/* ===== Design tokens ===== */
:root {
    --color-primary: #4338ca;
    --color-primary-hover: #3730a3;
    --color-primary-light: #eef2ff;
    --color-success: #15803d;
    --color-success-bg: #f0fdf4;
    --color-success-border: #bbf7d0;
    --color-danger: #b91c1c;
    --color-danger-bg: #fef2f2;
    --color-danger-border: #fecaca;
    --color-warning: #92400e;
    --color-warning-bg: #fffbeb;
    --color-warning-border: #fde68a;
    --color-text: #1f2430;
    --color-text-muted: #636b7a;
    --color-border: #e2e5eb;
    --color-surface: #ffffff;
    --color-bg: #f4f5f8;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06);
    --shadow-md: 0 4px 10px rgba(16, 24, 40, 0.08);
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* ===== Reset & base ===== */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--font-sans);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.55;
    overflow-wrap: break-word;
}

h1, h2, h3, h4 {
    line-height: 1.25;
    color: var(--color-text);
}

h1 {
    font-size: 1.75rem;
    margin: 0 0 0.75rem;
}

h2 {
    font-size: 1.25rem;
    margin: 2rem 0 0.75rem;
}

h3, h4 {
    font-size: 1.05rem;
    margin: 1.25rem 0 0.5rem;
}

p {
    margin: 0 0 1rem;
}

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

a:hover {
    text-decoration: underline;
}

pre {
    font-family: inherit;
    white-space: pre-wrap;
}

img {
    max-width: 100%;
    border-radius: var(--radius-sm);
}

/* ===== Layout ===== */
.page {
    max-width: 760px;
    margin: 0 auto;
    padding: 0 1.25rem 4rem;
}

/* ===== Navbar ===== */
.navbar {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 2rem;
}

.navbar-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0.8rem 1.25rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    row-gap: 0.5rem;
    column-gap: 1.25rem;
    font-size: 0.92rem;
}

.navbar a {
    color: var(--color-text);
    font-weight: 500;
    white-space: nowrap;
}

.navbar a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.navbar-brand {
    font-weight: 700;
    color: var(--color-primary) !important;
    font-size: 1.05rem;
    margin-right: auto;
    white-space: nowrap;
}

.navbar-group {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.9rem;
}

.navbar-group:last-child {
    margin-left: auto;
}

.navbar-user {
    color: var(--color-text-muted);
    font-weight: 400 !important;
}

.navbar-admin-btn {
    background: var(--color-primary-light);
    color: var(--color-primary) !important;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
}

.navbar-admin-btn:hover {
    background: var(--color-primary);
    color: #fff !important;
}

.navbar-icon-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--color-text-muted) !important;
    padding: 0.3rem;
    border-radius: var(--radius-sm);
}

.navbar-icon-btn:hover {
    color: var(--color-primary) !important;
    background: var(--color-bg);
}

.navbar-icon-circle-user {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.navbar-icon-circle svg {
    width: 11px;
    height: 11px;
}

/* ===== Alerts / flash messages ===== */
.alert {
    padding: 0.8rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.alert-success {
    background: var(--color-success-bg);
    border-color: var(--color-success-border);
    color: var(--color-success);
}

.alert-danger {
    background: var(--color-danger-bg);
    border-color: var(--color-danger-border);
    color: var(--color-danger);
}

.alert-warning {
    background: var(--color-warning-bg);
    border-color: var(--color-warning-border);
    color: var(--color-warning);
}

/* ===== Cards ===== */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
    margin-bottom: 1.25rem;
    box-shadow: var(--shadow-sm);
}

.card-title {
    font-weight: 600;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 0.5rem;
}

/* ===== Buttons ===== */
.btn, button[type="submit"], button[data-action*="player"] {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.6rem 1.1rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    background: var(--color-primary);
    color: #fff;
    transition: background-color 0.15s ease;
}

.btn:hover, button[type="submit"]:hover {
    background: var(--color-primary-hover);
    text-decoration: none;
}

.btn:disabled, button:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

button[data-action*="player"] {
    background: var(--color-surface);
    color: var(--color-text);
    border-color: var(--color-border);
    font-weight: 500;
}

button[data-action*="player"]:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
}

/* ===== Forms ===== */
form {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.3rem;
    color: var(--color-text);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
textarea,
select {
    width: 100%;
    font-family: inherit;
    font-size: 0.95rem;
    padding: 0.55rem 0.7rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    color: var(--color-text);
    margin-bottom: 1rem;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

fieldset {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
    margin: 0 0 1.25rem;
    background: var(--color-surface);
}

legend {
    font-weight: 600;
    padding: 0 0.4rem;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

/* Checkbox / radio rows (part selectors, answer options).
   Deliberately not flexbox: a flex item containing a long text run refuses to
   shrink below its unwrapped width (min-width:auto), which overflowed the
   viewport on mobile. Plain block flow + an indent wraps text correctly. */
fieldset label,
.page ul label {
    display: block;
    position: relative;
    font-weight: 400;
    padding: 0.5rem 0.65rem 0.5rem 2rem;
    margin: 0 0 0.35rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
}

fieldset label:hover,
.page ul label:hover {
    background: var(--color-bg);
}

input[type="checkbox"],
input[type="radio"] {
    position: absolute;
    left: 0.65rem;
    top: 0.65rem;
    accent-color: var(--color-primary);
    width: 1.05rem;
    height: 1.05rem;
}

.page ul {
    list-style: none;
    margin: 0 0 1rem;
    padding: 0;
}

/* ===== Answer review (practice correction) ===== */
.answer-correct {
    color: var(--color-success);
    font-weight: 600;
    background: var(--color-success-bg);
}

.answer-wrong {
    color: var(--color-danger);
    font-weight: 600;
    text-decoration: line-through;
    background: var(--color-danger-bg);
}

/* ===== Listening / timer widgets ===== */
[data-controller~="mock-listening-player"],
[data-controller~="practice-player"] {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
}

[data-mock-listening-player-target="statusText"] {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

[data-controller="mock-reading-timer"] {
    background: var(--color-primary-light);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

[data-mock-reading-timer-target="display"] {
    font-variant-numeric: tabular-nums;
    font-size: 1.1rem;
    color: var(--color-primary);
}

/* ===== Dashboard lists ===== */
.page ul li {
    padding: 0.55rem 0.1rem;
    border-bottom: 1px solid var(--color-border);
}

.page ul li:last-child {
    border-bottom: none;
}