.student-directory-hero {
    border-bottom: 1px solid var(--line);
    background: color-mix(in srgb, var(--paper) 82%, var(--teal-soft));
}

.student-directory-hero-inner {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(420px, 0.75fr);
    align-items: center;
    gap: 56px;
    min-height: 430px;
    padding-top: 48px;
    padding-bottom: 48px;
}

.student-directory-hero-copy {
    max-width: 760px;
}

.student-directory-hero h1 {
    max-width: 720px;
    margin: 8px 0 16px;
    color: var(--ink);
    font-size: 4.35rem;
    line-height: 1.02;
    letter-spacing: 0;
}

.student-directory-hero-copy > p:not(.eyebrow) {
    max-width: 690px;
    margin: 0;
    color: var(--ink-soft);
    font-size: 1.08rem;
    line-height: 1.7;
}

.student-directory-hero-actions,
.student-profile-actions,
.student-complete-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 24px;
}

.student-teaching-loop {
    display: grid;
    gap: 0;
    margin: 0;
    padding: 0;
    overflow: hidden;
    list-style: none;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
    box-shadow: var(--shadow);
}

.student-teaching-loop li {
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 2px 14px;
    align-items: center;
    padding: 20px 22px;
}

.student-teaching-loop li + li {
    border-top: 1px solid var(--line);
}

.student-teaching-loop li > span {
    grid-row: 1 / span 2;
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border: 1px solid color-mix(in srgb, var(--teal) 45%, var(--line));
    border-radius: 50%;
    color: var(--teal-deep);
    background: var(--teal-soft);
    font-weight: 900;
}

.student-teaching-loop strong {
    color: var(--ink);
    font-size: 1rem;
}

.student-teaching-loop small {
    color: var(--ink-soft);
    font-size: 0.8rem;
}

.student-directory-section {
    background: var(--paper);
}

.student-directory-heading {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(300px, 0.64fr);
    align-items: end;
    gap: 40px;
    margin-bottom: 24px;
}

.student-directory-heading h2,
.student-evidence-layout h2 {
    margin: 5px 0 0;
    color: var(--ink);
    font-size: 2.7rem;
    line-height: 1.1;
    letter-spacing: 0;
}

.student-directory-heading > p,
.student-evidence-layout > div > p:last-child {
    margin: 0;
    color: var(--ink-soft);
    line-height: 1.65;
}

.student-card-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.student-card {
    display: flex;
    min-width: 0;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--line);
    border-top: 3px solid var(--student-accent);
    border-radius: 8px;
    background: var(--surface);
    transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.student-card:hover {
    transform: translateY(-3px);
    border-color: color-mix(in srgb, var(--student-accent) 55%, var(--line));
    box-shadow: var(--control-hover-shadow);
}

.student-card-media {
    position: relative;
    display: block;
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: var(--surface-muted);
}

.student-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 25%;
    transition: transform 220ms ease;
}

.student-card:hover .student-card-media img {
    transform: scale(1.025);
}

.student-card-type {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 5px 8px;
    border: 1px solid color-mix(in srgb, var(--surface) 76%, transparent);
    border-radius: 6px;
    color: var(--ink);
    background: color-mix(in srgb, var(--surface) 90%, transparent);
    box-shadow: 0 4px 12px rgba(23, 52, 58, 0.14);
    font-size: 0.68rem;
    font-weight: 900;
    text-transform: uppercase;
}

.student-card-body {
    display: flex;
    flex: 1;
    min-width: 0;
    flex-direction: column;
    padding: 17px;
}

.student-card-title-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.student-card-title-row h3 {
    margin: 0;
    font-size: 1.22rem;
    line-height: 1.2;
}

.student-card-title-row h3 a {
    color: var(--ink);
}

.student-card-title-row div > p {
    margin: 5px 0 0;
    color: var(--ink-soft);
    font-size: 0.78rem;
    font-weight: 700;
    line-height: 1.35;
}

.student-card-title-row > span {
    flex: 0 0 auto;
    max-width: 88px;
    color: var(--teal-deep);
    font-size: 0.67rem;
    font-weight: 900;
    line-height: 1.25;
    text-align: right;
    text-transform: uppercase;
}

.student-card-summary {
    margin: 14px 0;
    color: var(--ink-soft);
    font-size: 0.86rem;
    line-height: 1.55;
}

.student-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.student-card-tags span,
.student-topic-suggestions button {
    padding: 5px 8px;
    border: 1px solid var(--line);
    border-radius: 6px;
    color: var(--ink-soft);
    background: var(--surface-soft);
    font-size: 0.7rem;
    font-weight: 800;
}

.student-card-progress {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 7px;
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--line);
}

.student-card-progress span {
    color: var(--ink-soft);
    font-size: 0.7rem;
}

.student-card-progress strong {
    color: var(--ink);
}

.student-card-progress .is-wide {
    grid-column: 1 / -1;
}

.student-card-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
    margin-top: auto;
    padding-top: 16px;
}

.student-card-actions .button {
    min-height: 42px;
    padding: 9px 12px;
    font-size: 0.82rem;
}

.student-teach-button {
    color: #fff;
    border-color: color-mix(in srgb, var(--student-accent, var(--teal-deep)) 80%, #000);
    background: var(--student-accent, var(--teal-deep));
}

.student-teach-button img {
    filter: brightness(0) invert(1);
}

.student-teach-button:hover,
.student-teach-button:focus-visible {
    color: #fff;
    border-color: color-mix(in srgb, var(--student-accent, var(--teal-deep)) 70%, #000);
    background: color-mix(in srgb, var(--student-accent, var(--teal-deep)) 82%, #000);
    box-shadow: var(--control-hover-shadow);
    transform: translateY(-1px);
}

.student-evidence-section {
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.student-evidence-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
    gap: 54px;
    align-items: start;
}

.student-evidence-layout > div > p:last-child {
    margin-top: 16px;
}

.student-evidence-points {
    display: grid;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
}

.student-evidence-points article {
    display: grid;
    grid-template-columns: minmax(130px, 0.38fr) minmax(0, 1fr);
    gap: 20px;
    padding: 18px 20px;
}

.student-evidence-points article + article {
    border-top: 1px solid var(--line);
}

.student-evidence-points strong {
    color: var(--ink);
}

.student-evidence-points span {
    color: var(--ink-soft);
    font-size: 0.86rem;
    line-height: 1.5;
}

.student-disclosure-band {
    padding: 20px 0;
    background: var(--paper);
}

.student-disclosure-band .section-inner {
    display: flex;
    align-items: baseline;
    gap: 18px;
}

.student-disclosure-band strong {
    flex: 0 0 auto;
    color: var(--ink);
}

.student-disclosure-band p {
    margin: 0;
    color: var(--ink-soft);
    font-size: 0.85rem;
}

.student-profile-hero {
    border-bottom: 1px solid var(--line);
    background:
        radial-gradient(circle at 12% 18%, color-mix(in srgb, var(--student-accent) 12%, transparent), transparent 34%),
        color-mix(in srgb, var(--paper) 88%, var(--surface-muted));
}

.student-profile-hero-inner {
    display: grid;
    grid-template-columns: minmax(250px, 310px) minmax(0, 1fr);
    gap: clamp(30px, 4vw, 54px);
    align-items: start;
    padding-top: 42px;
    padding-bottom: 46px;
}

.student-profile-portrait {
    position: relative;
    margin: 0;
    overflow: hidden;
    aspect-ratio: 4 / 5;
    border: 1px solid var(--line);
    border-top: 5px solid var(--student-accent);
    border-radius: 16px;
    background: var(--surface-muted);
    box-shadow: var(--shadow);
}

.student-profile-portrait img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.student-profile-portrait figcaption {
    position: absolute;
    left: 12px;
    bottom: 12px;
    padding: 6px 9px;
    border: 1px solid color-mix(in srgb, var(--surface) 80%, transparent);
    border-radius: 6px;
    color: var(--ink);
    background: color-mix(in srgb, var(--surface) 91%, transparent);
    font-size: 0.72rem;
    font-weight: 900;
    text-transform: uppercase;
}

.student-profile-intro h1 {
    margin: 5px 0 12px;
    color: var(--ink);
    font-size: clamp(3rem, 5vw, 4.15rem);
    line-height: 0.98;
    letter-spacing: 0;
}

.student-profile-title {
    margin: 0 0 18px;
    color: var(--teal-deep);
    font-weight: 800;
}

.student-profile-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 18px;
}

.student-profile-meta span,
.student-profile-subjects span {
    padding: 7px 10px;
    border: 1px solid color-mix(in srgb, var(--student-accent) 24%, var(--line));
    border-radius: 999px;
    color: var(--ink-soft);
    background: color-mix(in srgb, var(--surface) 92%, var(--student-accent));
    font-size: 0.76rem;
    font-weight: 800;
}

.student-profile-meta span:first-child {
    color: color-mix(in srgb, var(--student-accent) 82%, var(--ink));
}

.student-profile-summary {
    max-width: 820px;
    margin: 0;
    color: var(--ink-soft);
    font-size: 1.08rem;
    line-height: 1.65;
}

.student-profile-subjects {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-top: 16px;
}

.student-profile-subjects span {
    padding: 6px 9px;
    background: var(--surface);
    font-size: 0.72rem;
}

.student-profile-intro blockquote {
    max-width: 820px;
    margin: 18px 0 0;
    padding: 14px 17px;
    border-left: 4px solid var(--student-accent);
    border-radius: 0 8px 8px 0;
    color: var(--ink);
    background: var(--surface);
    font-size: 0.9rem;
    line-height: 1.6;
}

.student-profile-intro blockquote span {
    color: var(--student-accent);
    font-weight: 900;
}

.student-classroom-launch {
    max-width: 860px;
    margin-top: 24px;
    overflow: hidden;
    border: 1px solid color-mix(in srgb, var(--student-accent) 30%, var(--line));
    border-top: 4px solid var(--student-accent);
    border-radius: 13px;
    background: var(--surface);
    box-shadow: 0 16px 42px color-mix(in srgb, var(--student-accent) 10%, transparent);
}

.student-classroom-launch > header {
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: 18px;
    padding: 18px 20px 0;
}

.student-classroom-launch h2 {
    margin: 4px 0 0;
    color: var(--ink);
    font-size: 1.3rem;
    letter-spacing: 0;
}

.student-classroom-live-badge {
    display: inline-flex;
    align-items: center;
    flex: 0 0 auto;
    gap: 7px;
    padding: 7px 9px;
    border-radius: 999px;
    color: var(--teal-deep);
    background: var(--teal-soft);
    font-size: 0.7rem;
    font-weight: 900;
    text-transform: uppercase;
}

.student-classroom-live-badge i {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--teal);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--teal) 16%, transparent);
}

.student-classroom-launch > p {
    margin: 10px 20px 0;
    color: var(--ink-soft);
    font-size: 0.86rem;
    line-height: 1.55;
}

.student-classroom-setup {
    margin-top: 16px;
    border-top: 1px solid var(--line);
}

.student-classroom-setup-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 11px;
    padding: 16px 20px 0;
}

.student-classroom-setup-grid label > span,
.student-classroom-setup-grid label > small {
    display: block;
}

.student-classroom-setup-grid label > span {
    margin-bottom: 6px;
    color: var(--ink);
    font-size: 0.72rem;
    font-weight: 900;
}

.student-classroom-setup-grid input,
.student-classroom-setup-grid select,
.student-classroom-setup-grid textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 7px;
    color: var(--ink);
    background: var(--surface-soft);
    font: inherit;
}

.student-classroom-setup-grid input,
.student-classroom-setup-grid select {
    min-height: 42px;
    padding: 8px 10px;
}

.student-classroom-setup-grid textarea {
    min-height: 58px;
    padding: 9px 10px;
    resize: vertical;
    line-height: 1.4;
}

.student-classroom-setup-grid input:focus,
.student-classroom-setup-grid select:focus,
.student-classroom-setup-grid textarea:focus {
    outline: 3px solid var(--control-focus-ring);
    border-color: var(--student-accent);
}

.student-classroom-goal {
    grid-column: 1 / -1;
}

.student-classroom-modes {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    padding: 16px 20px 18px;
}

.student-classroom-mode {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr) auto;
    gap: 11px;
    align-items: center;
    min-width: 0;
    padding: 13px;
    border: 1px solid var(--line);
    border-radius: 10px;
    color: var(--ink);
    background: var(--surface-soft);
    width: 100%;
    font: inherit;
    text-align: left;
    cursor: pointer;
    text-decoration: none;
    transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.student-classroom-mode:hover,
.student-classroom-mode:focus-visible {
    transform: translateY(-2px);
    border-color: color-mix(in srgb, var(--student-accent) 58%, var(--line));
    box-shadow: 0 9px 22px color-mix(in srgb, var(--student-accent) 12%, transparent);
}

.student-classroom-mode.is-primary {
    border-color: color-mix(in srgb, var(--student-accent) 55%, var(--line));
    background: color-mix(in srgb, var(--student-accent) 9%, var(--surface));
}

.student-classroom-mode-icon {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border-radius: 9px;
    background: color-mix(in srgb, var(--student-accent) 14%, var(--surface));
}

.student-classroom-mode strong,
.student-classroom-mode small {
    display: block;
}

.student-classroom-mode strong {
    font-size: 0.9rem;
}

.student-classroom-mode small {
    margin-top: 3px;
    color: var(--ink-soft);
    font-size: 0.72rem;
    line-height: 1.4;
}

.student-classroom-mode b {
    color: var(--student-accent);
    font-size: 1.1rem;
}

.student-classroom-text-mode {
    display: block;
    margin: -5px 20px 16px;
    padding: 0;
    border: 0;
    color: var(--teal-deep);
    background: transparent;
    font: inherit;
    font-size: 0.76rem;
    font-weight: 800;
    text-decoration: underline;
    cursor: pointer;
}

.student-classroom-text-mode:hover,
.student-classroom-text-mode:focus-visible {
    color: var(--student-accent);
}

.student-classroom-launch > footer {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    padding: 12px 20px;
    border-top: 1px solid var(--line);
    color: var(--ink-muted);
    background: color-mix(in srgb, var(--surface-soft) 72%, var(--paper));
    font-size: 0.76rem;
}

.student-classroom-launch > footer a {
    color: var(--teal-deep);
    font-weight: 800;
}

.student-profile-progress {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
}

.student-profile-progress span {
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
    color: var(--ink-soft);
    background: var(--surface-soft);
    font-size: 0.76rem;
}

.student-profile-progress strong {
    color: var(--ink);
}

.student-profile-section {
    background: var(--paper);
}

.student-profile-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(285px, 330px);
    gap: 24px;
    align-items: start;
}

.student-profile-main {
    display: grid;
    gap: 18px;
}

.student-profile-panel,
.student-profile-aside,
.student-session-setup,
.student-session-chat,
.student-session-complete,
.student-learning-signal,
.student-coach-note,
.student-next-probe {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
}

.student-profile-panel {
    padding: 24px;
}

.student-profile-panel h2 {
    margin: 5px 0 12px;
    color: var(--ink);
    font-size: 1.55rem;
    letter-spacing: 0;
}

.student-profile-panel > p:not(.eyebrow),
.student-personality-note {
    margin: 0;
    color: var(--ink-soft);
    line-height: 1.7;
}

.student-personality-note {
    margin-top: 16px !important;
    padding-top: 16px;
    border-top: 1px solid var(--line);
}

.student-personality-note strong {
    color: var(--ink);
}

.student-profile-split {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
}

.student-profile-split > div + div {
    padding-left: 28px;
    border-left: 1px solid var(--line);
}

.student-profile-split h3,
.student-profile-aside h2 {
    margin: 0 0 10px;
    color: var(--ink);
    font-size: 0.91rem;
}

.student-check-list,
.student-warning-list,
.student-profile-aside ul {
    display: grid;
    gap: 9px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.student-check-list li,
.student-warning-list li,
.student-profile-aside li {
    position: relative;
    padding-left: 20px;
    color: var(--ink-soft);
    font-size: 0.86rem;
    line-height: 1.5;
}

.student-check-list li::before,
.student-warning-list li::before,
.student-profile-aside li::before {
    position: absolute;
    left: 0;
    top: 0.12em;
    color: var(--student-accent, var(--teal-deep));
    font-weight: 900;
    content: '\2022';
}

.student-goal-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.student-goal-grid > div {
    display: grid;
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 10px;
    align-items: start;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: var(--surface-soft);
}

.student-goal-grid span {
    display: grid;
    place-items: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    color: #fff;
    background: var(--student-accent, var(--teal-deep));
    font-size: 0.72rem;
    font-weight: 900;
}

.student-goal-grid p {
    margin: 0;
    color: var(--ink-soft);
    font-size: 0.82rem;
    line-height: 1.45;
}

.student-profile-aside {
    overflow: hidden;
    position: sticky;
    top: 88px;
}

.student-profile-aside section {
    padding: 19px;
}

.student-profile-aside section + section {
    border-top: 1px solid var(--line);
}

.student-profile-aside .student-profile-disclosure {
    background: var(--amber-soft);
}

.student-profile-disclosure p {
    margin: 0;
    color: var(--amber-ink);
    font-size: 0.78rem;
    line-height: 1.55;
}

.page-student-teach .site-footer {
    display: none;
}

.page-student-teach main {
    min-height: calc(100vh - 70px);
    background: var(--paper);
}

.student-practice-shell {
    min-height: calc(100vh - 70px);
}

.student-practice-header {
    display: grid;
    grid-template-columns: 38px 52px minmax(0, 1fr) auto;
    gap: 12px;
    align-items: center;
    min-height: 82px;
    padding: 9px 20px;
    border-bottom: 1px solid var(--line);
    background: var(--surface);
}

.student-practice-back {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--line);
    border-radius: 6px;
    color: var(--ink);
    background: var(--surface-soft);
}

.student-practice-back:hover {
    border-color: var(--student-accent);
    color: var(--student-accent);
    transform: translateX(-2px);
}

.student-practice-header > img {
    width: 48px;
    height: 60px;
    object-fit: cover;
    border: 2px solid var(--student-accent);
    border-radius: 6px;
}

.student-practice-header > div:nth-child(3) > span,
.student-session-bar span,
.student-learning-signal-heading span,
.student-coach-note > span,
.student-next-probe > span,
.student-complete-grid span {
    color: var(--teal-deep);
    font-size: 0.67rem;
    font-weight: 900;
    text-transform: uppercase;
}

.student-practice-header h1 {
    margin: 1px 0 0;
    color: var(--ink);
    font-size: 1.05rem;
    line-height: 1.2;
}

.student-practice-header p {
    margin: 2px 0 0;
    color: var(--ink-soft);
    font-size: 0.73rem;
}

.student-practice-header-stats {
    display: flex;
    gap: 8px;
}

.student-practice-header-stats span {
    min-width: 94px;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: var(--surface-soft);
}

.student-practice-header-stats small,
.student-practice-header-stats strong {
    display: block;
}

.student-practice-header-stats small {
    color: var(--ink-soft);
    font-size: 0.62rem;
    font-weight: 800;
    text-transform: uppercase;
}

.student-practice-header-stats strong {
    margin-top: 1px;
    color: var(--ink);
}

.student-practice-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 330px;
    gap: 18px;
    max-width: 1500px;
    min-height: calc(100vh - 152px);
    margin: 0 auto;
    padding: 18px;
}

.student-practice-main {
    min-width: 0;
}

.student-session-setup {
    max-width: 880px;
    margin: 18px auto;
    padding: 28px;
}

.student-session-setup-heading h2,
.student-session-complete h2 {
    margin: 5px 0 9px;
    color: var(--ink);
    font-size: 1.8rem;
    letter-spacing: 0;
}

.student-session-setup-heading > p:last-child {
    margin: 0;
    color: var(--ink-soft);
}

.student-session-setup form {
    display: grid;
    gap: 20px;
    margin-top: 24px;
}

.student-setup-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.student-session-setup form > label > span,
.student-setup-grid label > span,
.student-session-setup legend {
    display: block;
    margin-bottom: 8px;
    color: var(--ink);
    font-size: 0.78rem;
    font-weight: 900;
}

.student-session-setup form label > small {
    display: block;
    margin-top: 6px;
    color: var(--ink-soft);
    font-size: 0.7rem;
    line-height: 1.4;
}

.student-session-setup input[type='text'],
.student-session-setup select,
.student-session-setup textarea,
.student-message-composer textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 7px;
    color: var(--ink);
    background: var(--surface-soft);
    font: inherit;
}

.student-session-setup input[type='text'] {
    min-height: 48px;
    padding: 11px 13px;
}

.student-session-setup select {
    min-height: 48px;
    padding: 11px 36px 11px 13px;
}

.student-session-setup textarea {
    min-height: 82px;
    padding: 11px 13px;
    resize: vertical;
    line-height: 1.5;
}

.student-session-setup input:focus,
.student-session-setup select:focus,
.student-session-setup textarea:focus,
.student-message-composer textarea:focus {
    outline: 3px solid var(--control-focus-ring);
    border-color: var(--student-accent);
}

.student-session-setup fieldset {
    margin: 0;
    padding: 0;
    border: 0;
}

.student-style-options {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 9px;
}

.student-style-options label {
    position: relative;
}

.student-style-options input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.student-style-options label > span {
    display: block;
    min-height: 86px;
    padding: 13px;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: var(--surface-soft);
    cursor: pointer;
    transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.student-style-options label > span:hover {
    border-color: color-mix(in srgb, var(--student-accent) 55%, var(--line));
    transform: translateY(-1px);
}

.student-style-options input:checked + span {
    border-color: var(--student-accent);
    background: color-mix(in srgb, var(--surface) 86%, var(--teal-soft));
    box-shadow: inset 3px 0 0 var(--student-accent);
}

.student-style-options strong,
.student-style-options small {
    display: block;
}

.student-style-options strong {
    color: var(--ink);
    font-size: 0.87rem;
}

.student-style-options small {
    margin-top: 5px;
    color: var(--ink-soft);
    font-size: 0.72rem;
    line-height: 1.4;
}

.student-topic-suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}

.student-topic-suggestions button {
    cursor: pointer;
}

.student-topic-suggestions button:hover {
    border-color: var(--student-accent);
    color: var(--student-accent);
    background: var(--surface);
}

.student-session-setup form > .student-teach-button {
    justify-self: start;
}

.student-setup-error {
    margin: 0;
    padding: 10px 12px;
    border: 1px solid color-mix(in srgb, var(--danger) 42%, var(--line));
    border-radius: 6px;
    color: var(--danger);
    background: color-mix(in srgb, var(--danger) 8%, var(--surface));
    font-weight: 800;
    line-height: 1.45;
}

.student-session-chat {
    display: flex;
    height: calc(100vh - 190px);
    min-height: 570px;
    flex-direction: column;
    overflow: hidden;
}

.student-session-chat[hidden],
.student-session-setup[hidden],
.student-session-complete[hidden],
.student-response-status[hidden] {
    display: none !important;
}

.student-session-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 15px;
    border-bottom: 1px solid var(--line);
    background: var(--surface-soft);
}

.student-session-bar strong {
    display: block;
    margin-top: 2px;
    color: var(--ink);
    font-size: 0.9rem;
}

.student-session-context {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 6px;
}

.student-session-context span {
    padding: 3px 7px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--ink-soft);
    background: var(--surface);
    font-size: 0.67rem;
    font-weight: 800;
}

.student-session-bar [data-student-session-goal] {
    max-width: 680px;
    margin: 7px 0 0;
    color: var(--ink-soft);
    font-size: 0.72rem;
    line-height: 1.45;
}

.student-message-list {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 20px;
}

.student-message {
    display: grid;
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 10px;
    max-width: 760px;
    margin-bottom: 18px;
}

.student-message.is-teacher {
    grid-template-columns: minmax(0, 1fr);
    max-width: 700px;
    margin-left: auto;
}

.student-message-avatar {
    width: 36px;
    height: 45px;
    object-fit: cover;
    border: 1px solid var(--line);
    border-radius: 6px;
}

.student-message-bubble {
    min-width: 0;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 8px;
    color: var(--ink);
    background: var(--surface-soft);
    line-height: 1.58;
}

.student-message.is-teacher .student-message-bubble {
    color: #fff;
    border-color: color-mix(in srgb, var(--student-accent) 75%, #000);
    background: var(--student-accent);
}

.student-message-bubble p {
    margin: 0 0 8px;
}

.student-message-bubble p:last-child {
    margin-bottom: 0;
}

.student-message-meta {
    display: block;
    margin-top: 5px;
    color: var(--ink-soft);
    font-size: 0.66rem;
}

.student-message.is-teacher .student-message-meta {
    color: color-mix(in srgb, #fff 82%, transparent);
    text-align: right;
}

.student-response-status {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 20px;
    border-top: 1px solid var(--line);
    background: var(--surface-soft);
}

.student-response-status > span {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--student-accent);
    animation: student-thinking 900ms ease-in-out infinite alternate;
}

.student-response-status p {
    margin: 0;
    color: var(--ink-soft);
    font-size: 0.75rem;
}

.student-response-status.is-error {
    border-color: color-mix(in srgb, var(--coral) 55%, var(--line));
    background: var(--danger-soft);
}

.student-response-status.is-error > span {
    background: var(--coral);
    animation: none;
}

.student-response-status.is-error p {
    color: var(--danger-ink);
}

@keyframes student-thinking {
    to { opacity: 0.35; transform: scale(0.72); }
}

.student-message-composer {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 46px;
    gap: 9px;
    padding: 12px;
    border-top: 1px solid var(--line);
    background: var(--surface);
}

.student-message-composer textarea {
    min-height: 66px;
    max-height: 160px;
    resize: vertical;
    padding: 10px 12px;
    line-height: 1.45;
}

.student-message-composer button {
    align-self: stretch;
    border: 1px solid color-mix(in srgb, var(--student-accent) 75%, #000);
    border-radius: 7px;
    color: #fff;
    background: var(--student-accent);
    cursor: pointer;
}

.student-message-composer button:hover {
    background: color-mix(in srgb, var(--student-accent) 82%, #000);
    box-shadow: var(--control-hover-shadow);
    transform: translateY(-1px);
}

.student-message-composer button img {
    filter: brightness(0) invert(1);
}

.student-message-composer button:disabled,
.student-session-setup button:disabled {
    opacity: 0.55;
    cursor: wait;
    transform: none;
}

.student-coach-rail {
    display: grid;
    align-content: start;
    gap: 10px;
}

.student-learning-signal,
.student-coach-note,
.student-next-probe {
    padding: 16px;
}

.student-learning-signal-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.student-learning-signal-heading > div > strong {
    display: block;
    margin-top: 2px;
    color: var(--ink);
    font-size: 1rem;
    text-transform: capitalize;
}

.student-confidence {
    color: var(--ink-soft) !important;
    font-size: 0.65rem !important;
}

.student-confidence strong {
    color: var(--student-accent);
    font-size: 1rem;
}

.student-mastery-track {
    overflow: hidden;
    height: 7px;
    margin: 12px 0 15px;
    border-radius: 999px;
    background: var(--surface-muted);
}

.student-mastery-track span {
    display: block;
    width: 0;
    height: 100%;
    background: var(--student-accent);
    transition: width 300ms ease;
}

.student-learning-signal dl {
    display: grid;
    gap: 12px;
    margin: 0;
}

.student-learning-signal dl div {
    padding-top: 11px;
    border-top: 1px solid var(--line);
}

.student-learning-signal dt {
    color: var(--ink);
    font-size: 0.72rem;
    font-weight: 900;
}

.student-learning-signal dd,
.student-coach-note p,
.student-next-probe p {
    margin: 4px 0 0;
    color: var(--ink-soft);
    font-size: 0.78rem;
    line-height: 1.5;
}

.student-coach-note {
    border-left: 3px solid var(--student-accent);
}

.student-next-probe {
    background: var(--amber-soft);
}

.student-next-probe > span,
.student-next-probe p {
    color: var(--amber-ink);
}

.student-practice-disclosure {
    margin: 4px 0 0;
    color: var(--ink-soft);
    font-size: 0.7rem;
    line-height: 1.5;
}

.student-session-complete {
    max-width: 860px;
    margin: 40px auto;
    padding: 28px;
}

.student-complete-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-top: 22px;
}

.student-complete-grid article {
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: var(--surface-soft);
}

.student-complete-grid p {
    margin: 7px 0 0;
    color: var(--ink);
    line-height: 1.55;
}

@media (max-width: 1180px) {
    .student-card-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .student-practice-layout {
        grid-template-columns: minmax(0, 1fr) 290px;
    }
}

@media (max-width: 900px) {
    .student-directory-hero h1 {
        font-size: 3rem;
    }

    .student-profile-intro h1 {
        font-size: 3.4rem;
    }

    .student-directory-hero-inner,
    .student-directory-heading,
    .student-evidence-layout,
    .student-profile-hero-inner,
    .student-profile-grid,
    .student-practice-layout {
        grid-template-columns: minmax(0, 1fr);
    }

    .student-directory-hero-inner {
        gap: 28px;
        min-height: 0;
    }

    .student-profile-portrait {
        max-width: 390px;
    }

    .student-profile-aside {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        position: static;
    }

    .student-profile-aside section + section {
        border-top: 0;
        border-left: 1px solid var(--line);
    }

    .student-coach-rail {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .student-practice-disclosure {
        grid-column: 1 / -1;
    }

    .student-session-chat {
        height: 68vh;
    }
}

@media (max-width: 640px) {
    .student-directory-hero h1 {
        font-size: 2.35rem;
    }

    .student-directory-heading h2,
    .student-evidence-layout h2 {
        font-size: 1.8rem;
    }

    .student-profile-intro h1 {
        font-size: 2.5rem;
    }

    .student-directory-hero-inner,
    .student-profile-hero-inner {
        padding-top: 30px;
        padding-bottom: 30px;
    }

    .student-card-grid,
    .student-classroom-modes,
    .student-profile-split,
    .student-goal-grid,
    .student-style-options,
    .student-complete-grid,
    .student-profile-aside,
    .student-coach-rail {
        grid-template-columns: minmax(0, 1fr);
    }

    .student-classroom-launch > header {
        display: block;
    }

    .student-classroom-live-badge {
        margin-top: 10px;
    }

    .student-classroom-launch > footer {
        display: grid;
    }

    .student-classroom-setup-grid,
    .student-setup-grid,
    .student-style-options,
    .student-classroom-modes {
        grid-template-columns: minmax(0, 1fr);
    }

    .student-classroom-goal {
        grid-column: auto;
    }

    .student-classroom-launch > footer span {
        display: none;
    }

    .student-profile-split > div + div,
    .student-profile-aside section + section {
        padding-left: 0;
        padding-top: 18px;
        border-left: 0;
        border-top: 1px solid var(--line);
    }

    .student-evidence-points article {
        grid-template-columns: minmax(0, 1fr);
        gap: 5px;
    }

    .student-disclosure-band .section-inner {
        display: block;
    }

    .student-disclosure-band p {
        margin-top: 5px;
    }

    .student-practice-header {
        grid-template-columns: 36px 44px minmax(0, 1fr);
        padding: 8px 10px;
    }

    .student-practice-header > img {
        width: 42px;
        height: 52px;
    }

    .student-practice-header-stats {
        grid-column: 1 / -1;
        justify-content: stretch;
    }

    .student-practice-header-stats span {
        flex: 1;
    }

    .student-practice-layout {
        min-height: 0;
        padding: 10px;
    }

    .student-session-setup,
    .student-session-complete {
        margin: 0;
        padding: 20px;
    }

    .student-session-chat {
        height: 70vh;
        min-height: 520px;
    }

    .student-message-list {
        padding: 14px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .student-card,
    .student-card-media img,
    .student-teach-button,
    .student-mastery-track span,
    .student-response-status > span {
        transition: none;
        animation: none;
    }
}