/* ===== Auth Styles ===== */

/* Navigation auth button */
.nav-auth-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    background: var(--accent);
    color: #1a1108;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background var(--transition), transform var(--transition);
    white-space: nowrap;
}

.nav-auth-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

/* Navigation user menu */
.nav-user-menu {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.nav-user-menu-trigger {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.875rem;
    color: var(--text);
    cursor: pointer;
    transition: border-color var(--transition), background var(--transition);
}

.nav-user-menu-trigger:hover {
    border-color: var(--accent);
    background: var(--accent-dim);
}

.nav-user-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 180px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    z-index: 200;
    overflow: hidden;
}

.nav-user-menu.open .nav-user-dropdown {
    display: block;
}

.nav-user-dropdown a,
.nav-user-dropdown button {
    display: block;
    width: 100%;
    padding: 10px 16px;
    font-family: var(--font);
    font-size: 0.875rem;
    color: var(--text);
    text-decoration: none;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
}

.nav-user-dropdown a:hover,
.nav-user-dropdown button:hover {
    background: var(--surface);
    color: var(--accent);
}

/* Role badge */
.role-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    font-family: var(--font);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.role-badge.teacher {
    background: var(--accent-dim);
    color: var(--accent);
    border: 1px solid rgba(226, 162, 71, 0.25);
}

.role-badge.student {
    background: rgba(92, 184, 92, 0.08);
    color: var(--green);
    border: 1px solid rgba(92, 184, 92, 0.2);
}

/* Login page layout */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px 16px 40px;
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px 36px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.login-card h1 {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 8px;
}

.login-card .login-subtitle {
    color: var(--text-muted);
    font-size: 0.9375rem;
    margin-bottom: 28px;
    line-height: 1.5;
}

/* Google / primary sign-in button */
.login-google-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 12px 20px;
    background: var(--accent);
    color: #1a1108;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition), transform var(--transition);
    margin-bottom: 20px;
}

.login-google-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

/* Role toggle (student / teacher) */
.login-role-toggle {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.login-role-toggle label {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.login-role-toggle input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.login-role-toggle input[type="radio"]:checked + span {
    /* handled via label styling below */
}

.login-role-toggle label:has(input:checked) {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-dim);
}

/* Login status message */
#login-status {
    margin-top: 16px;
    font-size: 0.875rem;
    min-height: 20px;
}

#login-status.error {
    color: var(--red);
}

#login-status.success {
    color: var(--green);
}

/* Signup form (shown after callback for new users) */
#signup-form {
    display: none;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

#signup-form h2 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text);
}

#signup-form p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

#signup-form input[type="text"] {
    width: 100%;
    padding: 10px 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.9375rem;
    color: var(--text);
    margin-bottom: 12px;
    transition: border-color var(--transition);
}

#signup-form input[type="text"]:focus {
    outline: none;
    border-color: var(--accent);
}

#signup-form input[type="text"]::placeholder {
    color: var(--text-muted);
}

#signup-form .signup-submit-btn {
    width: 100%;
    padding: 11px 20px;
    background: var(--accent);
    color: #1a1108;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition);
}

#signup-form .signup-submit-btn:hover {
    background: var(--accent-hover);
}

/* ===== Dashboard ===== */
.dashboard-header {
    padding: 48px 0 32px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 32px;
}

.dashboard-header h1 {
    font-size: 1.875rem;
    font-weight: 800;
    margin-bottom: 6px;
}

.dashboard-header p {
    color: var(--text-muted);
    font-size: 0.9375rem;
}

/* Class cards */
.class-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.class-card:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 16px rgba(226, 162, 71, 0.08);
}

.class-code {
    display: inline-block;
    padding: 4px 10px;
    background: var(--accent-dim);
    color: var(--accent);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    margin-bottom: 12px;
}

.class-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 12px;
}

.class-meta span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* Student table */
.student-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.student-table th {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
}

.student-table td {
    padding: 12px 12px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

.student-table tr:last-child td {
    border-bottom: none;
}

.student-table tr:hover td {
    background: var(--surface);
}

/* Create class form */
.create-class-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
    max-width: 480px;
}

.create-class-form label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 4px;
    display: block;
}

.create-class-form input[type="text"],
.create-class-form select {
    width: 100%;
    padding: 10px 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.9375rem;
    color: var(--text);
    transition: border-color var(--transition);
}

.create-class-form input[type="text"]:focus,
.create-class-form select:focus {
    outline: none;
    border-color: var(--accent);
}

.create-class-form button[type="submit"] {
    align-self: flex-start;
    padding: 10px 24px;
    background: var(--accent);
    color: #1a1108;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition);
}

.create-class-form button[type="submit"]:hover {
    background: var(--accent-hover);
}

/* Join class (student) */
.join-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px 16px 40px;
}

.join-card {
    width: 100%;
    max-width: 400px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px 36px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.join-card h1 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.join-card p {
    color: var(--text-muted);
    font-size: 0.9375rem;
    margin-bottom: 24px;
}

/* Annotation card */
.annotation-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius);
    padding: 16px 20px;
    margin-bottom: 12px;
}

.annotation-card .annotation-author {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 6px;
}

.annotation-card .annotation-body {
    font-size: 0.9375rem;
    color: var(--text);
    line-height: 1.6;
}

.annotation-card .annotation-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 8px;
}

/* Annotation input area */
.annotation-input {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 16px;
}

.annotation-input textarea {
    width: 100%;
    min-height: 80px;
    padding: 10px 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.9375rem;
    color: var(--text);
    resize: vertical;
    transition: border-color var(--transition);
}

.annotation-input textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.annotation-input button {
    align-self: flex-end;
    padding: 8px 20px;
    background: var(--accent);
    color: #1a1108;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition);
}

.annotation-input button:hover {
    background: var(--accent-hover);
}

/* Teacher answer key highlight */
.kc-answer-key {
    background: var(--green-bg);
    border: 1px solid rgba(92, 184, 92, 0.25);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: 0.9375rem;
    color: var(--green);
    line-height: 1.6;
}

.kc-answer-key::before {
    content: 'Answer Key';
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 6px;
    opacity: 0.75;
}