/*
 * CharbyChar visual refinement layer.
 *
 * This file intentionally comes after page-level styles. It keeps the existing
 * warm, tactile brand while reducing nested cards, tightening type hierarchy,
 * and giving the learning flow a calmer shared rhythm.
 */

:root {
    --color-page: #f7f4ee;
    --color-surface: #fffefa;
    --color-surface-subtle: #fbf8f3;
    --color-surface-muted: #f0ebe3;
    --color-text: #26211d;
    --color-text-muted: #716960;
    --color-border: #ded6cb;
    --color-border-soft: rgba(92, 76, 62, 0.16);
    --color-brand: #b43b32;
    --color-brand-hover: #8f2f29;
    --color-brand-soft: #f8e9e6;
    --shadow-flat: none;
    --shadow-soft: 0 14px 34px rgba(57, 43, 31, 0.065);
    --radius-small: 7px;
    --radius-medium: 12px;
    --radius-large: 16px;
    --content-width: 1180px;
    --account-width: 1080px;
}

body {
    font-size: 0.975rem;
    line-height: 1.58;
    letter-spacing: -0.008em;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    letter-spacing: -0.026em;
}

h1 {
    font-size: clamp(1.95rem, 3.5vw, 2.7rem);
}

h2 {
    font-size: clamp(1.35rem, 2.3vw, 1.85rem);
}

h3 {
    font-size: clamp(1.05rem, 1.6vw, 1.28rem);
}

button,
.btn {
    padding-inline: 1rem;
    font-weight: 600;
}

.surface,
.section-card,
.stat-card {
    border-color: var(--color-border-soft);
    box-shadow: none;
}

.page-template {
    gap: clamp(1.1rem, 2vw, 1.6rem);
}

.page-eyebrow,
.eyebrow {
    font-size: 0.7rem;
    letter-spacing: 0.105em;
}

.site-header {
    border-color: var(--color-border-soft);
    background: rgba(255, 254, 250, 0.94);
}

.site-header__inner {
    min-height: 68px;
}

.site-brand__logo {
    height: 42px;
}

.site-nav__links {
    gap: clamp(0.9rem, 1.7vw, 1.55rem);
}

.site-nav__link,
.site-utility-link {
    position: relative;
    font-size: 0.92rem;
    font-weight: 560;
}

.site-nav__link[aria-current="page"]::after {
    position: absolute;
    right: 0;
    bottom: 5px;
    left: 0;
    height: 2px;
    border-radius: 999px;
    background: var(--color-brand);
    content: "";
}

.language-form select {
    border-color: var(--color-border-soft);
    background-color: transparent;
}

.site-main {
    padding-block: clamp(1.8rem, 3.5vw, 2.8rem);
}

.site-footer {
    border-color: var(--color-border-soft);
    background: rgba(255, 254, 250, 0.72);
}

/* Learning home: one clear command area, then quiet supporting information. */
.learning-home__welcome {
    padding-inline: 0;
}

.learning-command-center {
    border-radius: var(--radius-large);
    background: var(--color-surface);
}

.learning-command-center__heading {
    padding: 1.35rem clamp(1.4rem, 3vw, 2.2rem);
    border-color: var(--color-border-soft);
}

.learning-command-center__heading h1 {
    font-size: clamp(1.55rem, 2.5vw, 2rem);
}

.next-lesson-panel,
.learning-command-center__goal {
    min-height: 15rem;
    padding: clamp(1.5rem, 3.5vw, 2.25rem);
}

.next-lesson-panel {
    border-color: var(--color-border-soft);
}

.next-lesson-panel__character > span {
    border-color: var(--color-border-soft);
    border-radius: 10px;
    background: #fffefa;
}

.learning-command-center__goal {
    background: #f1ece3;
}

.progress-track {
    height: 8px;
    background: #ddd5c9;
}

.learning-summary {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    padding-block: 0.35rem;
    border-top: 1px solid var(--color-border-soft);
    border-bottom: 1px solid var(--color-border-soft);
}

.summary-card {
    gap: 0.85rem;
    padding: 1rem clamp(0.8rem, 2vw, 1.4rem);
    border: 0;
    border-radius: 0;
    background: transparent;
}

.summary-card + .summary-card {
    border-left: 1px solid var(--color-border-soft);
}

.summary-card__icon {
    width: 2.4rem;
    height: 2.4rem;
    font-size: 1rem;
}

.summary-card__icon svg {
    width: 1rem;
    height: 1rem;
}

.summary-card strong {
    font-size: 1.55rem;
}

.summary-card div span {
    margin-top: 0;
    font-size: 0.82rem;
}

.learning-home__columns {
    grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.65fr);
    gap: clamp(1.5rem, 3vw, 2.5rem);
}

.recent-learning,
.quick-actions {
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
}

.quick-actions {
    padding-left: clamp(1.2rem, 3vw, 2rem);
    border-left: 1px solid var(--color-border-soft);
}

.recent-list,
.quick-action-list {
    gap: 0;
    border-top: 1px solid var(--color-border-soft);
}

.recent-item,
.quick-action {
    padding: 0.8rem 0.35rem;
    border: 0;
    border-bottom: 1px solid var(--color-border-soft);
    border-radius: 0;
}

.recent-item:hover,
.quick-action:hover {
    border-color: var(--color-border-soft);
    background: rgba(255, 254, 250, 0.7);
}

.recent-item__character,
.quick-action > span:first-child {
    width: 2.6rem;
    height: 2.6rem;
    border-color: var(--color-border-soft);
    border-radius: 7px;
    font-size: 1.45rem;
}

/* Character lesson: preserve the character/writing pairing and calm everything below it. */
.character-study {
    gap: clamp(1rem, 2vw, 1.45rem);
}

.character-hero {
    border-color: var(--color-border-soft);
    border-radius: var(--radius-medium);
}

.character-identity,
.stroke-card {
    padding: clamp(1.25rem, 2.6vw, 1.8rem);
}

.stroke-card {
    border-color: var(--color-border-soft);
}

.mastery-card {
    padding: 1.35rem 0;
    border-width: 1px 0;
    border-radius: 0;
    background: transparent;
}

.mastery-card__hint {
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.skill-progress {
    padding-top: 1rem;
    margin-top: 1rem;
    border-color: var(--color-border-soft);
}

.skill-progress ul {
    gap: 0;
    border-top: 1px solid var(--color-border-soft);
}

.skill-progress li {
    padding: 0.85rem 0.5rem;
    border: 0;
    border-bottom: 1px solid var(--color-border-soft);
    border-radius: 0;
    background: transparent;
}

.lesson-content {
    border-width: 1px 0 0;
    border-radius: 0;
    background: transparent;
}

.lesson-content__header {
    padding: 1.4rem 0 1rem;
}

.lesson-tabs {
    padding-inline: 0;
    border-color: var(--color-border-soft);
}

.lesson-panel {
    padding-inline: 0;
}

.meaning-card,
.example-card,
.vocabulary-card,
.dialogue-card,
.story-card {
    box-shadow: none;
}

/* Review: keep the active recall card prominent and flatten supporting help. */
.review-heading {
    padding-inline: 0;
}

.review-heading__stats {
    gap: 0;
    overflow: hidden;
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-medium);
    background: rgba(255, 254, 250, 0.65);
}

.review-count {
    min-width: 7rem;
    padding: 0.75rem 1rem;
    border: 0;
    border-radius: 0;
    background: transparent;
}

.review-count + .review-count {
    border-left: 1px solid var(--color-border-soft);
}

.review-card {
    border-color: rgba(92, 76, 62, 0.2);
    border-radius: var(--radius-large);
    background: var(--color-surface);
}

.review-explainer,
.review-history {
    padding: 1.25rem 0;
    border-width: 1px 0 0;
    border-radius: 0;
    background: transparent;
}

.review-explainer li {
    border-radius: 6px;
    background: rgba(234, 228, 218, 0.72);
}

/* Progress: present one continuous dashboard rather than a stack of boxes. */
.progress-hero {
    padding: 1rem 0 1.5rem;
    border: 0;
    border-bottom: 1px solid var(--color-border-soft);
    border-radius: 0;
    background: transparent;
}

.progress-avatar {
    width: 4.25rem;
    height: 4.25rem;
}

.progress-next-step {
    border-color: rgba(180, 59, 50, 0.18);
    background: linear-gradient(105deg, rgba(180, 59, 50, 0.075), rgba(255, 254, 250, 0.76));
}

.learning-preferences-summary {
    padding: 1rem 0;
    border-width: 1px 0;
    border-radius: 0;
    background: transparent;
}

.learning-preferences-summary__heading > span {
    width: 2.5rem;
    height: 2.5rem;
}

.progress-summary {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    border-top: 1px solid var(--color-border-soft);
    border-bottom: 1px solid var(--color-border-soft);
}

.progress-stat {
    padding: 1rem clamp(0.75rem, 2vw, 1.25rem);
    border: 0;
    border-radius: 0;
    background: transparent;
}

.progress-stat + .progress-stat {
    border-left: 1px solid var(--color-border-soft);
}

.progress-stat__icon {
    width: 2.35rem;
    height: 2.35rem;
}

.progress-stat strong {
    font-size: 1.55rem;
}

.progress-stat span {
    font-size: 0.82rem;
}

.progress-skill-summaries {
    gap: 0;
    border-bottom: 1px solid var(--color-border-soft);
}

.progress-skill-summary {
    padding: 1.1rem 1.4rem 1.35rem 0;
    border: 0;
    border-radius: 0;
    background: transparent;
}

.progress-skill-summary + .progress-skill-summary {
    padding-right: 0;
    padding-left: 1.4rem;
    border-left: 1px solid var(--color-border-soft);
}

.progress-skill-summary dl > div {
    background: rgba(237, 232, 223, 0.64);
}

.character-progress {
    padding: 1.4rem 0 0;
    border-width: 1px 0 0;
    border-radius: 0;
    background: transparent;
}

.character-records {
    gap: 0.65rem;
}

.character-record {
    min-height: 172px;
    border-color: var(--color-border-soft);
    border-radius: 9px;
    background: rgba(255, 254, 250, 0.7);
}

/* Library: the collection is the content; surrounding controls stay quiet. */
.frequency-page {
    gap: 1.25rem;
}

.frequency-hero {
    padding: 1rem 0 1.8rem;
    border-width: 0 0 1px;
    border-radius: 0;
    background: transparent;
}

.frequency-hero h1 {
    margin-bottom: 0.7rem;
}

.frequency-summary {
    gap: 1.5rem;
}

.frequency-summary > div {
    min-width: 120px;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
}

.frequency-summary > div + div {
    padding-left: 1.5rem;
    border-left: 1px solid var(--color-border-soft);
}

.frequency-browser {
    padding: 1rem 0 0;
    border: 0;
    border-radius: 0;
    background: transparent;
}

.frequency-filters {
    padding: 1rem 0;
    margin-top: 1.2rem;
    border-width: 1px 0;
    border-radius: 0;
    background: transparent;
}

.frequency-status-help {
    margin-top: 0.85rem;
}

.frequency-legend {
    padding: 0.8rem 0;
    margin: 0.8rem 0;
    border-color: var(--color-border-soft);
}

.frequency-grid {
    gap: 0.4rem;
}

.frequency-character {
    min-height: 80px;
    border-color: var(--color-border-soft);
    border-radius: 6px;
    background: rgba(255, 254, 250, 0.72);
}

/* Account entry pages retain one strong brand moment without heavy shadows. */
.auth-intro,
.auth-card {
    box-shadow: none;
}

.auth-intro {
    background: linear-gradient(145deg, #8f302a, #b33b32);
}

.auth-card {
    background: var(--color-surface);
}

@media (max-width: 960px) {
    .learning-home__columns {
        gap: 1.5rem;
    }

    .quick-actions {
        padding-top: 1.25rem;
        padding-left: 0;
        border-top: 1px solid var(--color-border-soft);
        border-left: 0;
    }
}

@media (max-width: 720px) {
    body {
        font-size: 0.95rem;
    }

    .site-header__inner {
        min-height: 64px;
    }

    .site-brand__logo {
        height: 36px;
    }

    .site-nav__link[aria-current="page"]::after {
        display: none;
    }

    .site-main {
        padding-block: 1.25rem 2rem;
    }

    .learning-summary {
        grid-template-columns: 1fr;
        padding-block: 0;
    }

    .summary-card + .summary-card {
        border-top: 1px solid var(--color-border-soft);
        border-left: 0;
    }

    .character-hero {
        border-radius: 10px;
    }

    .lesson-content__header {
        padding-top: 1.15rem;
    }

    .review-heading__stats {
        width: 100%;
    }

    .review-count {
        min-width: 0;
        flex: 1 1 30%;
        padding-inline: 0.45rem;
    }

    .progress-summary {
        grid-template-columns: 1fr;
    }

    .progress-stat + .progress-stat {
        border-top: 1px solid var(--color-border-soft);
        border-left: 0;
    }

    .progress-skill-summaries {
        border: 0;
    }

    .progress-skill-summary,
    .progress-skill-summary + .progress-skill-summary {
        padding: 1rem 0;
        border: 0;
        border-bottom: 1px solid var(--color-border-soft);
    }

    .frequency-hero {
        gap: 1.2rem;
    }

    .frequency-summary {
        width: 100%;
    }
}

@media (max-width: 520px) {
    .learning-command-center__heading,
    .next-lesson-panel,
    .learning-command-center__goal {
        padding: 1.2rem;
    }

    .next-lesson-panel__character {
        grid-template-columns: 5.6rem minmax(0, 1fr);
    }

    .next-lesson-panel__character > span {
        font-size: 3.8rem;
    }

    .character-pager__link span:not([aria-hidden="true"]) {
        font-size: 0.78rem;
    }

    .frequency-summary {
        gap: 1rem;
    }

    .frequency-summary > div + div {
        padding-left: 1rem;
    }
}