:root {
    --bg: #0a0a0b;
    --surface: #141416;
    --edge: rgba(255, 255, 255, 0.1);
    --rule: rgba(255, 255, 255, 0.15);
    --rule-strong: rgba(255, 255, 255, 0.3);
    --text: #f0f0f2;
    --text-dim: #a8a8ad;
    --accent: #e8c468;
    --accent-dim: rgba(232, 196, 104, 0.301);
    --danger: #e2694f;
    --row-alt: rgba(255, 255, 255, 0.05);

    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Work Sans', Arial, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

* {
    box-sizing: border-box;
}



body {
    margin: 0;
    min-height: 100vh;
    background-color: var(--bg);
    color: var(--text);
    display: flex;
    justify-content: center;
    font-family: Arial, sans-serif;
    padding: 2.5rem 1rem 4rem;
}

.page {
    width: 100%;
    max-width: 480px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;

}

.panel {
    background: var(--surface);
    border: 1px solid white;
    box-shadow: 8px 10px 5px rgba(255, 255, 255, 0.849);
    border-radius: 10px;
    padding: 1.6rem 1.4rem 1.5rem;
}

.panel-header {
    text-align: center;
}

.panel-header--left {
    text-align: left;
}

.eyebrow {
    margin: 0 0 0.2rem;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-dim);
}

.panel-title {
    margin: 0;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.4rem;
}


#dateDisplay {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 2.3rem;
    line-height: 1.15;
    color: var(--accent);
}

.rule {
    border: none;
    border-top: 1px dashed var(--rule-strong);
    margin: 1rem 0 1.25rem;
    ;
}



.picker-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}



#text {
    color: var(--text-dim);
    font-size: 0.9rem;
}

input[type=date] {
    padding: 0.5rem 0.7rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text);
    border: 1px solid var(--edge);
    border-radius: 6px;
    accent-color: var(--accent);
    background-color: rgba(255, 255, 255, 0.4);

}

input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(1) opacity(0.6);
    cursor: pointer;
}

input[type="date"]:focus-visible,
input[type="date"]:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-color: var(--accent);
}

.secondary-btn {
    display: block;
    width: 100%;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.04em;
    color: var(--text);
    background: transparent;
    border-radius: 6px;
    border: 1px dashed var(--rule-strong);
    padding: 0.6rem 0.8rem;
    margin-bottom: 1.4rem;
    cursor: pointer;
    transition: border-color 0.15s ease, color 0.15s ease, background-color 0.15s ease;
}

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

.secondary-btn.is-active {
    background: var(--accent-dim);
    border-style: solid;
    border-color: var(--accent);
    color: var(--accent);
}

.secondary-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}




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

thead th {
    text-align: left;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-dim);
    padding: 0 0.6rem 0.6rem;
    border-bottom: 1px solid var(--rule-strong);
}


th:first-child,
td:first-child {
    width: 3.2rem;
}

tbody td {
    padding: 0.72rem 0.6rem;
    border-bottom: 1px dashed var(--rule);
    font-size: 0.94rem;
}

tbody tr:last-child td {
    border-bottom: none;
}

tbody tr:nth-child(even) td {
    background-color: var(--row-alt);
}

tbody tr:hover td {
    background-color: var(--accent-dim);
}

tbody td:first-child {
    font-family: var(--font-mono);
    color: var(--accent);
    font-weight: 500;
}

tbody td[colspan] {
    text-align: center;
    padding: 1.3rem 0.6rem;
    color: var(--text-dim);
    font-style: italic;
}

.add-subject-form {
    display: flex;
    gap: 0.6rem;
    margin-bottom: 1.25rem;
}

.add-subject-form input[type="text"] {
    flex: 1;
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--text);
    background-color: rgba(255, 225, 255, 0.04);
    border: 1px solid var(--edge);
    border-radius: 6px;
    padding: 0.55rem 0.7rem;
}

.add-subject-form input[type="text"]:focus-visible,
.add-subject-form input[type="text"]:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-color: var(--accent);
}

.primary-btn {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: #101011;
    background-color: var(--accent);
    border: none;
    border-radius: 6px;
    padding: 0 1rem;
    cursor: pointer;
    transition: opacity 0.15s ease;
}

.primary-btn:hover {
    opacity: 0.85;
}

.primary-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.subject-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}

.empty-state {
    color: var(--text-dim);
    font-size: 0.9rem;
    font-style: italic;
    text-align: center;
    padding: 1rem 0;
}

.subject-card {
    border: 1px solid var(--edge);
    border-radius: 6px;
    padding: 0.9rem 1rem;

}

.subject-card__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.6rem;
}

.subject-card__name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.05rem;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-size: 1.1rem;
    line-height: 1;
    cursor: pointer;
    padding: 0.1rem 0.3rem;
}

.icon-btn:hover {
    color: var(--danger);
}

.icon-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.subject-card__status {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem;
    flex-wrap: wrap;
    padding-top: 0.6rem;
    border-top: 1px dashed var(--rule);
}

.status-text {
    font-family: var(--font-mono);
    font-size: 0.76rem;
    color: var(--text-dim);
}

.check-btn {
    font-family: var(--font-mono);
    font-size: 0.74rem;
    color: var(--accent);
    background: var(--accent-dim);
    border-radius: 5px;
    padding: 0.35rem 0.6rem;
    cursor: pointer;
    transition: opacity 0.15s ease;
}

.check-btn:hover {
    opacity: 0.8;
}

.check-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.subject-card__note {
    margin-top: 0.6rem;
}

.subject-card__note summary {
    font-family: var(--font-mono);
    font-size: 0.74rem;
    letter-spacing: 0.06rem;
    text-transform: uppercase;
    color: var(--text-dim);
    cursor: pointer;
}

.subject-card__note summary:hover {
    color: var(--text);
}

.note-input {
    width: 100%;
    min-height: 4.5rem;
    margin-top: 0.6rem;
    resize: vertical;
    font-family: var(--font-body);
    font-size: 0.88rem;
    color: var(--text);
    background-color: rgba(255, 255, 255, 0.04);
    border-radius: 6px;
    padding: 0.55rem 0.7rem;
}

.note-input:focus-visible,
.note-input:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-color: var(--accent);
}

.save-note-btn{
    margin-top: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.74rem;
    color: var(--text);
    background: transparent;
    border: 1px dashed var(--rule-strong);
    padding: 0.35rem 0.6rem;
    cursor: pointer;
}
.save-note-btn:hover{
    border-color: var(--accent);
    color: var(--accent);
}

.save-note-btn:focus-visible{
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* =========== AI ============== */

@media (max-width: 400px) {
    #dateDisplay {
        font-size: 1.9rem;
    }

    .panel {
        padding: 1.25rem 1rem 1.2rem;
    }

    .picker-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .subject-card__status {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* ---------------------------------------------------
   Motion preference
--------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
    }
}