@import url('https://fonts.googleapis.com/css2?family=Fraunces:wght@500;700&family=Manrope:wght@400;500;700&display=swap');

:root {
    --ink: #112118;
    --ink-soft: #274236;
    --surface: #f6f4ed;
    --surface-strong: #ffffff;
    --line: #d6dfd1;
    --brand: #245a3d;
    --brand-soft: #3f825c;
    --alert: #8f2f2f;
    --student: #1f6d66;
    --applicant: #8b6a1c;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--ink);
    font-family: 'Manrope', sans-serif;
}

.student-auth-body {
    background:
        radial-gradient(circle at 20% 20%, rgba(63, 130, 92, 0.24), transparent 34%),
        radial-gradient(circle at 80% 10%, rgba(36, 90, 61, 0.2), transparent 35%),
        linear-gradient(135deg, #edf3ea, #f8f5ef);
}

.auth-shell {
    width: min(1080px, 92vw);
    margin: 4rem auto;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    border: 1px solid var(--line);
    border-radius: 24px;
    overflow: hidden;
    background: var(--surface-strong);
    box-shadow: 0 30px 70px rgba(17, 33, 24, 0.12);
}

.brand-panel {
    padding: 3rem;
    background: linear-gradient(155deg, #214f37, #2f7a55);
    color: #f8fffb;
}

.brand-kicker {
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-size: 0.78rem;
    opacity: 0.88;
}

.brand-panel h1,
.student-topbar h1,
.card h2,
.card h3 {
    margin-top: 0;
    font-family: 'Fraunces', serif;
}

.brand-panel h1 {
    margin-bottom: 0.7rem;
    font-size: clamp(2rem, 5vw, 2.8rem);
    line-height: 1.1;
}

.brand-points {
    margin: 2rem 0 0;
    padding-left: 1rem;
    line-height: 1.8;
}

.auth-card {
    padding: 3rem;
    background: var(--surface);
}

.auth-card h2 {
    font-size: 1.7rem;
    margin-bottom: 0.5rem;
}

.auth-card p {
    margin-top: 0;
    color: var(--ink-soft);
}

.auth-form {
    display: grid;
    gap: 0.7rem;
    margin-top: 1.2rem;
}

.auth-form label {
    font-size: 0.9rem;
    color: var(--ink-soft);
}

.auth-form input {
    border: 1px solid #c6d2c2;
    border-radius: 10px;
    padding: 0.8rem 0.9rem;
    font-size: 1rem;
}

.auth-form input:focus {
    outline: 2px solid #a3c9b2;
    border-color: #8cb39b;
}

.auth-form button,
.btn-secondary {
    margin-top: 0.8rem;
    border: 0;
    border-radius: 12px;
    padding: 0.85rem 1rem;
    font-weight: 700;
    color: #f4fff9;
    background: linear-gradient(90deg, var(--brand), var(--brand-soft));
    text-decoration: none;
    text-align: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.auth-form button:hover,
.btn-secondary:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(36, 90, 61, 0.25);
}

.alert-error {
    border: 1px solid #dca8a8;
    background: #f9e4e4;
    color: #6e1f1f;
    border-radius: 10px;
    padding: 0.7rem 0.8rem;
    margin-top: 1rem;
}

.alert-success {
    border: 1px solid #9fc8a9;
    background: #e4f3e8;
    color: #1e5630;
    border-radius: 10px;
    padding: 0.7rem 0.8rem;
    margin-top: 1rem;
}

.auth-switch {
    margin: 1rem 0 0;
    color: var(--ink-soft);
}

.auth-switch a {
    color: var(--brand);
    font-weight: 700;
    text-decoration: none;
}

.auth-switch a:hover {
    text-decoration: underline;
}

.register-form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 0.9rem;
}

.register-form button,
.register-form .form-full {
    grid-column: 1 / -1;
}

.student-app-body {
    background: #eef3eb;
    position: relative;
}

.app-bg {
    position: fixed;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(900px 500px at 4% 4%, rgba(63, 130, 92, 0.18), transparent 65%),
        radial-gradient(800px 420px at 98% 0%, rgba(36, 90, 61, 0.16), transparent 70%);
}

.student-topbar {
    position: relative;
    z-index: 2;
    width: min(1080px, 92vw);
    margin: 2rem auto 1.2rem;
    padding: 1.3rem 1.5rem;
    border-radius: 16px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
}

.student-topbar h1 {
    margin-bottom: 0;
}

.topbar-kicker {
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-size: 0.72rem;
    color: #50705f;
}

.student-topbar nav {
    display: flex;
    gap: 0.55rem;
    flex-wrap: wrap;
}

.student-topbar nav a {
    text-decoration: none;
    color: var(--ink);
    border: 1px solid transparent;
    padding: 0.45rem 0.8rem;
    border-radius: 999px;
    font-size: 0.92rem;
}

.student-topbar nav a.active {
    border-color: #9fc4aa;
    background: #e4f0e8;
}

.danger-link {
    color: #7e1f1f;
}

.student-grid {
    position: relative;
    z-index: 2;
    width: min(1080px, 92vw);
    margin: 0 auto 2.4rem;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.single-column {
    grid-template-columns: minmax(0, 1fr);
}

.card {
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 1.2rem;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 14px 32px rgba(17, 33, 24, 0.08);
}

.card-highlight {
    background: linear-gradient(145deg, #ffffff, #f1f6ef);
}

.student-name {
    font-size: 1.3rem;
    font-weight: 700;
    margin: 0.2rem 0;
}

.badge-status {
    display: inline-block;
    margin: 0.2rem 0 0.7rem;
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    font-weight: 700;
    font-size: 0.85rem;
}

.status-student {
    color: #0d3f3a;
    background: rgba(31, 109, 102, 0.2);
}

.status-applicant {
    color: #5f4710;
    background: rgba(139, 106, 28, 0.23);
}

.meta-list {
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.9rem;
}

.meta-list div {
    display: grid;
    gap: 0.12rem;
}

.meta-list dt {
    font-size: 0.82rem;
    color: #5d7668;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.meta-list dd {
    margin: 0;
    font-weight: 600;
}

.profile-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.action-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
}

.course-accordion {
    display: grid;
    gap: 0.9rem;
}

.course-group {
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #f8fbf7;
    overflow: hidden;
}

.course-group-toggle {
    width: 100%;
    border: 0;
    background: transparent;
    color: var(--ink);
    padding: 0.9rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
}

summary.course-group-toggle {
    list-style: none;
}

summary.course-group-toggle::-webkit-details-marker {
    display: none;
}

.course-group-toggle:hover {
    background: rgba(36, 90, 61, 0.06);
}

.course-group-toggle.is-open {
    background: rgba(36, 90, 61, 0.12);
}

.course-group-arrow {
    transition: transform 0.2s ease;
}

.course-group-toggle.is-open .course-group-arrow {
    transform: rotate(180deg);
}

.course-group-list {
    display: grid;
    gap: 0.5rem;
    padding: 0 0.8rem 0.8rem;
}

.course-item {
    border: 1px solid #d7e0d5;
    border-radius: 12px;
    background: #ffffff;
}

.course-item-summary {
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.8rem;
    padding: 0.8rem 0.9rem;
}

summary.course-item-summary {
    cursor: pointer;
}

summary.course-item-summary::-webkit-details-marker {
    display: none;
}

.course-item-name {
    font-weight: 600;
}

.course-item-state {
    font-size: 0.86rem;
    color: #2f6d4b;
    font-weight: 700;
    white-space: nowrap;
}

.course-item-detail {
    border-top: 1px solid #e3e8e2;
    padding: 0.8rem 0.9rem;
    color: #536f61;
    font-size: 0.92rem;
}

.course-detail-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 0.8rem;
}

.course-curriculum {
    border: 1px solid #e3e8e2;
    border-radius: 10px;
    overflow: hidden;
    background: #fbfdfb;
}

.curriculum-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.84rem;
}

.curriculum-table th,
.curriculum-table td {
    padding: 0.45rem 0.5rem;
    border-bottom: 1px solid #e7ece7;
    text-align: left;
}

.curriculum-table th {
    font-size: 0.75rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: #50685b;
    background: #f3f7f3;
}

.curriculum-table tbody tr:last-child td {
    border-bottom: 0;
}

.course-info-box {
    border: 1px solid #e3e8e2;
    border-radius: 10px;
    background: #fbfdfb;
    padding: 0.7rem;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.course-info-box h4 {
    margin: 0 0 0.4rem;
    font-size: 0.9rem;
    font-family: 'Fraunces', serif;
    color: #2d4b3c;
}

.course-info-box p {
    margin: 0;
    color: #4a6457;
}

.course-price {
    margin-top: 0.7rem !important;
    font-weight: 700;
    color: #204f37 !important;
}

.course-apply-btn {
    margin-top: auto;
    align-self: flex-end;
    border: 0;
    border-radius: 999px;
    padding: 0.45rem 0.85rem;
    font-size: 0.84rem;
    font-weight: 700;
    color: #f4fff9;
    background: linear-gradient(90deg, var(--brand), var(--brand-soft));
    cursor: pointer;
}

.course-apply-btn:hover {
    filter: brightness(1.03);
}

.course-item-disabled {
    background: #f2f4f2;
    border-color: #e2e5e2;
}

.course-item-disabled .course-item-name,
.course-item-disabled .course-item-state {
    color: #8a928d;
}

@media (max-width: 920px) {
    .auth-shell,
        grid-template-columns: minmax(0, 1fr);
        grid-template-columns: minmax(0, 1fr);
    }

    .auth-shell {
        margin-top: 1.5rem;
    }

    .student-topbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .profile-list {
        grid-template-columns: minmax(0, 1fr);
    }

    .register-form {
        grid-template-columns: minmax(0, 1fr);
    }

    .course-detail-layout {
        grid-template-columns: minmax(0, 1fr);
    }
}