:root {
    --bg: #fff7fb;
    --bg-card: #ffffff;
    --bg-elev: #fdf2f8;
    --text: #2a2030;
    --text-soft: #6b5a72;
    --border: #f1ddea;
    --primary: #d96ba0;
    --primary-strong: #b94a82;
    --primary-soft: #ffe3ef;
    --success: #6bbf8f;
    --success-soft: #e4f7ec;
    --warning: #e7a44a;
    --danger: #d96b6b;
    --danger-soft: #fde2e2;
    --shadow: 0 4px 14px rgba(180, 100, 140, 0.08);
    --radius: 14px;
    --high: #e07a7a;
    --medium: #e6b15a;
    --low: #7bbf8b;
}

html[data-theme="dark"] {
    --bg: #1a1620;
    --bg-card: #241d2c;
    --bg-elev: #2c2335;
    --text: #f3e7ee;
    --text-soft: #b39cb0;
    --border: #3a2f44;
    --primary: #e288b5;
    --primary-strong: #f0a4c8;
    --primary-soft: #3a2233;
    --success: #7fcfa3;
    --success-soft: #1f3a2a;
    --danger: #e08a8a;
    --danger-soft: #3a1f20;
    --shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
    --high: #e88989;
    --medium: #efc370;
    --low: #8bd09a;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    min-height: 100vh;
}

a { color: var(--primary-strong); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    gap: 8px;
}

.brand {
    min-width: 0;
    flex: 0 1 auto;
}

.brand a, .brand span {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-strong);
    text-decoration: none;
    white-space: nowrap;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 0 0 auto;
}

.topbar-actions .btn {
    white-space: nowrap;
}

.user-email {
    font-size: 0.9rem;
    color: var(--text-soft);
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.icon-btn {
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 999px;
    width: 40px;
    height: 40px;
    cursor: pointer;
    font-size: 1.1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text);
}

.icon-btn:hover { background: var(--bg-elev); }

html[data-theme="light"] .theme-icon-dark { display: none; }
html[data-theme="dark"] .theme-icon-light { display: none; }

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px;
}

.container-narrow {
    max-width: 520px;
}

.footer {
    text-align: center;
    padding: 24px;
    color: var(--text-soft);
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

h1 { margin-top: 0; color: var(--primary-strong); }
h2 { margin-top: 0; }
h3 { margin-top: 0; color: var(--primary-strong); }

.btn {
    display: inline-block;
    border: none;
    border-radius: 10px;
    padding: 10px 18px;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.15s, transform 0.05s;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
    background: var(--primary);
    color: white;
}
.btn-primary:hover { background: var(--primary-strong); }

.btn-ghost {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--bg-elev); }

.btn-danger {
    background: var(--danger-soft);
    color: var(--danger);
}
.btn-danger:hover { background: var(--danger); color: white; }

.btn-small {
    padding: 6px 10px;
    font-size: 0.85rem;
    border-radius: 8px;
}

.btn-large {
    padding: 14px 22px;
    font-size: 1.1rem;
    border-radius: 12px;
}

.btn-block { display: block; width: 100%; }

.inline-form { display: inline; }

/* Auth */
.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    margin-top: 32px;
    box-shadow: var(--shadow);
}
.auth-card h1 { text-align: center; }
.auth-card .lead { color: var(--text-soft); text-align: center; }

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 18px;
}
.auth-form label { font-weight: 600; }
.auth-form input[type="email"] {
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 1rem;
    background: var(--bg-elev);
    color: var(--text);
}
.auth-form button { margin-top: 10px; }
.small-note {
    margin-top: 16px;
    text-align: center;
    color: var(--text-soft);
    font-size: 0.9rem;
}

.alert {
    padding: 12px 14px;
    border-radius: 10px;
    margin: 12px 0;
}
.alert-success {
    background: var(--success-soft);
    color: var(--success);
    border: 1px solid var(--success);
}
.alert-error {
    background: var(--danger-soft);
    color: var(--danger);
    border: 1px solid var(--danger);
}

/* Dashboard */
.day-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
}

.date-form {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}
.date-form .btn {
    white-space: nowrap;
}
.date-form input[type="date"] {
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--bg-elev);
    color: var(--text);
    font-size: 1rem;
}

.day-title {
    color: var(--primary-strong);
    text-transform: capitalize;
    margin: 0;
    font-size: 1.2rem;
}

.start-form, .add-form {
    margin-top: 12px;
    text-align: center;
}

.active-session {
    background: var(--primary-soft);
    border: 1px solid var(--primary);
    border-radius: var(--radius);
    padding: 18px;
    margin-top: 12px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.active-session.is-paused {
    background: var(--bg-elev);
    border-color: var(--border);
}
.active-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}
.active-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--primary-strong);
}
.active-session.is-paused .active-status { color: var(--text-soft); }
.active-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.active-actions form { flex: 1 1 auto; }
.active-actions .btn { width: 100%; }

.pulse {
    color: var(--danger);
    animation: pulse 1.2s ease-in-out infinite;
    font-size: 1.2rem;
}
.paused-dot {
    color: var(--text-soft);
    font-size: 1.2rem;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}
.timer {
    font-variant-numeric: tabular-nums;
    font-weight: 700;
    font-size: 2rem;
    color: var(--primary-strong);
    letter-spacing: 0.02em;
}
.active-session.is-paused .timer { color: var(--text-soft); }

/* Session list — collapsible cards */
.session-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 8px;
}
.session-card {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.session-card[open] {
    border-color: var(--primary);
    box-shadow: var(--shadow);
}
.session-summary {
    list-style: none;
    cursor: pointer;
    padding: 12px 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    user-select: none;
}
.session-summary::-webkit-details-marker { display: none; }
.session-summary:hover { background: var(--bg-card); }

.summary-main {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    min-width: 0;
    flex: 1 1 auto;
}
.summary-time {
    font-weight: 700;
    color: var(--text);
    font-variant-numeric: tabular-nums;
    font-size: 1.05rem;
}
.summary-duration {
    color: var(--primary-strong);
    font-weight: 600;
}
.summary-chip {
    display: inline-block;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 2px 10px;
    font-size: 0.85rem;
    color: var(--text-soft);
}
.summary-chip.chip-high {
    background: rgba(224, 122, 122, 0.15);
    border-color: var(--high);
    color: var(--high);
}
.summary-chip.chip-medium {
    background: rgba(230, 177, 90, 0.15);
    border-color: var(--medium);
    color: var(--medium);
}
.summary-chip.chip-low {
    background: rgba(123, 191, 139, 0.15);
    border-color: var(--low);
    color: var(--low);
}
.summary-chip.chip-shield {
    background: var(--primary-soft);
    border-color: var(--primary);
    color: var(--primary-strong);
}
.edit-icon {
    font-size: 1.2rem;
    flex: 0 0 auto;
    padding: 6px 10px;
    border-radius: 8px;
    transition: background 0.15s;
}
.session-summary:hover .edit-icon { background: var(--primary-soft); }
.session-card[open] .edit-icon { background: var(--primary-soft); }

.edit-form {
    padding: 14px;
    border-top: 1px solid var(--border);
    background: var(--bg-card);
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.field {
    display: flex;
    flex-direction: column;
    gap: 5px;
}
.field label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-soft);
}
.edit-form input[type="datetime-local"],
.edit-form input[type="number"],
.edit-form select {
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--bg-elev);
    color: var(--text);
    font-size: 1rem;
    width: 100%;
}
.switch-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    padding: 8px 0;
}
.switch-label > span:first-child {
    font-weight: 500;
    color: var(--text);
}
.edit-actions {
    display: flex;
    gap: 10px;
    padding-top: 4px;
}
.edit-actions .btn { flex: 1; padding: 10px; }

/* Switch */
.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: var(--border);
    transition: 0.2s;
    border-radius: 24px;
}
.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    top: 3px;
    background-color: white;
    transition: 0.2s;
    border-radius: 50%;
}
.switch input:checked + .slider { background: var(--primary); }
.switch input:checked + .slider:before { transform: translateX(20px); }

/* Summary */
.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    margin-top: 12px;
}
.stat {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px;
    text-align: center;
}
.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-strong);
}
.stat-label {
    color: var(--text-soft);
    font-size: 0.85rem;
    margin-top: 4px;
}
.stat-high .stat-value { color: var(--high); }
.stat-medium .stat-value { color: var(--medium); }
.stat-low .stat-value { color: var(--low); }

.empty {
    color: var(--text-soft);
    text-align: center;
    padding: 20px;
    font-style: italic;
}

.praise-banner {
    background: linear-gradient(135deg, var(--primary-soft), var(--success-soft));
    border: 1px solid var(--primary);
    border-radius: var(--radius);
    padding: 14px 18px;
    margin-bottom: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
    animation: praiseIn 0.4s ease-out;
}
.praise-text {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--primary-strong);
}
@keyframes praiseIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Hide email earlier — it's not essential info */
@media (max-width: 900px) {
    .user-email { display: none; }
}

@media (max-width: 760px) {
    .topbar { padding: 10px 14px; gap: 8px; }
    .topbar-actions { gap: 6px; }
    .brand a, .brand span { font-size: 1.05rem; }
    .icon-btn { width: 38px; height: 38px; font-size: 1rem; }
    .btn { padding: 8px 12px; font-size: 0.95rem; }
    .btn-large { padding: 12px 16px; font-size: 1rem; }
    .container { padding: 14px; }
    .card { padding: 14px; }
    .auth-card { padding: 20px; }
    .day-header { gap: 8px; flex-direction: column; align-items: stretch; }
    .day-title { font-size: 1.05rem; }
    .summary-grid { grid-template-columns: repeat(2, 1fr); }
    .stat { padding: 10px; }
    .stat-value { font-size: 1.4rem; }

    .active-session { padding: 14px; }
    .timer { font-size: 1.6rem; }
    .active-actions { flex-direction: column; }
    .active-actions .btn { width: 100%; }

    .summary-main { gap: 6px; }
    .summary-time { font-size: 1rem; }
    .summary-chip { font-size: 0.8rem; padding: 2px 8px; }
}

@media (max-width: 420px) {
    .brand a, .brand span { font-size: 1rem; }
    .topbar-actions .btn { padding: 7px 10px; font-size: 0.85rem; }
    .icon-btn { width: 36px; height: 36px; }
}