/* ===== Fingerspelling Challenge - Ms. Murphy's Class ===== */
/* Soft & Elegant Pink Theme */

/* ===== Gallaudet Font ===== */
@font-face {
    font-family: 'Gallaudet';
    src: url('../../GallaudetRegular.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

/* ===== CSS Custom Properties ===== */
:root {
    /* Colors */
    --bg-primary: #FFF5F8;
    --bg-secondary: #FFEAEE;
    --header-bg: #FF2A75;
    --header-bg-dark: #D81159;
    --btn-primary: #FF3366;
    --btn-hover: #E6004C;
    --btn-text: #FFFFFF;
    --text-primary: #1A1A1A;
    --text-secondary: #595959;
    --accent: #D81159;
    --success: #10B981;
    --error: #E53935;
    --input-bg: #FFFFFF;
    --input-border: #FFD1DC;
    --link-color: #D81159;
    --card-shadow: rgba(216, 17, 89, 0.08);
    --card-shadow-hover: rgba(216, 17, 89, 0.15);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 0.75rem;
    --spacing-lg: 1.25rem;
    --spacing-xl: 2rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset & Base Styles ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html,
body {
    height: 100%;
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    background-image:
        radial-gradient(circle at 15% 50%, rgba(255, 234, 238, 0.8), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(255, 192, 203, 0.3), transparent 25%);
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.app-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* ===== Header ===== */
.app-header {
    background: linear-gradient(135deg, var(--header-bg), var(--header-bg-dark));
    color: white;
    text-align: center;
    padding: var(--spacing-md) var(--spacing-xl);
    box-shadow: 0 4px 15px rgba(216, 17, 89, 0.2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.app-header h1 {
    font-size: 1.4rem;
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.5px;
}

.header-nav {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.btn-link {
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.4rem 0.8rem;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    color: white;
    transition: all var(--transition-fast);
    backdrop-filter: blur(4px);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-link:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-1px);
}

/* ===== Main Container ===== */
.app-container {
    max-width: 1400px;
    width: 98%;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-sm);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    flex: 1;
    justify-content: center;
}

/* ===== Section Cards ===== */
.section-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: 0 8px 24px var(--card-shadow);
    border: 1px solid rgba(255, 209, 220, 0.4);
}

.section-title {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

/* ===== Challenge Display ===== */
.challenge-display {
    text-align: center;
    border: 3px solid var(--accent);
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
}

.fingerspelling-text {
    font-family: 'Gallaudet', sans-serif;
    font-size: 8rem;
    letter-spacing: 0.01em;
    word-spacing: 0.3em;
    color: var(--text-primary);
    background: white;
    padding: 1.5rem 0.5rem;
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
    overflow: visible;
    line-height: 1.2;
    box-shadow: 0 8px 24px var(--card-shadow);
    display: block;
    width: 100%;
    box-sizing: border-box;
    text-align: center;
    word-break: keep-all;
    overflow-wrap: normal;
    white-space: normal;
}

.challenge-instructions {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

/* ===== Info Divider ===== */
.info-divider {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: var(--spacing-lg) 0 var(--spacing-md);
}

.info-divider::before,
.info-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--input-border);
}

.info-divider-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    white-space: nowrap;
}

/* ===== Info Row (name + period) ===== */
.info-row {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    align-items: center;
    justify-content: center;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.info-row .input-field {
    flex: 1;
}

.info-row .period-select {
    flex: 0 0 auto;
    min-width: 180px;
    width: auto;
}

/* ===== Answer Row (answer + submit) ===== */
.answer-row {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    justify-content: center;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.answer-row .input-field {
    flex: 1;
}

/* ===== Compact Info Section (Student Page) ===== */
.info-card {
    padding: var(--spacing-md);
}

.info-card .section-title {
    font-size: 0.85rem;
    margin-bottom: var(--spacing-sm);
}

.info-card .input-field {
    font-size: 0.9rem;
    padding: 0.4rem 0.6rem;
}

.info-card .name-input {
    width: 180px;
}

.info-card .period-select {
    width: 160px;
}

/* ===== Input Section ===== */
.input-section {
    text-align: center;
}

.input-group {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin: var(--spacing-md) 0;
}

.input-field {
    font-family: inherit;
    font-size: 1.1rem;
    font-weight: 600;
    padding: 0.5rem 0.75rem;
    border: 2px solid var(--input-border);
    border-radius: var(--radius-sm);
    background: var(--input-bg);
    color: var(--text-primary);
    text-align: center;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    width: 100%;
    max-width: 500px;
}

.input-field:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(216, 17, 89, 0.1);
    background-color: white;
}

.input-field::placeholder {
    color: #AAAAAA;
    font-weight: 400;
    font-size: 0.95rem;
}

.name-input {
    width: 250px;
}

/* ===== Button Styles ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.2rem;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--btn-text);
    background: var(--btn-primary);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 10px rgba(255, 51, 102, 0.2);
    text-transform: capitalize;
    font-family: inherit;
    letter-spacing: 0.3px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(255, 51, 102, 0.3);
    background: var(--btn-hover);
}

.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-lg {
    padding: 0.8rem 1.6rem;
    font-size: 1.1rem;
}

/* ===== Result Display ===== */
.result-display {
    text-align: center;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
    display: none;
}

.result-display.show {
    display: block;
}

.result-display.correct {
    background: linear-gradient(135deg, #E8F5E9, #C8E6C9);
    border: 2px solid var(--success);
}

.result-display.incorrect {
    background: linear-gradient(135deg, #FFEBEE, #FFCDD2);
    border: 2px solid var(--error);
}

.result-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.result-message {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.result-display.correct .result-message {
    color: var(--success);
}

.result-display.incorrect .result-message {
    color: var(--error);
}

.result-name {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.correct-answer {
    margin-top: var(--spacing-sm);
    font-size: 1rem;
    color: var(--text-secondary);
}

/* ===== Student Info Display ===== */
.student-info {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.info-item {
    text-align: center;
}

.info-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-value {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent);
}

/* ===== Loading State ===== */
.loading {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 3px solid var(--bg-secondary);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ===== No Challenge State ===== */
.no-challenge {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.no-challenge-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

/* ===== Footer ===== */
.app-footer {
    background: white;
    border-top: 1px solid var(--input-border);
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    margin-top: auto;
}

.credits {
    max-width: 600px;
    margin: 0 auto;
    color: var(--text-secondary);
}

.credits p {
    font-size: 0.85rem;
    margin-bottom: 0.3rem;
}

.credits .made-for {
    font-weight: 600;
    color: var(--text-primary);
}

.credits .copyright {
    opacity: 0.7;
    font-size: 0.75rem;
}

/* ===== Admin Specific Styles ===== */
.admin-container {
    max-width: 1000px;
    justify-content: flex-start;
    padding-top: 2rem;
}

.admin-container .section-card {
    padding: 2rem;
}

.admin-container .section-title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.login-form,
.admin-panel {
    display: none;
}

.login-form.show,
.admin-panel.show {
    display: block;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    font-family: inherit;
    font-size: 1.1rem;
    padding: 0.75rem 1rem;
    border: 2px solid var(--input-border);
    border-radius: var(--radius-sm);
    background: var(--input-bg);
    color: var(--text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(216, 17, 89, 0.1);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.error-message {
    color: var(--error);
    font-size: 1rem;
    margin-top: 0.5rem;
    display: none;
}

.error-message.show {
    display: block;
}

.success-message {
    color: var(--success);
    font-size: 1.1rem;
    text-align: center;
    margin-top: 1rem;
    display: none;
    font-weight: 600;
}

.success-message.show {
    display: block;
}

.current-challenge {
    background: var(--bg-secondary);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
}

.current-challenge-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.current-challenge-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent);
    word-break: break-word;
}

.admin-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 2px solid var(--bg-secondary);
}

.btn-logout {
    background: transparent;
    color: var(--accent);
    border: 2px solid var(--accent);
    padding: 0.75rem 2rem;
    font-size: 1rem;
}

.btn-logout:hover {
    background: var(--bg-secondary);
    box-shadow: none;
    color: var(--accent);
}

/* ===== Period Select (Student Page) ===== */
.period-select {
    width: 200px;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2rem;
}

/* ===== Admin Tabs ===== */
.admin-tabs {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--bg-secondary);
    overflow-x: auto;
}

.tab-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--accent);
}

.tab-btn.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ===== Periods Section ===== */
.subsection-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.helper-text {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.periods-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.period-checkbox {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
    background: var(--bg-secondary);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.period-checkbox:hover {
    background: var(--bg-primary);
    transform: translateY(-1px);
}

.period-checkbox.checked {
    background: var(--bg-secondary);
    border-color: var(--accent);
}

.period-checkbox input {
    cursor: pointer;
    width: 18px;
    height: 18px;
}

.checkbox-label {
    font-size: 1rem;
    font-weight: 600;
}

/* ===== Stats Overview ===== */
.stats-overview {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-primary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    flex: 1;
    min-width: 120px;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 0.25rem;
}

/* ===== Filters Section ===== */
.filters-section {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: flex-end;
    margin-bottom: 1.5rem;
    padding: 1.25rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.filter-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.filter-select,
.filter-input {
    padding: 0.6rem 0.85rem;
    border: 2px solid var(--input-border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    background: var(--input-bg);
    min-width: 140px;
}

.filter-select:focus,
.filter-input:focus {
    outline: none;
    border-color: var(--accent);
}

/* ===== Responses Table ===== */
.table-container {
    overflow-x: auto;
    margin-bottom: 1.5rem;
    border: 1px solid var(--bg-secondary);
    border-radius: var(--radius-md);
}

.responses-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 1rem;
}

.responses-table th,
.responses-table td {
    padding: 1rem 0.85rem;
    text-align: left;
    border-bottom: 1px solid var(--bg-secondary);
}

.responses-table th {
    background: var(--bg-secondary);
    font-weight: 700;
    color: var(--text-primary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.responses-table tbody tr:nth-child(even) {
    background: var(--bg-primary);
}

.responses-table tbody tr:hover {
    background: var(--bg-secondary);
}

.responses-table .challenge-cell,
.responses-table .answer-cell {
    word-break: break-word;
    min-width: 120px;
}

.responses-table .date-cell {
    white-space: nowrap;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.result-badge {
    display: inline-block;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
}

.result-badge.correct {
    background: #C8E6C9;
    color: #2E7D32;
}

.result-badge.incorrect {
    background: #FFCDD2;
    color: #C62828;
}

.no-responses {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* ===== Table Actions ===== */
.table-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-start;
    flex-wrap: wrap;
}

.btn-small {
    padding: 0.6rem 1rem;
    font-size: 0.95rem;
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    box-shadow: none;
}

.btn-secondary:hover {
    background: #FFE0ED;
    box-shadow: none;
}

.btn-danger {
    background: #ef4444;
}

.btn-danger:hover {
    background: #dc2626;
    box-shadow: 0 6px 15px rgba(239, 68, 68, 0.3);
}

/* ===== Modal ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    max-width: 500px;
    width: 90%;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.modal-content h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.5rem;
}

.modal-content p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1.1rem;
    line-height: 1.5;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.modal-actions .btn {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

/* ===== Responsive Design ===== */

/* Large Desktop (1200px+) */
@media (min-width: 1200px) {
    .admin-container {
        max-width: 1200px;
    }

    .stats-overview {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }

    .periods-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) and (min-width: 769px) {
    .app-container {
        padding: var(--spacing-lg);
    }

    .admin-container {
        max-width: 900px;
    }

    .fingerspelling-text {
        font-size: 9rem;
        letter-spacing: -0.02em;
        word-spacing: 0.3em;
    }

    .periods-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .stats-overview {
        grid-template-columns: repeat(3, 1fr);
    }

    .filters-section {
        flex-wrap: wrap;
    }

    .filter-group {
        flex: 1;
        min-width: 150px;
    }
}

/* Small Tablet / Large Phone (600px - 768px) */
@media (max-width: 768px) and (min-width: 601px) {
    .fingerspelling-text {
        font-size: 6rem;
        letter-spacing: -0.02em;
        word-spacing: 0.25em;
    }

    .app-container {
        padding: var(--spacing-md);
    }

    .admin-container {
        max-width: 700px;
    }

    .periods-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .stats-overview {
        grid-template-columns: repeat(3, 1fr);
    }

    .tab-btn {
        padding: 0.7rem 1rem;
        font-size: 1rem;
    }
}

/* Mobile (600px and below) */
@media (max-width: 600px) {
    .app-header {
        flex-direction: column;
        gap: var(--spacing-xs);
        padding: var(--spacing-sm);
    }

    .app-header h1 {
        font-size: 1.1rem;
    }

    .btn-link {
        padding: 0.4rem 0.6rem;
        font-size: 0.8rem;
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    .fingerspelling-text {
        font-size: 4rem;
        letter-spacing: -0.01em;
        word-spacing: 0.2em;
        padding: var(--spacing-lg) var(--spacing-xs);
    }

    .info-card {
        padding: var(--spacing-sm);
    }

    .info-card .input-group {
        flex-direction: column;
    }

    .info-card .name-input,
    .info-card .period-select {
        width: 100%;
        max-width: 200px;
        min-height: 44px;
    }

    .input-field {
        width: 100%;
        max-width: 100%;
        min-height: 44px;
    }

    .name-input {
        width: 100%;
        max-width: 220px;
    }

    .period-select {
        width: 100%;
        max-width: 220px;
    }

    .student-info {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .app-container {
        padding: var(--spacing-md);
    }

    .btn {
        min-height: 44px;
    }

    .result-message {
        font-size: 1.25rem;
    }

    .result-icon {
        font-size: 2.5rem;
    }

    /* Admin responsive */
    .admin-container {
        padding-top: 1rem;
    }

    .admin-container .section-card {
        padding: 1.25rem;
    }

    .admin-container .section-title {
        font-size: 1.25rem;
    }

    .admin-tabs {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .tab-btn {
        flex: 1;
        text-align: center;
        font-size: 0.85rem;
        padding: 0.6rem 0.4rem;
        min-height: 44px;
    }

    .subsection-title {
        font-size: 1.1rem;
    }

    .helper-text {
        font-size: 0.9rem;
    }

    .periods-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }

    .period-checkbox {
        padding: 0.7rem 0.75rem;
    }

    .checkbox-label {
        font-size: 0.9rem;
    }

    .stats-overview {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .stat-card {
        padding: 1rem;
    }

    .stat-value {
        font-size: 2rem;
    }

    .stat-label {
        font-size: 0.8rem;
    }

    .filters-section {
        flex-direction: column;
        align-items: stretch;
        padding: 1rem;
    }

    .filter-group {
        width: 100%;
    }

    .filter-select,
    .filter-input {
        width: 100%;
        min-height: 44px;
    }

    .responses-table {
        font-size: 0.8rem;
    }

    .responses-table th,
    .responses-table td {
        padding: 0.6rem 0.4rem;
    }

    .responses-table th {
        font-size: 0.7rem;
    }

    .responses-table .challenge-cell,
    .responses-table .answer-cell {
        min-width: 80px;
    }

    .result-badge {
        padding: 0.25rem 0.5rem;
        font-size: 0.75rem;
    }

    .table-actions {
        flex-direction: column;
        gap: 0.5rem;
    }

    .table-actions .btn {
        width: 100%;
    }

    .modal-content {
        padding: 1.5rem;
        width: 95%;
    }

    .modal-content h3 {
        font-size: 1.25rem;
    }

    .modal-content p {
        font-size: 1rem;
    }

    .modal-actions {
        flex-direction: column;
        gap: 0.5rem;
    }

    .modal-actions .btn {
        width: 100%;
    }

    .app-footer {
        padding: var(--spacing-md);
    }

    .credits p {
        display: block;
        margin-bottom: 0.3rem;
    }

    .credits p::after {
        content: "";
    }

    .form-group input,
    .form-group textarea {
        font-size: 1rem;
    }

    .current-challenge-text {
        font-size: 1.25rem;
    }
}

/* Very small phones (360px and below) */
@media (max-width: 360px) {
    .fingerspelling-text {
        font-size: 3rem;
        letter-spacing: -0.01em;
        word-spacing: 0.15em;
    }

    .tab-btn {
        font-size: 0.75rem;
        padding: 0.5rem 0.3rem;
    }

    .periods-grid {
        grid-template-columns: 1fr 1fr;
    }

    .checkbox-label {
        font-size: 0.85rem;
    }

    .responses-table {
        font-size: 0.75rem;
    }

    .responses-table .challenge-cell,
    .responses-table .answer-cell {
        min-width: 60px;
    }
}

/* Short screens (landscape phones) */
@media (max-height: 700px) {
    .fingerspelling-text {
        font-size: 6rem;
        letter-spacing: -0.02em;
        word-spacing: 0.25em;
        padding: var(--spacing-md) var(--spacing-xs);
    }

    .section-card {
        padding: var(--spacing-md);
    }

    .info-card {
        padding: var(--spacing-sm);
    }

    .app-container {
        gap: var(--spacing-md);
        justify-content: flex-start;
        padding-top: var(--spacing-md);
    }

    .challenge-instructions {
        font-size: 0.8rem;
    }
}

/* Very short screens */
@media (max-height: 600px) {
    .fingerspelling-text {
        font-size: 4.5rem;
        letter-spacing: -0.01em;
        word-spacing: 0.2em;
        padding: var(--spacing-sm) var(--spacing-xs);
    }

    .section-card {
        padding: var(--spacing-sm);
    }

    .section-title {
        font-size: 0.85rem;
        margin-bottom: var(--spacing-xs);
    }

    .btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
    }

    .result-icon {
        font-size: 2rem;
    }

    .result-message {
        font-size: 1.1rem;
    }
}

/* Safe area for notched devices */
@supports (padding: max(0px)) {
    .app-header {
        padding-left: max(var(--spacing-md), env(safe-area-inset-left));
        padding-right: max(var(--spacing-md), env(safe-area-inset-right));
    }

    .app-footer {
        padding-bottom: max(var(--spacing-lg), env(safe-area-inset-bottom));
        padding-left: max(var(--spacing-lg), env(safe-area-inset-left));
        padding-right: max(var(--spacing-lg), env(safe-area-inset-right));
    }

    .modal-content {
        padding-bottom: max(2rem, env(safe-area-inset-bottom));
    }
}