/* ===== CSS Variables ===== */
:root {
    --primary: #1e3a5f;
    --primary-dark: #152a45;
    --primary-light: #2d5a8a;
    --accent: #3498db;
    --accent-light: #5dade2;
    --success: #27ae60;
    --warning: #f39c12;
    --danger: #e74c3c;
    --danger-dark: #c0392b;
    --attention: #e67e22;
    --minor: #f1c40f;

    --bg: #f4f6f9;
    --bg-card: #ffffff;
    --text: #2c3e50;
    --text-muted: #7f8c8d;
    --border: #dce4ec;
    --border-focus: #3498db;

    --shadow: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.15);

    --radius: 8px;
    --radius-lg: 12px;

    --touch-target: 48px;
    --spacing: 16px;
    --spacing-sm: 8px;
    --spacing-lg: 24px;

    --font-size: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 22px;
    --font-size-sm: 14px;

    --transition: 0.2s ease;
}

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

html {
    font-size: var(--font-size);
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===== Header ===== */
.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--primary);
    color: white;
    box-shadow: var(--shadow);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing);
    max-width: 600px;
    margin: 0 auto;
}

.app-header h1 {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.sync-status {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #6c757d;
}

.sync-status.online { background: var(--success); }
.sync-status.offline { background: var(--warning); }
.sync-status.syncing {
    background: var(--warning);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.lang-selector {
    padding: var(--spacing-sm) var(--spacing);
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: var(--radius);
    background: transparent;
    color: white;
    font-size: var(--font-size);
    font-weight: 600;
    cursor: pointer;
    min-height: var(--touch-target);
}

.lang-selector option {
    color: var(--text);
}

/* Progress Bar */
.progress-bar {
    height: 4px;
    background: rgba(255,255,255,0.2);
}

.progress-fill {
    height: 100%;
    background: white;
    width: 0%;
    transition: width var(--transition);
}

/* ===== Main Content ===== */
.app-main {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing);
    padding-bottom: calc(var(--spacing) + env(safe-area-inset-bottom));
}

.screen {
    display: none;
}

.screen.active {
    display: block;
}

/* ===== Cards ===== */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing);
    box-shadow: var(--shadow);
}

.card h2 {
    margin: 0 0 var(--spacing-lg) 0;
    font-size: var(--font-size-xl);
    font-weight: 600;
}

/* ===== Form Elements ===== */
.form-group {
    margin-bottom: var(--spacing);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--text);
}

.input-large {
    width: 100%;
    padding: var(--spacing);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: var(--font-size-lg);
    min-height: var(--touch-target);
    background: var(--bg-card);
    color: var(--text);
    transition: border-color var(--transition);
}

.input-large:focus {
    outline: none;
    border-color: var(--border-focus);
}

.input-large::placeholder {
    color: var(--text-muted);
}

textarea.input-large {
    resize: vertical;
    min-height: 100px;
}

select.input-large {
    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='%236c757d' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing);
    border: none;
    border-radius: var(--radius);
    font-size: var(--font-size);
    font-weight: 600;
    cursor: pointer;
    min-height: var(--touch-target);
    transition: all var(--transition);
    text-decoration: none;
}

.btn-large {
    width: 100%;
    font-size: var(--font-size-lg);
    min-height: 56px;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover, .btn-primary:focus {
    background: var(--primary-dark);
}

.btn-primary:disabled {
    background: var(--text-muted);
    cursor: not-allowed;
}

.btn-secondary {
    background: var(--bg);
    color: var(--text);
    border: 2px solid var(--border);
}

.btn-secondary:hover, .btn-secondary:focus {
    background: var(--border);
}

.btn-icon {
    width: var(--touch-target);
    height: var(--touch-target);
    padding: 0;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background: var(--bg);
}

.button-group {
    display: flex;
    gap: var(--spacing);
    margin-top: var(--spacing-lg);
}

.button-group .btn {
    flex: 1;
}

/* ===== Location & Timestamp ===== */
.location-display {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing);
    background: var(--bg);
    border-radius: var(--radius);
    color: var(--text-muted);
}

.location-display span {
    flex: 1;
    font-size: var(--font-size-sm);
}

.timestamp-display {
    padding: var(--spacing);
    background: var(--bg);
    border-radius: var(--radius);
    font-family: monospace;
    font-size: var(--font-size-sm);
}

/* ===== Inspection Sections ===== */
.inspection-section {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.inspection-section.adr-section {
    border: 3px solid var(--attention);
}

.inspection-section.adr-section .section-header {
    background: var(--attention);
    color: white;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing);
    background: var(--bg);
    cursor: pointer;
    min-height: 60px;
    user-select: none;
}

.section-header:active {
    background: var(--border);
}

.section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    font-size: var(--font-size-lg);
}

.section-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.status-badge {
    padding: 4px 8px;
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.status-badge.ok { background: #d5f5e3; color: #1e8449; }
.status-badge.issue { background: #fadbd8; color: #943126; }
.status-badge.pending { background: #eaecee; color: #5d6d7e; }

.section-chevron {
    transition: transform var(--transition);
}

.inspection-section.expanded .section-chevron {
    transform: rotate(180deg);
}

.section-content {
    display: none;
    padding: var(--spacing);
    border-top: 1px solid var(--border);
}

.inspection-section.expanded .section-content {
    display: block;
}

/* All OK Button */
.all-ok-btn {
    width: 100%;
    padding: var(--spacing);
    margin-bottom: var(--spacing);
    background: #d5f5e3;
    border: 2px solid var(--success);
    border-radius: var(--radius);
    color: #1e8449;
    font-weight: 600;
    font-size: var(--font-size);
    cursor: pointer;
    min-height: var(--touch-target);
    transition: all var(--transition);
}

.all-ok-btn:hover, .all-ok-btn:active {
    background: var(--success);
    color: white;
}

/* ===== Inspection Items ===== */
.inspection-item {
    padding: var(--spacing);
    border-bottom: 1px solid var(--border);
}

.inspection-item:last-child {
    border-bottom: none;
}

.item-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.item-controls {
    display: flex;
    gap: var(--spacing-sm);
}

.status-btn {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-card);
    font-size: var(--font-size);
    font-weight: 600;
    cursor: pointer;
    min-height: var(--touch-target);
    transition: all var(--transition);
}

.status-btn.ok:hover, .status-btn.ok.active {
    background: var(--success);
    border-color: var(--success);
    color: white;
}

.status-btn.issue:hover, .status-btn.issue.active {
    background: var(--danger);
    border-color: var(--danger);
    color: white;
}

.status-btn.na:hover, .status-btn.na.active {
    background: var(--text-muted);
    border-color: var(--text-muted);
    color: white;
}

/* Item Comment */
.item-comment {
    margin-top: var(--spacing-sm);
}

.item-comment input {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
}

/* Issue indicator */
.item-issue-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: #f8d7da;
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
}

.item-issue-indicator.critical { background: #fadbd8; color: #943126; }
.item-issue-indicator.attention { background: #fdebd0; color: #9c640c; }
.item-issue-indicator.minor { background: #fcf3cf; color: #9a7d0a; }

/* Fire Extinguisher Items */
.adr-expiry-btn {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
    cursor: pointer;
    width: 100%;
    text-align: left;
}

.adr-expiry-btn:hover {
    background: var(--border);
}

/* ===== Summary Screen ===== */
.summary-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing);
    margin-bottom: var(--spacing-lg);
}

.stat-box {
    text-align: center;
    padding: var(--spacing);
    border-radius: var(--radius);
}

.stat-box.ok { background: #d5f5e3; }
.stat-box.issue { background: #fadbd8; }
.stat-box.na { background: #eaecee; }

.stat-number {
    font-size: 32px;
    font-weight: 700;
    display: block;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* Issues List */
.issues-list {
    margin-bottom: var(--spacing-lg);
}

.issues-list h3 {
    margin: 0 0 var(--spacing) 0;
    font-size: var(--font-size-lg);
}

.issue-item {
    padding: var(--spacing);
    border-radius: var(--radius);
    margin-bottom: var(--spacing-sm);
}

.issue-item.critical { background: #fadbd8; border-left: 4px solid var(--danger); }
.issue-item.attention { background: #fdebd0; border-left: 4px solid var(--attention); }
.issue-item.minor { background: #fcf3cf; border-left: 4px solid var(--minor); }

.issue-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.issue-item-title {
    font-weight: 600;
}

.severity-tag {
    padding: 2px 8px;
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.severity-tag.critical { background: var(--danger); color: white; }
.severity-tag.attention { background: var(--attention); color: white; }
.severity-tag.minor { background: var(--minor); color: #212529; }

/* Confirmation Checkbox */
.confirmation-group {
    padding: var(--spacing);
    background: var(--bg);
    border-radius: var(--radius);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing);
    cursor: pointer;
    font-weight: 500;
}

.checkbox-label input {
    width: 24px;
    height: 24px;
    cursor: pointer;
}

/* ===== Confirmation Screen ===== */
.confirmation-card {
    text-align: center;
}

.success-icon {
    margin-bottom: var(--spacing);
}

.report-id {
    font-family: monospace;
    font-size: var(--font-size-lg);
    background: var(--bg);
    padding: var(--spacing);
    border-radius: var(--radius);
    margin: var(--spacing) 0;
}

.submission-status {
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

/* ===== Modal ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 200;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: var(--spacing);
}

.modal[hidden] {
    display: none;
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}

.modal-small {
    max-height: auto;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: var(--bg-card);
}

.modal-header h3 {
    margin: 0;
    font-size: var(--font-size-lg);
}

.modal-close {
    width: var(--touch-target);
    height: var(--touch-target);
    border: none;
    background: transparent;
    font-size: 28px;
    cursor: pointer;
    color: var(--text-muted);
}

.modal-body {
    padding: var(--spacing);
}

.modal-footer {
    display: flex;
    gap: var(--spacing);
    padding: var(--spacing);
    border-top: 1px solid var(--border);
}

.modal-footer .btn {
    flex: 1;
}

/* Severity Buttons */
.severity-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.severity-btn {
    flex: 1;
    padding: var(--spacing);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-card);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    min-height: var(--touch-target);
    transition: all var(--transition);
}

.severity-btn.critical.active {
    background: var(--danger);
    border-color: var(--danger);
    color: white;
}

.severity-btn.attention.active {
    background: var(--attention);
    border-color: var(--attention);
    color: white;
}

.severity-btn.minor.active {
    background: var(--minor);
    border-color: var(--minor);
    color: #212529;
}

/* Character Count */
.char-count {
    display: block;
    text-align: right;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-top: 4px;
}

.char-count.valid {
    color: var(--success);
}

/* Photo Upload */
.photo-upload {
    margin-bottom: var(--spacing-sm);
}

.photo-preview {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.photo-thumb {
    position: relative;
    width: 80px;
    height: 80px;
}

.photo-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius);
}

.photo-thumb button {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: none;
    background: var(--danger);
    color: white;
    font-size: 14px;
    cursor: pointer;
}

/* ===== Toast ===== */
.toast {
    position: fixed;
    bottom: calc(var(--spacing-lg) + env(safe-area-inset-bottom));
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing);
    background: var(--text);
    color: white;
    border-radius: var(--radius);
    font-weight: 500;
    z-index: 300;
    animation: fadeIn 0.3s ease;
}

.toast[hidden] {
    display: none;
}

.toast.error {
    background: var(--danger);
}

.toast.success {
    background: var(--success);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateX(-50%) translateY(20px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ===== Shake Animation ===== */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-5px); }
    40%, 80% { transform: translateX(5px); }
}

.shake {
    animation: shake 0.4s ease;
}

/* ===== Navigation Card ===== */
.navigation-card {
    position: sticky;
    bottom: var(--spacing);
    background: var(--bg-card);
    margin-top: var(--spacing-lg);
}

/* ===== Responsive ===== */
@media (min-width: 600px) {
    .modal-content {
        border-radius: var(--radius-lg);
        margin-bottom: 10vh;
    }

    .modal {
        align-items: center;
    }
}

/* ===== Print Styles ===== */
@media print {
    .app-header,
    .btn,
    .modal {
        display: none !important;
    }

    .screen {
        display: block !important;
    }

    .card {
        box-shadow: none;
        border: 1px solid #000;
    }
}

/* ===== Dark Mode (if preferred) ===== */
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #1a1a1a;
        --bg-card: #2d2d2d;
        --text: #f5f5f5;
        --text-muted: #adb5bd;
        --border: #404040;
    }

    .input-large {
        color-scheme: dark;
    }
}

/* Override dark mode for high visibility */
body.high-contrast {
    --bg: #ffffff;
    --bg-card: #ffffff;
    --text: #000000;
    --border: #000000;
}

/* ===== RTL Support for Arabic ===== */
html[dir="rtl"] {
    direction: rtl;
}

html[dir="rtl"] .header-controls {
    flex-direction: row-reverse;
}

html[dir="rtl"] .status-buttons {
    flex-direction: row-reverse;
}

html[dir="rtl"] .inspection-item {
    text-align: right;
}

html[dir="rtl"] .item-title {
    text-align: right;
}

html[dir="rtl"] .form-group label {
    text-align: right;
}

html[dir="rtl"] .input-large,
html[dir="rtl"] select,
html[dir="rtl"] textarea {
    text-align: right;
}

html[dir="rtl"] .btn svg {
    margin-left: var(--spacing-sm);
    margin-right: 0;
}

html[dir="rtl"] .issue-badge {
    margin-left: 0;
    margin-right: auto;
}

html[dir="rtl"] .summary-item {
    text-align: right;
}

html[dir="rtl"] .modal-header {
    flex-direction: row-reverse;
}