/* ==================== CYPRUS ROAD SIGNS - STYLES ==================== 
   Version: 1.4
   Last Updated: 2026-02-20
====================================================================== */

/* ==================== RESET & BASE ==================== */
*, *::before, *::after {
    box-sizing: border-box;
}

:root {
    --primary: #2c3e50;
    --accent: #3498db;
    --success: #27ae60;
    --warning: #f39c12;
    --danger: #e74c3c;
    --bg: #f1f2f6;
    --hint-bg: #fff3cd;
    --hint-text: #856404;
    --text: #2c3e50;
    --border: #e0e0e0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg);
    margin: 0;
    padding: 20px;
    padding-left: max(20px, env(safe-area-inset-left));
    padding-right: max(20px, env(safe-area-inset-right));
    padding-bottom: max(20px, env(safe-area-inset-bottom));
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* ==================== MAIN CONTAINER ==================== */
#app {
    background: white;
    width: 100%;
    max-width: 500px;
    padding: 24px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
}

/* ==================== SCREENS ==================== */
.hidden {
    display: none !important;
}

/* Loading spinner */
#loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

/* Start screen */
#start-screen {
    position: relative;
}

/* Action bar for icons (top right) */
.start-actions {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 12px;
}

/* Share button */
.share-btn {
    width: 44px;
    height: 44px;
    padding: 10px;
    background: linear-gradient(135deg, #9b59b6 0%, #2ecc71 100%) !important;
    border: none !important;
    border-radius: 12px;
    cursor: pointer;
    display: flex !important;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease;
    visibility: visible !important;
    opacity: 1 !important;
}

.share-btn:hover {
    transform: translateY(-2px);
    background: linear-gradient(135deg, #9b59b6 0%, #2ecc71 100%) !important;
}

.share-btn:active {
    transform: translateY(0);
    background: linear-gradient(135deg, #9b59b6 0%, #2ecc71 100%) !important;
}

.share-btn img {
    width: 24px;
    height: 24px;
    filter: brightness(0) invert(1);
}

/* Loading spinner */
.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--accent);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin-bottom: 15px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

#loading-text {
    color: var(--text);
    font-size: 16px;
    font-weight: 500;
}

@media (max-width: 480px) {
    .start-actions {
        margin-bottom: 8px;
    }

    .share-btn img {
        width: 24px;
        height: 24px;
    }
}

/* ==================== TYPOGRAPHY ==================== */
h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
    margin: 0 0 20px 0;
}

h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 15px 0;
}

p {
    margin: 12px 0;
    color: var(--text);
    font-weight: 500;
}

/* ==================== PROGRESS ==================== */
.progress-container {
    width: 100%;
    height: 8px;
    background: #e8ecef;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 12px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), #2ecc71);
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    width: 0%;
    border-radius: 4px;
}

.progress {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 16px;
}

/* ==================== SIGN DISPLAY ==================== */
.sign-box {
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fafafa;
    border-radius: 12px;
    border: 2px solid var(--border);
    padding: 20px;
    margin-bottom: 20px;
}

.sign-img {
    max-height: 160px;
    max-width: 100%;
    object-fit: contain;
}

/* ==================== ANSWER OPTIONS ==================== */
.options {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
}

/* ==================== BUTTONS ==================== */
button {
    padding: 14px 20px;
    font-size: 16px;
    font-weight: 600;
    border: 2px solid var(--border);
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    outline: none;
    -webkit-tap-highlight-color: transparent;
    color: var(--text);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

button:hover:not(:disabled) {
    background: linear-gradient(135deg, #f0f4f8 0%, #e8ecef 100%);
    border-color: var(--accent);
    box-shadow: 0 4px 8px rgba(52, 152, 219, 0.2);
    transform: translateY(-2px);
}

button:active:not(:disabled) {
    transform: translateY(0);
    background: linear-gradient(135deg, #e8ecef 0%, #d5d8dd 100%);
    border-color: var(--accent);
    box-shadow: 0 2px 4px rgba(52, 152, 219, 0.15);
}

button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

button.correct {
    background: var(--success) !important;
    color: white !important;
    border-color: var(--success) !important;
}

button.wrong {
    background: var(--danger) !important;
    color: white !important;
    border-color: var(--danger) !important;
}

/* Category buttons */
#category-selector {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin: 12px 0;
}

.category-btn {
    background: #f5f7fa;
    border: 1px solid var(--border);
    padding: 10px 16px;
    font-size: 14px;
    border-radius: 20px;
}

.category-btn.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* Main action button */
.main-btn {
    background: var(--accent);
    color: white;
    border: none;
    padding: 16px;
    width: 100%;
    font-size: 16px;
    font-weight: 700;
    border-radius: 12px;
    margin-top: 12px;
    box-shadow: 0 2px 8px rgba(52, 152, 219, 0.3);
}

.main-btn:hover:not(:disabled) {
    background: #2980b9;
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.4);
}

/* Translate button */
.translate-btn {
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%) !important;
    color: white !important;
    border: none !important;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 8px;
    margin-top: 16px;
    width: auto;
    display: inline-block;
    box-shadow: 0 2px 8px rgba(52, 152, 219, 0.3);
    transition: all 0.2s ease;
}

.translate-btn:hover {
    background: linear-gradient(135deg, #2980b9 0%, #2471a3 100%) !important;
    color: white !important;
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.4) !important;
    transform: translateY(-2px);
}

.translate-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(52, 152, 219, 0.25);
}

.translate-btn.active {
    background: linear-gradient(135deg, #27ae60 0%, #229954 100%) !important;
    box-shadow: 0 2px 8px rgba(39, 174, 96, 0.3);
}

.translate-btn.active:hover {
    background: linear-gradient(135deg, #229954 0%, #1e8449 100%) !important;
    box-shadow: 0 4px 12px rgba(39, 174, 96, 0.4) !important;
}

/* Hide translate button on start and result screens */
#start-screen .translate-btn,
#result-screen .translate-btn,
#reference-screen .translate-btn {
    display: none !important;
}

/* ==================== HINT BOX ==================== */
.hint-box {
    background: linear-gradient(135deg, #fff3cd 0%, #ffe8a1 100%);
    color: var(--hint-text);
    padding: 18px 20px;
    border-radius: 12px;
    margin: 16px 0;
    font-size: 15px;
    line-height: 1.6;
    text-align: left;
    border: 2px solid #ffc107;
    border-left: 5px solid #ffc107;
    box-shadow: 0 4px 12px rgba(255, 193, 7, 0.15);
    animation: slideDown 0.3s ease-out;
}

.hint-box strong {
    color: #856404;
    font-weight: 700;
    display: block;
    margin-bottom: 6px;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== LANGUAGE SETTINGS ==================== */
.lang-settings {
    background: #f5f7fa;
    border-radius: 12px;
    padding: 16px;
    margin: 20px 0;
    text-align: left;
}

.lang-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 12px 0;
    gap: 12px;
}

.lang-row label {
    font-size: 14px;
    color: var(--text);
    min-width: 150px;
    white-space: nowrap;
    font-weight: 500;
}

.lang-row select {
    flex: 1;
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
    font-size: 14px;
    background: white;
    color: var(--text);
    min-width: 120px;
}

/* ==================== TOGGLE SWITCH ==================== */
.switch {
    position: relative;
    display: inline-block;
    width: 52px;
    height: 28px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background-color: #ccc;
    transition: 0.3s;
    border-radius: 28px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

input:checked + .slider {
    background-color: var(--accent);
}

input:checked + .slider:before {
    transform: translateX(24px);
}

/* ==================== RESULTS ==================== */
#log {
    max-height: 450px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    margin: 16px 0;
    text-align: left;
}

.result-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    border-bottom: 1px solid var(--border);
    background: #fafafa;
    border-radius: 10px;
    margin-bottom: 10px;
}

.result-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.result-item img {
    width: 70px;
    height: 70px;
    object-fit: contain;
    flex-shrink: 0;
}

.result-item > div {
    flex: 1;
    text-align: left;
}

.result-item .status {
    font-weight: 700;
    font-size: 15px;
    margin-bottom: 6px;
}

.result-item .answer {
    font-size: 15px;
    font-weight: 600;
    margin: 4px 0;
}

.result-item .user-answer {
    font-size: 13px;
    color: #888;
    margin: 4px 0;
}

.result-item .hint {
    font-size: 13px;
    color: var(--hint-text);
    font-style: italic;
    margin: 6px 0 0 0;
}

.result-item .time {
    font-size: 14px;
    font-weight: 700;
    margin-top: 8px;
}

/* ==================== DESKTOP QUIZ SCREEN ==================== */
@media (min-width: 481px) {
    #quiz-screen:not(.hidden) {
        min-height: 420px;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
    
    .sign-box {
        margin: 16px auto;
    }
}

/* ==================== MOBILE STYLES ==================== */
@media (max-width: 480px) {
    body {
        padding: 12px;
        align-items: flex-start;
    }
    
    #app {
        padding: 16px;
        border-radius: 12px;
    }
    
    h1 {
        font-size: 1.4rem;
    }
    
    h2 {
        font-size: 1.25rem;
    }
    
    /* Larger touch targets */
    button:not(.translate-btn):not(.category-btn):not(.share-btn) {
        min-height: 50px;
        padding: 14px 18px;
    }

    /* Share button remains square */
    .share-btn {
        width: 44px !important;
        height: 44px !important;
        padding: 10px !important;
        flex-shrink: 0;
        min-height: 44px !important;
    }
    
    .category-btn {
        min-height: 42px;
        padding: 10px 14px;
        font-size: 13px;
    }
    
    .main-btn {
        min-height: 52px;
        padding: 16px 20px;
        font-size: 16px;
    }
    
    /* Larger progress bar */
    .progress-container {
        height: 10px;
    }
    
    /* Sign box adjustments */
    .sign-box {
        min-height: 160px;
        padding: 16px;
    }
    
    .sign-img {
        max-height: 130px;
    }
    
    /* Language settings - stack vertically */
    .lang-settings {
        padding: 14px;
    }
    
    .lang-row {
        flex-direction: column;
        align-items: stretch;
    }
    
    .lang-row label {
        min-width: auto;
        width: 100%;
        margin-bottom: 6px;
    }
    
    .lang-row select {
        width: 100%;
    }
    
    /* Results - larger images, centered */
    .result-item {
        flex-direction: column;
        text-align: center;
        padding: 14px;
    }
    
    .result-item img {
        width: 90px;
        height: 90px;
    }
    
    .result-item > div {
        text-align: center;
        width: 100%;
    }
    
    #log {
        max-height: 55vh;
        padding: 8px 0;
    }
    
    /* Hint box on mobile */
    .hint-box {
        padding: 16px;
        font-size: 14px;
        margin: 12px 0;
    }
}

/* ==================== QUIZ BUTTONS CONTAINER ==================== */
#quiz-buttons {
    width: 100%;
    margin-top: 12px;
}

#quiz-buttons .main-btn {
    width: 100%;
    min-height: 50px;
    padding: 16px 20px;
    font-size: 16px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

/* ==================== STICKY NEXT BUTTON (MOBILE) ==================== */
@media (max-width: 480px) {
    #quiz-screen:not(.hidden) {
        position: relative;
        padding-bottom: 20px;
    }
    
    #quiz-buttons {
        margin-top: 12px;
    }
    
    #quiz-buttons .main-btn {
        width: 100%;
        min-height: 52px;
        padding: 16px 20px;
        font-size: 16px;
        box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
    }
    
    /* Ensure options have space */
    #options {
        margin-bottom: 12px;
    }
    
    .sign-box {
        margin-top: 8px;
        margin-bottom: 16px;
    }
    
    .options {
        gap: 10px;
    }
}

/* ==================== VERY SMALL SCREENS ==================== */
@media (max-width: 360px) {
    body {
        padding: 8px;
    }
    
    #app {
        padding: 14px;
    }
    
    /* Two columns for category buttons */
    #category-selector {
        gap: 6px;
    }
    
    .category-btn {
        flex: 1 1 calc(50% - 6px);
        font-size: 12px;
        padding: 8px 12px;
    }
    
    h1 {
        font-size: 1.25rem;
    }
    
    .sign-box {
        min-height: 140px;
        padding: 12px;
    }
    
    .sign-img {
        max-height: 110px;
    }
}

/* ==================== SAFE AREA FOR IPHONE ==================== */
@supports (padding: max(0px)) {
    #app {
        border-bottom-left-radius: max(12px, env(safe-area-inset-left));
        border-bottom-right-radius: max(12px, env(safe-area-inset-right));
    }
}

/* ==================== REFERENCE SCREEN ==================== */
#reference-screen h2 {
    margin-bottom: 20px;
    font-size: 1.4rem;
}

#reference-list {
    -webkit-overflow-scrolling: touch;
}

.reference-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 16px;
    background: #fafafa;
    border-radius: 12px;
    margin-bottom: 12px;
    border: 1px solid var(--border);
}

.reference-item img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    flex-shrink: 0;
    background: white;
    border-radius: 8px;
    padding: 8px;
}

.reference-content {
    flex: 1;
    text-align: left;
}

.reference-category {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 12px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 8px;
}

.reference-category.warning { background: #ffeaa7; color: #d35400; }
.reference-category.regulatory { background: #ffcccc; color: #c0392b; }
.reference-category.mandatory { background: #d6eaf8; color: #2980b9; }
.reference-category.information { background: #d5f5e3; color: #27ae60; }
.reference-category.police { background: #e8daef; color: #8e44ad; }
.reference-category.markings { background: #f9e79f; color: #b7950b; }

.reference-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}

.reference-hint {
    font-size: 14px;
    color: #555;
    line-height: 1.6;
    font-style: italic;
}

/* Mobile reference styles */
@media (max-width: 480px) {
    .reference-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .reference-content {
        text-align: center;
        width: 100%;
    }
    
    .reference-item img {
        width: 100px;
        height: 100px;
    }
}

/* ==================== FLASHCARD MODE ==================== */
.flashcard-answer {
    background: linear-gradient(135deg, #fff3cd 0%, #ffe8a1 100%);
    border: 2px solid #ffc107;
    border-left: 5px solid #ffc107;
    border-radius: 12px;
    padding: 20px;
    margin: 15px 0;
    text-align: left;
    animation: slideDown 0.4s ease-out;
}

.flashcard-name {
    font-size: 18px;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 10px;
}

.flashcard-hint {
    font-size: 14px;
    color: #856404;
    line-height: 1.6;
    font-style: italic;
}

.flashcard-buttons {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.flashcard-btn {
    flex: 1;
    padding: 16px;
    font-size: 16px;
    font-weight: 700;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 50px;
}

.flashcard-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.flashcard-correct {
    background: linear-gradient(135deg, #27ae60 0%, #229954 100%);
    color: white;
}

.flashcard-correct:not(:disabled):hover {
    background: linear-gradient(135deg, #229954 0%, #1e8449 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(39, 174, 96, 0.3);
}

.flashcard-wrong {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
}

.flashcard-wrong:not(:disabled):hover {
    background: linear-gradient(135deg, #c0392b 0%, #a93226 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
}

/* Flashcard toast for "Check answer first" */
.flashcard-toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    z-index: 1000;
    animation: fadeInOut 2s ease-in-out;
}

@keyframes fadeInOut {
    0% { opacity: 0; transform: translateX(-50%) translateY(20px); }
    20% { opacity: 1; transform: translateX(-50%) translateY(0); }
    80% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(-20px); }
}

/* Mobile flashcard styles */
@media (max-width: 480px) {
    .flashcard-buttons {
        flex-direction: column;
    }
    
    .flashcard-btn {
        width: 100%;
    }
    
    .flashcard-answer {
        padding: 15px;
    }
    
    .flashcard-name {
        font-size: 16px;
    }
    
    .flashcard-hint {
        font-size: 13px;
    }
}