-type {
    font-weight: 500;
}

.event-zone {
    color: var(--accent);
}


/* ═══ TOAST ════════════════════════════════════════════════ */

.toast {
    position: fixed;
    bottom: calc(1.5rem + var(--safe-bottom));
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: #fff;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    z-index: 1000;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
}

.toast.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast.success {
    border-color: var(--accent);
}

.toast.error {
    border-color: var(--danger);
}


/* ═══ CANVAS / CHART ═══════════════════════════════════════ */

canvas {
    width: 100% !important;
    height: auto !important;
    border-radius: var(--radius-sm);
}


/* ═══ RESPONSIVE ═══════════════════════════════════════════ */

@media (min-width: 768px) {
    .content {
        padding: 1.5rem 2rem;
    }

    .card-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .form-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .content {
        padding: 2rem 3rem;
        max-width: 960px;
    }

    .card-grid {
        grid-template-columns: repeat(5, 1fr);
    }

    .tab-bar {
        justify-content: center;
        gap: 0.5rem;
    }

    .tab {
        flex: unset;
        padding: 10px 20px;
        font-size: 0.8rem;
    }
}

@media (max-width: 400px) {
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .zone-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .metric-value {
        font-size: 1.1rem;
    }
}