/* ===== Theme variables ===== */
:root {
    --bg: #f6f1e9;
    --bg-pattern: radial-gradient(circle at 20% 80%, rgba(139, 115, 85, 0.03) 0%, transparent 50%),
                  radial-gradient(circle at 80% 20%, rgba(139, 115, 85, 0.03) 0%, transparent 50%);
    --card: #ffffff;
    --text: #2c1810;
    --text-secondary: #6b5b4f;
    --text-muted: #9e8e7e;
    --border: #d4c5b0;
    --border-focus: #8b7355;
    --shadow: 0 2px 12px rgba(44, 24, 16, 0.06);
    --shadow-hover: 0 4px 20px rgba(44, 24, 16, 0.1);
    --green: #2e7d32;
    --green-bg: rgba(46, 125, 50, 0.08);
    --green-bg-hover: rgba(46, 125, 50, 0.18);
    --prefix-color: #1b5e20;
    --prefix-bg: rgba(27, 94, 32, 0.06);
    --prefix-bg-hover: rgba(27, 94, 32, 0.14);
    --red: #c62828;
    --red-bg: rgba(198, 40, 40, 0.08);
    --tooltip-bg: #2c1810;
    --tooltip-text: #f5f0e8;
    --tooltip-ref: #d4a574;
    --tooltip-section: #e8c47c;
    --tooltip-highlight: #7bed7b;
    --tooltip-divider: rgba(255, 255, 255, 0.15);
    --tooltip-muted: rgba(245, 240, 232, 0.5);
    --tooltip-prefix: #a0d8a0;
    --progress-track: #e0d6c8;
    --btn-bg: transparent;
    --btn-hover: rgba(139, 115, 85, 0.08);
    --btn-border: var(--border);
    --link: #7a6248;
}

.dark {
    --bg: #141821;
    --bg-pattern: radial-gradient(circle at 20% 80%, rgba(90, 122, 154, 0.04) 0%, transparent 50%),
                  radial-gradient(circle at 80% 20%, rgba(90, 122, 154, 0.04) 0%, transparent 50%);
    --card: #1c2333;
    --text: #e0ddd8;
    --text-secondary: #a09888;
    --text-muted: #605850;
    --border: #2e3a4a;
    --border-focus: #5a7a9a;
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.3);
    --green: #66bb6a;
    --green-bg: rgba(102, 187, 106, 0.1);
    --green-bg-hover: rgba(102, 187, 106, 0.2);
    --prefix-color: #81c784;
    --prefix-bg: rgba(129, 199, 132, 0.08);
    --prefix-bg-hover: rgba(129, 199, 132, 0.16);
    --red: #ef5350;
    --red-bg: rgba(239, 83, 80, 0.1);
    --tooltip-bg: #0d1218;
    --tooltip-text: #d8d4d0;
    --tooltip-ref: #d4a574;
    --tooltip-section: #e8c47c;
    --tooltip-highlight: #7bed7b;
    --tooltip-divider: rgba(255, 255, 255, 0.08);
    --tooltip-muted: rgba(216, 212, 208, 0.45);
    --tooltip-prefix: #8ecf8e;
    --progress-track: #252e3a;
    --btn-bg: transparent;
    --btn-hover: rgba(90, 122, 154, 0.1);
    --btn-border: var(--border);
    --link: #8aaa88;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Arial, sans-serif;
    background: var(--bg);
    background-image: var(--bg-pattern);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 2.5rem 1rem 1.5rem;
    direction: rtl;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    width: 100%;
    max-width: 780px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.hidden {
    display: none !important;
}

/* ===== Top bar ===== */
.top-bar {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.icon-btn {
    background: var(--btn-bg);
    border: 1px solid var(--btn-border);
    color: var(--text-muted);
    width: 36px;
    height: 36px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.icon-btn:hover {
    background: var(--btn-hover);
    color: var(--text-secondary);
    border-color: var(--border-focus);
}

.icon-moon { display: none; }
.dark .icon-sun { display: none; }
.dark .icon-moon { display: inline; }

/* ===== Top bar groups ===== */
.top-bar-group {
    display: flex;
    gap: 0.4rem;
}

/* ===== FAQ modal ===== */
.faq-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s, visibility 0.25s;
}

.faq-overlay.show {
    opacity: 1;
    visibility: visible;
}

.faq-modal {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 2rem 2.2rem;
    max-width: 560px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    line-height: 1.7;
    font-size: 0.95rem;
    color: var(--text);
    position: relative;
    transform: translateY(12px);
    transition: transform 0.25s ease;
}

.faq-overlay.show .faq-modal {
    transform: translateY(0);
}

.faq-close-btn {
    position: absolute;
    top: 0.8rem;
    left: 1rem;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.6rem;
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: background 0.2s, color 0.2s;
}

.faq-close-btn:hover {
    background: var(--btn-hover);
    color: var(--text);
}

.faq-modal h2 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    color: var(--text);
}

.faq-modal h3 {
    font-size: 1rem;
    margin-top: 1rem;
    margin-bottom: 0.3rem;
    color: var(--text);
}

.faq-modal p {
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
}

/* ===== Header ===== */
header {
    text-align: center;
    margin-bottom: 1.8rem;
}

h1 {
    font-size: 2.5rem;
    color: var(--text);
    margin-bottom: 0.3rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

/* ===== Section filters ===== */
.filters {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    margin-bottom: 1.4rem;
    flex-wrap: wrap;
}

.filter-label {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.filter-cb {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    color: var(--text);
    font-size: 0.9rem;
    cursor: pointer;
    user-select: none;
    padding: 0.3rem 0.6rem;
    border-radius: 6px;
    transition: background 0.2s;
}

.filter-cb:hover {
    background: var(--btn-hover);
}

.filter-cb input[type="checkbox"] {
    accent-color: var(--green);
    width: 15px;
    height: 15px;
    cursor: pointer;
}

/* ===== Input ===== */
textarea {
    width: 100%;
    padding: 1rem 1.2rem;
    font-size: 1.15rem;
    font-family: inherit;
    border: 1.5px solid var(--border);
    border-radius: 10px;
    background: var(--card);
    color: var(--text);
    direction: rtl;
    resize: vertical;
    min-height: 120px;
    box-shadow: var(--shadow);
    transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
}

textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: var(--shadow-hover);
}

textarea::placeholder {
    color: var(--text-muted);
}

/* ===== Action buttons ===== */
.btn-row {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.7rem;
}

.action-btn {
    padding: 0.4rem 0.9rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--btn-bg);
    color: var(--text-muted);
    font-size: 0.85rem;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.action-btn:hover {
    background: var(--btn-hover);
    color: var(--text-secondary);
    border-color: var(--border-focus);
}

.action-btn-primary {
    background: var(--green-bg);
    border-color: var(--green);
    color: var(--green);
}

.action-btn-primary:hover {
    background: var(--green-bg-hover);
}

.action-btn-text {
    background: none;
    border: none;
    color: var(--text-muted);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.action-btn-text:hover {
    color: var(--text-secondary);
    background: none;
}

/* ===== Loading ===== */
.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 1.05rem;
}

/* ===== Stats ===== */
.stats {
    text-align: center;
    padding: 1.4rem 1.5rem;
    margin: 1.5rem 0;
    background: var(--card);
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: background 0.3s;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.3rem;
}

.stat-main {
    margin-bottom: 0.4rem;
}

.percentage {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--text);
    transition: color 0.3s;
}

.percent-sign {
    font-size: 1.4rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.stat-detail {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-top: 0.4rem;
}

/* ===== Progress bar ===== */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--progress-track);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 0.4rem;
}

.progress-fill {
    height: 100%;
    width: 0%;
    border-radius: 4px;
    transition: width 0.5s ease, background 0.5s ease;
}

/* ===== Results ===== */
.results {
    padding: 1.4rem 1.5rem;
    margin: 1rem 0;
    background: var(--card);
    border-radius: 12px;
    box-shadow: var(--shadow);
    line-height: 2.8;
    font-size: 1.25rem;
    direction: rtl;
    word-wrap: break-word;
    overflow-wrap: break-word;
    overflow: visible;
    transition: background 0.3s;
}

.results:empty {
    display: none;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

.results:not(:empty) {
    animation: fadeIn 0.25s ease;
}

/* ===== Word highlights ===== */
.word-found {
    color: var(--text);
    position: relative;
    cursor: pointer;
    padding: 2px 5px;
    border-radius: 4px;
    background: var(--green-bg);
    transition: background 0.15s;
}

.word-found:hover {
    background: var(--green-bg-hover);
}

.word-prefix {
    color: var(--text);
    position: relative;
    cursor: pointer;
    padding: 2px 5px;
    border-radius: 4px;
    background: var(--green-bg);
    border-bottom: 2px dashed var(--green);
    transition: background 0.15s;
}

.word-prefix:hover {
    background: var(--green-bg-hover);
}

.word-notfound {
    color: var(--text-muted);
    padding: 2px 5px;
    border-radius: 4px;
    text-decoration: line-through;
    text-decoration-color: var(--red);
    opacity: 0.6;
}

/* ===== Acronym groups ===== */
.acronym-group {
    display: inline;
    padding: 2px 6px;
    border: 1px dashed var(--border);
    border-radius: 6px;
    position: relative;
}

.acronym-label {
    font-size: 0.65rem;
    color: var(--text-muted);
    vertical-align: super;
    margin-inline-start: 2px;
}

/* ===== Tooltips ===== */
.word-found .tooltip,
.word-prefix .tooltip {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    bottom: calc(100% + 8px);
    right: 50%;
    transform: translateX(50%);
    background: var(--tooltip-bg);
    color: var(--tooltip-text);
    padding: 14px 18px;
    border-radius: 10px;
    font-size: 0.88rem;
    font-weight: normal;
    line-height: 1.8;
    width: max-content;
    max-width: min(400px, 85vw);
    z-index: 100;
    transition: opacity 0.2s, visibility 0.2s;
    pointer-events: none;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
    text-align: right;
}

/* Invisible bridge between word and tooltip */
.word-found .tooltip::before,
.word-prefix .tooltip::before {
    content: '';
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    height: 14px;
}

.word-found .tooltip::after,
.word-prefix .tooltip::after {
    content: '';
    position: absolute;
    top: calc(100% - 1px);
    right: 50%;
    transform: translateX(50%);
    border: 6px solid transparent;
    border-top-color: var(--tooltip-bg);
    z-index: 1;
}

.word-found:hover .tooltip,
.word-prefix:hover .tooltip,
.word-found.active .tooltip,
.word-prefix.active .tooltip {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
}

.tooltip .source-label {
    display: block;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    color: var(--tooltip-muted);
    margin-bottom: 2px;
    text-transform: uppercase;
}

.tooltip .source-section {
    display: block;
    color: var(--tooltip-section);
    font-weight: bold;
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.tooltip .ref {
    color: var(--tooltip-ref);
    display: block;
    font-size: 0.85rem;
    margin-bottom: 2px;
}

.tooltip .freq {
    display: block;
    font-size: 0.75rem;
    color: var(--tooltip-muted);
    margin-bottom: 2px;
    text-decoration: none;
    transition: color 0.2s;
}

.tooltip a.freq:hover {
    color: var(--tooltip-highlight);
    text-decoration: underline;
}

.tooltip .prefix-note {
    display: block;
    font-size: 0.78rem;
    color: var(--tooltip-prefix);
    margin-bottom: 2px;
}

.tooltip .divider {
    border: none;
    border-top: 1px solid var(--tooltip-divider);
    margin: 6px 0;
}

.tooltip .verse-text {
    display: block;
    word-wrap: break-word;
    overflow-wrap: break-word;
    white-space: normal;
}

.tooltip .highlight {
    color: var(--tooltip-highlight);
    font-weight: bold;
}

/* ===== Legend ===== */
.legend {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin: 0.8rem 0;
    color: var(--text-muted);
    font-size: 0.8rem;
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 3px;
    display: inline-block;
    flex-shrink: 0;
}

/* Source-specific colors */
.dot-torah { background: #d4a017; }
.dot-neviim { background: #5b9bd5; }
.dot-ketuvim { background: #a86ebf; }
.dot-mishnah { background: #36b5a0; }
.notfound-dot { background: var(--text-muted); opacity: 0.5; }

.source-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    margin-inline-end: 2px;
}

/* Word source indicator — colored top border */
.word-found.src-torah, .word-prefix.src-torah { border-top: 3.5px solid #d4a017; }
.word-found.src-neviim, .word-prefix.src-neviim { border-top: 3.5px solid #5b9bd5; }
.word-found.src-ketuvim, .word-prefix.src-ketuvim { border-top: 3.5px solid #a86ebf; }
.word-found.src-mishnah, .word-prefix.src-mishnah { border-top: 3.5px solid #36b5a0; }

.filters-secondary {
    margin-top: -0.6rem;
    margin-bottom: 1.2rem;
}

.filters-secondary .filter-cb {
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* ===== Footer ===== */
footer {
    text-align: center;
    margin-top: 2.5rem;
    padding-top: 1.2rem;
    border-top: 1px solid var(--border);
}

.footer-credit {
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
    direction: ltr;
}

.made-by {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.twitter-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.3rem 0.5rem;
    border-radius: 8px;
    transition: background 0.2s, color 0.2s;
}

.twitter-link:hover {
    background: var(--btn-hover);
    color: var(--text);
}

.twitter-icon {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

.footer-data {
    color: var(--text-secondary);
    font-size: 0.82rem;
}

.footer-data a {
    color: var(--link);
    text-decoration: none;
}

.footer-data a:hover {
    text-decoration: underline;
}

/* ===== Toast ===== */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--tooltip-bg);
    color: var(--tooltip-text);
    padding: 0.65rem 1.3rem;
    border-radius: 10px;
    font-size: 0.9rem;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.3);
    opacity: 0;
    transition: opacity 0.3s, transform 0.3s;
    z-index: 200;
    pointer-events: none;
}

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

/* ===== Responsive ===== */
@media (max-width: 600px) {
    body {
        padding: 1rem 0.5rem;
        overflow-x: hidden;
    }

    h1 {
        font-size: 1.8rem;
    }

    .subtitle {
        font-size: 0.9rem;
    }

    .percentage {
        font-size: 2.2rem;
    }

    .results {
        font-size: 1.1rem;
        padding: 1rem;
        line-height: 2.2;
    }

    textarea {
        font-size: 1rem;
    }

    .filters {
        gap: 0.5rem;
    }

    .word-found .tooltip,
    .word-prefix .tooltip {
        position: fixed;
        bottom: 1rem;
        right: 1rem;
        left: 1rem;
        top: auto;
        transform: none;
        width: auto;
        max-width: none;
        font-size: 1rem;
    }

    .word-found .tooltip::after,
    .word-prefix .tooltip::after {
        display: none;
    }
}