/* ============================================================
   Daily Tracker — editorial field-journal aesthetic.
   Warm copper on espresso (dark) / cream (light).
   Uses system fonts only — no external font dependencies.
   ============================================================ */

:root {
    /* "New York" on Apple, Cambria-like on Windows, Noto Serif on Android/Linux.
       Gives a warm, literary feel without loading a webfont. */
    --font-display: ui-serif, "New York", "Hoefler Text", Cambria, Georgia, serif;
    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI Variable", "Segoe UI", system-ui, Roboto, sans-serif;
    --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}

:root,
[data-theme="dark"] {
    --bg: #110f0d;
    --bg-soft: #16140f;
    --card: #1c1917;
    --border: #2d2822;
    --border-soft: #201d19;
    --text: #e8e2d8;
    --muted: #8a8279;
    --muted-soft: #5c554c;
    --accent: #c99a68;
    --accent-dim: #4a381f;
    --accent-ghost: #2a2015;
    --green: #7cb342;
    --orange: #e8a64a;
    --red: #e26a5c;
    --radius: 10px;
    --radius-sm: 6px;
    --chart-line: #c99a68;
    --chart-axis: #2d2822;
    --chart-label: #8a8279;
    --corr-bg: #1c1917;
    --shadow: 0 1px 0 0 rgba(255, 245, 220, 0.02) inset;
}

[data-theme="light"] {
    --bg: #f6f1e7;
    --bg-soft: #f0e9da;
    --card: #fdfaf3;
    --border: #e3d8c3;
    --border-soft: #ece2cf;
    --text: #2e261a;
    --muted: #8a7c63;
    --muted-soft: #b5a689;
    --accent: #a8743a;
    --accent-dim: #ecdcc1;
    --accent-ghost: #f4ead6;
    --green: #5a8a2e;
    --orange: #c67b1f;
    --red: #b94433;
    --radius: 10px;
    --radius-sm: 6px;
    --chart-line: #a8743a;
    --chart-axis: #e3d8c3;
    --chart-label: #8a7c63;
    --corr-bg: #fdfaf3;
    --shadow: 0 1px 2px rgba(60, 40, 15, 0.03);
}

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

html {
    -webkit-text-size-adjust: 100%;
    font-feature-settings: "ss01", "cv11";
}

body {
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.45;
    background: var(--bg);
    color: var(--text);
    max-width: 480px;
    margin: 0 auto;
    padding: 20px 18px 88px;
    -webkit-tap-highlight-color: transparent;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

button, input, textarea { font: inherit; color: inherit; }

/* Shared number display */
.num {
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
}

/* ========== Header / brand ========== */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 0 20px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
}

.brand-mark {
    width: 26px;
    height: 26px;
    color: var(--accent);
    flex-shrink: 0;
}

.brand-wordmark {
    font-family: var(--font-display);
    font-optical-sizing: auto;
    font-weight: 500;
    font-size: 22px;
    letter-spacing: -0.015em;
    line-height: 1;
    font-feature-settings: "ss01";
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.theme-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--muted);
    width: 34px;
    height: 34px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: color 0.2s, border-color 0.2s, background 0.15s;
}

.theme-btn:hover { color: var(--text); border-color: var(--muted-soft); }
.theme-btn:active { background: var(--accent-ghost); }
.theme-btn svg { width: 16px; height: 16px; }

.save-indicator {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.04em;
    color: var(--muted);
    text-transform: uppercase;
    transition: opacity 0.3s, color 0.2s;
}

.save-indicator.saved { color: var(--green); }
.save-indicator.saving { color: var(--orange); }
.save-indicator.error { color: var(--red); }
.save-indicator.queued { color: var(--muted); }

.sync-btn {
    position: relative;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--muted);
    width: 34px;
    height: 34px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: color 0.2s, border-color 0.2s, background 0.15s;
}
.sync-btn[hidden] { display: none; }
.sync-btn svg { width: 16px; height: 16px; }
.sync-btn:hover { color: var(--text); border-color: var(--muted-soft); }
.sync-btn.queued { color: var(--orange); border-color: var(--orange); }
.sync-btn.offline { color: var(--red); border-color: var(--red); }

.sync-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    border-radius: 8px;
    background: var(--red);
    color: #fff;
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 600;
    line-height: 16px;
    text-align: center;
}
.sync-badge:empty { display: none; }

.sync-popup-actions {
    display: flex;
    gap: 8px;
    margin-top: 16px;
}
.sync-popup-actions .day-popup-close { margin-top: 0; flex: 1; }
#sync-popup-body p { margin: 0 0 10px; font-size: 13px; line-height: 1.5; color: var(--text); }
#sync-popup-body p:last-child { margin-bottom: 0; }
#sync-popup-body .sync-popup-meta { color: var(--muted); font-size: 12px; }

/* ========== Streak bar ========== */
.streak-bar {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 16px;
    margin-bottom: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
}

.streak-text { display: flex; flex-direction: column; gap: 2px; }

.streak-count {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 26px;
    line-height: 1;
    letter-spacing: -0.02em;
    font-variant-numeric: tabular-nums;
}

.streak-progress {
    font-size: 12px;
    color: var(--muted);
    letter-spacing: 0.01em;
}

.progress-ring { width: 38px; height: 38px; }
.progress-ring-bg { stroke: var(--border); }
.progress-ring-fill {
    stroke: var(--accent);
    transition: stroke-dashoffset 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== Nav (editorial segmented) ========== */
.nav {
    display: flex;
    gap: 2px;
    margin-bottom: 24px;
    background: var(--bg-soft);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius);
    padding: 3px;
}

.nav button {
    flex: 1;
    padding: 8px 10px;
    background: transparent;
    color: var(--muted);
    border: none;
    border-radius: calc(var(--radius) - 4px);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.005em;
    cursor: pointer;
    transition: color 0.2s, background 0.2s;
}

.nav button:hover { color: var(--text); }

.nav button.active {
    background: var(--card);
    color: var(--text);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
}

/* ========== Section titles ========== */
.section-title {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 12px;
    font-style: italic;
    color: var(--muted);
    margin: 26px 2px 10px;
    letter-spacing: 0.005em;
}

.section-title:first-child { margin-top: 4px; }

/* ========== Field rows ========== */
.field {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 16px;
    margin-bottom: 6px;
    box-shadow: var(--shadow);
}

.field-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.field-label {
    font-size: 12px;
    color: var(--muted);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.clear-btn {
    font-size: 10px;
    color: var(--muted);
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 2px 8px;
    cursor: pointer;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.clear-btn:hover { color: var(--text); border-color: var(--muted-soft); }
.clear-btn:active { background: var(--border); }

/* ========== Stepper ========== */
.stepper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
}

.stepper button {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    line-height: 0;
    transition: background 0.12s, border-color 0.12s, transform 0.08s;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
}

.stepper button:active {
    background: var(--accent-ghost);
    border-color: var(--accent-dim);
    transform: scale(0.94);
}

.stepper .stepper-icon {
    width: 14px;
    height: 14px;
    display: block;
    shape-rendering: geometricPrecision;
}

.stepper .stepper-value {
    min-width: 110px;
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
    cursor: text;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: background 0.15s;
}

.stepper .stepper-value:hover { background: var(--accent-ghost); }

.stepper-num {
    font-family: var(--font-mono);
    font-size: 26px;
    font-weight: 500;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.01em;
    line-height: 1.1;
    color: var(--text);
}

.stepper-input {
    width: 88px;
    text-align: center;
    background: var(--bg-soft);
    border: 1px solid var(--accent);
    border-radius: var(--radius-sm);
    padding: 2px 6px;
    outline: none;
    caret-color: var(--accent);
}

.stepper .stepper-unit {
    font-family: var(--font-body);
    font-size: 12px;
    color: var(--muted);
    font-weight: 400;
    letter-spacing: 0.02em;
}

/* ========== Emoji rating ========== */
.emoji-row {
    display: flex;
    gap: 6px;
    justify-content: space-between;
}

.emoji-btn {
    flex: 1;
    height: 54px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: transparent;
    font-size: 22px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1px;
    transition: border-color 0.15s, background 0.15s, transform 0.1s;
    user-select: none;
    -webkit-user-select: none;
}

.emoji-btn .emoji-num {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--muted);
    letter-spacing: 0.05em;
}

.emoji-btn.selected {
    border-color: var(--accent);
    background: var(--accent-ghost);
}

.emoji-btn.selected .emoji-num { color: var(--accent); }

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

/* ========== Toggle + text ========== */
.toggle-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
}

.toggle {
    width: 44px;
    height: 26px;
    border-radius: 13px;
    border: none;
    background: var(--border);
    position: relative;
    cursor: pointer;
    transition: background 0.2s;
    flex-shrink: 0;
}

.toggle.on { background: var(--accent); }

.toggle::after {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #fff;
    top: 3px;
    left: 3px;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.toggle.on::after { transform: translateX(18px); }

.toggle-label { font-size: 14px; }

.toggle-text-input { margin-top: 10px; display: none; }
.toggle-text-input.visible { display: block; }

.toggle-text-input input {
    width: 100%;
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    padding: 9px 12px;
    font-size: 14px;
    transition: border-color 0.15s, background 0.15s;
}

.toggle-text-input input:focus {
    outline: none;
    border-color: var(--accent);
    background: var(--card);
}

/* ========== Textarea ========== */
.comment-box {
    width: 100%;
    min-height: 84px;
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    padding: 11px 12px;
    font-size: 14px;
    font-family: inherit;
    line-height: 1.5;
    resize: vertical;
    transition: border-color 0.15s, background 0.15s;
}

.comment-box:focus {
    outline: none;
    border-color: var(--accent);
    background: var(--card);
}

.comment-box::placeholder { color: var(--muted-soft); }

/* ========== Pages ========== */
.page { display: none; animation: fadeIn 0.3s ease-out; }
.page.active { display: block; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========== Insights ========== */
.correlation-info {
    font-size: 12px;
    color: var(--muted);
    margin-bottom: 10px;
    line-height: 1.5;
}

.heatmap-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 12px 0;
}

.heatmap-table {
    border-collapse: collapse;
    font-size: 11px;
    font-family: var(--font-mono);
}

.heatmap-table th, .heatmap-table td {
    padding: 4px 6px;
    text-align: center;
    white-space: nowrap;
}

.heatmap-table th {
    color: var(--muted);
    font-weight: 500;
}

.correlation-item {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 14px;
    margin-bottom: 6px;
    font-size: 13px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
}

.correlation-item .r-value {
    font-family: var(--font-mono);
    font-weight: 500;
    font-variant-numeric: tabular-nums;
    font-size: 13px;
}

.r-positive { color: var(--green); }
.r-negative { color: var(--red); }

/* ========== Chart ========== */
.chart-container {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 14px 10px;
    margin-bottom: 8px;
    box-shadow: var(--shadow);
}

.chart-title {
    font-family: var(--font-display);
    font-style: italic;
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 8px;
    font-weight: 500;
}

/* ========== History dots ========== */
.history-row {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
    margin: 10px 0 4px;
}

.history-dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: var(--border);
    transition: transform 0.15s;
}

.history-dot:hover { transform: scale(1.2); }
.history-dot.full { background: var(--green); }
.history-dot.partial { background: var(--orange); }
.history-dot.missed { background: var(--border); }

/* ========== Heatmap grid ========== */
.hg { display: flex; flex-direction: column; gap: 3px; }

.hg-row {
    display: grid;
    grid-template-columns: 32px repeat(7, 1fr);
    gap: 3px;
    align-items: center;
}

.hg-header { margin-bottom: 2px; }

.hg-day-label {
    text-align: center;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--muted);
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.hg-week-label {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--muted);
    text-align: right;
    padding-right: 4px;
    letter-spacing: 0.02em;
}

.hg-cell {
    aspect-ratio: 1;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    background: var(--bg-soft);
    min-height: 30px;
    cursor: pointer;
    transition: transform 0.1s, background 0.15s;
}

.hg-cell:hover { transform: scale(1.05); }
.hg-cell.hg-empty { background: transparent; cursor: default; }
.hg-cell.hg-empty:hover { transform: none; }

.hg-cell.hg-today {
    outline: 1.5px solid var(--accent);
    outline-offset: -1px;
}

.hg-current-week .hg-week-label {
    color: var(--accent);
    font-weight: 600;
}

.heatmap-legend {
    display: flex;
    gap: 12px;
    margin-top: 10px;
    font-size: 10px;
    color: var(--muted);
    flex-wrap: wrap;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-family: var(--font-mono);
}

.legend-item { display: flex; align-items: center; gap: 4px; }

/* ========== Settings ========== */
.settings-field {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 14px;
    margin-bottom: 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
}

.settings-field-label {
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.settings-field-section {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.settings-toggle {
    width: 40px;
    height: 24px;
    border-radius: 12px;
    border: none;
    background: var(--border);
    position: relative;
    cursor: pointer;
    transition: background 0.2s;
    flex-shrink: 0;
}

.settings-toggle.on { background: var(--green); }

.settings-toggle::after {
    content: "";
    position: absolute;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #fff;
    top: 3px;
    left: 3px;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.settings-toggle.on::after { transform: translateX(16px); }

.settings-field-stack {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
}

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

.settings-input-row input {
    flex: 1;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 10px;
    color: var(--text);
    font-size: 14px;
    font-family: var(--font-mono);
}

.settings-input-row input:focus {
    outline: none;
    border-color: var(--green);
}

.settings-input-row button {
    background: var(--green);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 0 14px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}

.settings-input-row button:disabled {
    opacity: 0.6;
    cursor: default;
}

/* ========== Day popup ========== */
.day-popup-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(17, 15, 13, 0.65);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    z-index: 100;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease-out;
}

.day-popup-overlay.visible { display: flex; }

.day-popup {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    max-width: 360px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.day-popup-date {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 500;
    letter-spacing: -0.01em;
    margin-bottom: 14px;
}

.day-popup-field {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-soft);
    font-size: 13px;
}

.day-popup-field:last-child { border-bottom: none; }

.day-popup-label {
    color: var(--muted);
    font-size: 12px;
    letter-spacing: 0.01em;
}

.day-popup-value {
    font-family: var(--font-mono);
    font-weight: 500;
    font-variant-numeric: tabular-nums;
}

.day-popup-close {
    display: block;
    margin-top: 16px;
    width: 100%;
    padding: 10px;
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.day-popup-close:hover {
    background: var(--accent-ghost);
    border-color: var(--accent-dim);
}

/* ========== Responsive ========== */
@media (max-width: 380px) {
    body { padding: 18px 14px 84px; }
    .brand-wordmark { font-size: 20px; }
    .streak-count { font-size: 23px; }
    .emoji-btn { height: 48px; font-size: 19px; }
    .stepper .stepper-value { font-size: 22px; min-width: 90px; }
    .hg-cell { font-size: 12px; min-height: 26px; }
    .hg-row { grid-template-columns: 28px repeat(7, 1fr); }
    .hg-week-label { font-size: 8px; }
}

/* ========== Logout button ========== */
.logout-btn {
    width: 100%;
    padding: 11px 14px;
    background: transparent;
    color: var(--muted);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    cursor: pointer;
}
.logout-btn:hover { color: var(--red); border-color: var(--red); }
.logout-btn:active { opacity: 0.8; }

/* ========== Reduced motion ========== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}