/* =========================
   THEME VARIABLES
========================= */

:root {
    --bg: #0b0f14;         /* deep low-blue black */
    --bg2: #111827;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --card: #111827;
    --border: #1f2937;
    --accent: #60a5fa;
}

/* LIGHT MODE (for LASIK / HAO sensitivity users) */
html[data-theme="light"] {
    --bg: #f5f7fb;
    --bg2: #ffffff;
    --text: #111827;
    --muted: #4b5563;
    --card: #ffffff;
    --border: #d1d5db;
    --accent: #2563eb;
}

/* =========================
   BASE
========================= */

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    transition: background 0.25s ease, color 0.25s ease;
}

/* =========================
   TOP BAR
========================= */

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 22px;
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
}

.logo {
    font-weight: bold;
    font-size: 18px;
    text-decoration: none;
    color: white;
    cursor: pointer;
}

/* kill link states */
.logo:link,
.logo:visited,
.logo:hover,
.logo:active {
    color: white;
    text-decoration: none;
}

/* =========================
   THEME BUTTON (IMPORTANT PART)
========================= */

.theme-toggle {
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 999px;
    width: 42px;
    height: 42px;
    cursor: pointer;

    display: flex;
    align-items: center;
    justify-content: center;

    transition: 0.2s ease;
}

.theme-toggle:hover {
    border-color: var(--accent);
    transform: scale(1.05);
}

.theme-toggle .icon {
    font-size: 18px;
}

/* =========================
   NAV
========================= */

.nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    padding: 10px;
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
}

.nav a {
    color: var(--muted);
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 8px;
    transition: 0.2s;
}

.nav a:hover {
    background: rgba(96,165,250,0.1);
    color: var(--text);
}

/* =========================
   MAIN
========================= */

.container {
    max-width: 1100px;
    margin: auto;
    padding: 40px 20px;
}

/* HERO */

.hero {
    text-align: center;
    margin-bottom: 40px;
}

.hero p {
    color: var(--muted);
}

/* GRID */

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 18px;
}

/* CARDS */

.card {
    background: var(--card);
    border: 1px solid var(--border);
    padding: 18px;
    border-radius: 14px;
    text-decoration: none;
    color: var(--text);
    transition: 0.2s ease;
}

.card:hover {
    transform: translateY(-3px);
    border-color: var(--accent);
}

.card p {
    color: var(--muted);
}

/* FOOTER */

.footer {
    text-align: center;
    padding: 30px;
    color: var(--muted);
    border-top: 1px solid var(--border);
}


.article {
    margin-bottom: 40px;
}

.img {
    display: block;
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    border: 1px solid var(--border);
    margin: 15px auto;
}

.audio-btn {
    margin-top: 15px;
    padding: 10px 14px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--text);
    cursor: pointer;
}

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

/* collapsible section */
.collapse-btn {
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text);
    cursor: pointer;
}

.collapse-content {
    display: none;
    margin-top: 10px;
    padding: 10px;
    border-left: 2px solid var(--accent);
}

#forms {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
}

.q-form {
    display: none;
    margin-top: 30px;
    background: var(--card);
    padding: 20px;
    border-radius: 14px;
    border: 1px solid var(--border);
    width: 100%;
    max-width: 700px;
}

.q-form.active {
    display: block;
}

label {
    display: block;
    margin-top: 15px;
    margin-bottom: 5px;
    color: var(--muted);
}

select, input {
    width: 100%;
    padding: 10px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg2);
    color: var(--text);
}

.q-btn {
    cursor: pointer;
}

.admin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.admin-card {
    background: var(--card);
    border: 1px solid var(--border);
    padding: 15px;
    border-radius: 12px;
}

.admin-card pre {
    white-space: pre-wrap;
    color: var(--muted);
}

/* =========================
   FORM SYSTEM (CN SAFE)
========================= */

.q-form {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 22px;
    margin-bottom: 24px;
    box-shadow: 0 6px 18px rgba(0,0,0,0.25);
}

.q-form h2 {
    margin-top: 0;
    margin-bottom: 18px;
    font-size: 20px;
    color: var(--text);
}

/* Labels */
.q-form label {
    display: block;
    margin-top: 14px;
    margin-bottom: 6px;
    color: var(--muted);
    font-size: 14px;
}

/* Select inputs */
.q-form select {
    width: 100%;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--bg2);
    color: var(--text);
    font-size: 14px;
    outline: none;
    transition: 0.2s ease;
}

.q-form select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(96,165,250,0.15);
}

/* =========================
   BUTTON (IMPORTANT UPGRADE)
========================= */

.q-form button, .add-filter, #runAnalysis {
    margin-top: 18px;
    width: 100%;
    padding: 12px;
    border-radius: 12px;

    border: 1px solid transparent;
    background: linear-gradient(135deg, var(--accent), #3b82f6);
    color: white;

    font-size: 15px;
    font-weight: 600;
    cursor: pointer;

    transition: transform 0.15s ease, opacity 0.15s ease;
}

.remove-filter {
    margin-top: 18px;
    width: 100%;
    padding: 12px;
    border-radius: 12px;

    border: 1px solid transparent;
    background: linear-gradient(135deg, #ff7474, #f63b3b);
    color: white;

    font-size: 15px;
    font-weight: 600;
    cursor: pointer;

    transition: transform 0.15s ease, opacity 0.15s ease;
}

.q-form button:hover, .remove-filter:hover, .add-filter:hover, #runAnalysis:hover {
    transform: translateY(-1px);
    opacity: 0.95;
}

.q-form button:active, .remove-filter:active, .add-filter:active, #runAnalysis:active {
    transform: translateY(0px);
    opacity: 0.85;
}

/* =========================
   OPTIONAL: GROUPING IMPROVEMENT
========================= */

#forms {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
}

/* On bigger screens */
@media (min-width: 900px) {
    #forms {
        grid-template-columns: 1fr 1fr;
    }
}

/* NOT SUBMITTED */

.q-btn.not-submitted {
    border: 2px solid rgba(239, 68, 68, 0.6);
    background: rgba(239, 68, 68, 0.08);
}

/* SUBMITTED */

.q-btn.submitted {
    border: 2px solid rgba(34, 197, 94, 0.6);
    background: rgba(34, 197, 94, 0.08);
}

/* hover */

.q-btn.submitted:hover {
    border-color: #22c55e;
}

.q-btn.not-submitted:hover {
    border-color: #ef4444;
}

/* Form not submitted */

.q-form.not-submitted {
    border: 2px solid rgba(239, 68, 68, 0.45);
    background: rgba(239, 68, 68, 0.04);
}

/* Form submitted */

.q-form.submitted {
    border: 2px solid rgba(34, 197, 94, 0.45);
    background: rgba(34, 197, 94, 0.04);
}

a.link {
  color: hotpink;
  font-weight: bold;
}

/* =========================
   ARTICLE PAGE NAVIGATION
========================= */

.page-nav {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin: 25px 0 35px 0;
}

.page-link {
    width: 42px;
    height: 42px;

    display: flex;
    align-items: center;
    justify-content: center;

    text-decoration: none;
    font-weight: bold;
    font-size: 15px;

    border-radius: 12px;

    background: var(--card);
    border: 1px solid var(--border);
    color: var(--text);

    transition: 0.2s ease;
}

.page-link:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.page-link.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

figure {
    margin: 24px auto;
    max-width: 650px;
    width: 100%;
    text-align: center;
    /*padding: 10px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: rgba(255,255,255,0.02);*/
}

figure img {
    display: block;
    max-width: 100%;
    max-height: 100%;   /* prevents huge vertical dominance */
    height: auto;
    margin: 0 auto;
    border-radius: 12px;
}

figure figcaption {
    text-align: center;
    margin-top: 8px;
}

/* Hide default checkbox */
.check-pill input {
    display: none;
}

/* Base pill */
.check-pill span {
    display: inline-block;
    padding: 10px 14px;
    border-radius: 999px;

    border: 1px solid var(--border);
    background: var(--bg2);
    color: var(--text);

    cursor: pointer;
    transition: 0.2s ease;

    user-select: none;
}

/* Hover */
.check-pill span:hover {
    border-color: var(--accent);
    transform: translateY(-1px);
}

/* Selected state */
.check-pill input:checked + span {
    background: rgba(96,165,250,0.18);
    border-color: var(--accent);
    color: var(--text);
    box-shadow: 0 0 0 2px rgba(96,165,250,0.15);
}

/* optional active press */
.check-pill span:active {
    transform: scale(0.98);
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    width: 100%;
    max-width: 100%;
}

.check-pill {
    flex: 0 0 auto;
}
/* the actual clickable pill */
.check-pill span {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    padding: 10px 14px;
    border-radius: 999px;

    border: 1px solid var(--border);
    background: var(--bg2);
    color: var(--text);

    cursor: pointer;
    user-select: none;

    transition: 0.2s ease;

    /* IMPORTANT: prevents overflow madness */
    white-space: nowrap;
}

/* hover */
.check-pill span:hover {
    border-color: var(--accent);
    transform: translateY(-1px);
}

/* selected */
.check-pill input:checked + span {
    background: rgba(96,165,250,0.18);
    border-color: var(--accent);
}

/* =========================
   REMOVE NUMBER INPUT SPINNERS
========================= */

.q-form input[type="number"]::-webkit-inner-spin-button,
.q-form input[type="number"]::-webkit-outer-spin-button {
    opacity: 1;
    transform: scale(1.2);
    filter: invert(0.7);
    cursor: pointer;
}

/* =========================
   EYE TEST TABLE
========================= */


.eye-grid {
    display: grid;

    /* NOT 50% 50% */
    grid-template-columns: 1fr 1fr;

    gap: 40px;   /* space between columns */

    margin-top: 20px;
}

.eye-column {
    min-width: 0;   /* prevents overflow */
}

.eye-column h3 {
    margin-top: 0;
    margin-bottom: 15px;
    text-align: center;
    color: var(--accent);
}

/* critical */
.eye-column input {
    box-sizing: border-box;
    width: 100%;
}

/* phone responsive */
@media (max-width: 700px) {
    .eye-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}


.conditional-field {
    display: none;
    margin-top: 10px;
}

.hidden {
    display: none;
}

.date-row {
    display: flex;
    gap: 10px;
    align-items: center;
    padding: 20px 20px 20px 0px;
}

/* equal visual balance */
.date-row input,
.date-row select {
    flex: 1;
    min-width: 0;
}

/* make sure numbers don't look ugly */
.date-row input {
    text-align: center;
}


/* PAIN SIDE SLIDER */
.pain-distribution {
    margin-top: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
    max-width: 100%;
}

.pain-labels {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-weight: bold;
}

.pain-sides {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    color: var(--muted);
    font-size: 14px;
}

#pain_distribution {
    width: 100%;
    cursor: pointer;
}

.checkbox-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 20px; /* row gap, column gap */
    width: 100%;
    align-items: start;
}

.pain-distribution input[type="range"] {
    width: 100%;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
/* PAIN SIDE SLIDER */