/* ============================================
   StayHelp Guest UI - CSS Styles
   Mobile-first, accessible, clean design
   ============================================ */

/* Variables */
:root {
    --color-primary: #64AECF;
    --color-primary-dark: #4A8BA8;
    --color-primary-light: #8EC8E3;
    --color-text: #333333;
    --color-text-muted: #757A7C;
    --color-background: #F5F7FA;
    --color-surface: #FFFFFF;
    --color-border: #E0E0E0;
    --color-success: #4CAF50;
    --color-warning: #FF9800;
    --color-error: #F44336;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);

    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;

    --safe-top: env(safe-area-inset-top, 0);
    --safe-bottom: env(safe-area-inset-bottom, 0);
}

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

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

body {
    font-family: var(--font-family);
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding-top: var(--safe-top);
    padding-bottom: var(--safe-bottom);
}

/* Typography */
h1, h2, h3 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 1.5rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.125rem; }

p { margin-bottom: var(--spacing-md); }

a {
    color: var(--color-primary-dark);
    text-decoration: none;
}

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

/* Header */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header__logo img {
    height: 60px;
    width: auto;
}

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

.header__link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-size: 0.875rem;
    font-weight: 500;
    background: none;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s;
}

.header__link:hover {
    background: var(--color-background);
}

.header__logout {
    display: inline;
}

.header__right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.icon {
    font-size: 1.25rem;
}

/* Navigation icons */
.nav-icon {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

.nav-text {
    display: inline;
}

/* Mobile: Hide text, show only icons */
@media (max-width: 640px) {
    .nav-text {
        font-size: 0;
    }

    .nav-icon {
        margin: 0;
    }
}

/* Header Kiosk Link */
.header__kiosk-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--color-background);
    border-radius: var(--radius-full);
    color: var(--color-primary);
    transition: all 0.2s ease;
}

.header__kiosk-link:hover {
    background: var(--color-primary);
    color: white;
}

/* Language Selector */
.language-selector {
    display: flex;
    gap: 2px;
    background: var(--color-background);
    border-radius: var(--radius-sm);
    padding: 2px;
}

.language-selector__item {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: calc(var(--radius-sm) - 2px);
    color: var(--color-text-muted);
    text-decoration: none;
    transition: all 0.2s;
}

.language-selector__item:hover {
    color: var(--color-primary-dark);
    background: var(--color-surface);
}

.language-selector__item--active {
    background: var(--color-primary);
    color: white;
}

/* Main */
.main {
    flex: 1;
    padding: var(--spacing-lg);
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
}

/* Footer */
.footer {
    padding: var(--spacing-lg);
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.75rem;
}

/* Hero */
.hero {
    position: relative;
    text-align: center;
    padding: var(--spacing-lg) 0;
}

.hero__company-name {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.hero__logo {
    margin-bottom: var(--spacing-lg);
}

.hero__logo-img {
    max-width: 180px;
    height: auto;
}

.hero__title {
    color: var(--color-primary-dark);
    font-size: 1.75rem;
}

.hero__subtitle {
    color: var(--color-text-muted);
}

.hero__intro {
    color: var(--color-text-muted);
    font-size: 1rem;
    line-height: 1.6;
    max-width: 500px;
    margin: 0 auto;
}

/* Kiosk Link */
.kiosk-link {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-surface);
    border-radius: var(--radius-full);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}

.kiosk-link:hover {
    background: var(--color-primary);
    color: white;
    transform: scale(1.1);
}

/* Section Title */
.section-title {
    font-size: 1.25rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary-light);
}

/* Form Row */
.form-row {
    display: flex;
    gap: var(--spacing-md);
}

.form-group--half {
    flex: 1;
}

/* Form Select */
.form-select {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    cursor: pointer;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23757A7C' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    background-size: 20px;
    padding-right: 3rem;
}

.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(100, 174, 207, 0.2);
}

/* Large Textarea */
.form-textarea--large {
    min-height: 150px;
}

/* Divider */
.divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: var(--spacing-xl) 0;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--color-border);
}

.divider__text {
    padding: 0 var(--spacing-md);
    color: var(--color-text-muted);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Review Section */
.review-section {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.review-section__text {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

/* Button Icon */
.btn__icon {
    font-size: 1.25rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

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

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

.btn--secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn--secondary:hover {
    background: var(--color-background);
}

.btn--large {
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: 1.125rem;
}

.btn--block {
    width: 100%;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-lg);
}

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

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    transition: border-color 0.2s, box-shadow 0.2s;
    font-family: inherit;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(100, 174, 207, 0.2);
}

.form-input--large {
    padding: var(--spacing-lg);
    font-size: 1.25rem;
    text-align: center;
}

.form-input--pin {
    letter-spacing: 0.5em;
}

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

.form-hint {
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.field-error {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--color-error);
}

/* Categories Grid */
.category-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-lg);
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
}

.category-card:hover {
    border-color: var(--color-primary-light);
}

.category-card:has(input:checked) {
    border-color: var(--color-primary);
    background: rgba(100, 174, 207, 0.1);
}

.category-card input {
    position: absolute;
    opacity: 0;
}

.category-card__icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.category-card__name {
    font-size: 0.875rem;
    font-weight: 500;
    text-align: center;
}

/* Alerts */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
}

.alert--success {
    background: #E8F5E9;
    color: #2E7D32;
}

.alert--error {
    background: #FFEBEE;
    color: #C62828;
}

/* Login Page */
.login-page {
    min-height: calc(100vh - 200px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.login-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
}

.login-card__header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.login-card__logo {
    height: 60px;
    margin-bottom: var(--spacing-md);
}

.login-card__footer {
    text-align: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.login-card__footer p {
    margin-bottom: var(--spacing-xs);
}

/* Ticket List */
.ticket-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.ticket-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    text-decoration: none;
    color: inherit;
    transition: box-shadow 0.2s;
}

.ticket-card:hover {
    box-shadow: var(--shadow-md);
}

.ticket-card--unread {
    border-left: 4px solid var(--color-primary);
}

.ticket-card__icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.ticket-card__content {
    flex: 1;
    min-width: 0;
}

.ticket-card__subject {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.ticket-card__meta {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.ticket-card__arrow {
    font-size: 1.5rem;
    color: var(--color-text-muted);
}

/* Status Badges */
.status-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
}

.status-badge--new {
    background: #E3F2FD;
    color: #1976D2;
}

.status-badge--inprogress {
    background: #FFF3E0;
    color: #F57C00;
}

.status-badge--waiting {
    background: #F3E5F5;
    color: #7B1FA2;
}

.status-badge--resolved {
    background: #E8F5E9;
    color: #388E3C;
}

.status-badge--closed {
    background: #ECEFF1;
    color: #546E7A;
}

.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.625rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
}

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

/* Ticket Detail */
.ticket-detail {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.ticket-detail__header h1 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.ticket-detail__original {
    font-size: 0.875rem;
    font-style: italic;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.ticket-detail__meta {
    display: flex;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.ticket-detail__description {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.original-text {
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.original-text summary {
    cursor: pointer;
    color: var(--color-primary-dark);
}

/* Conversation */
.conversation {
    margin-bottom: var(--spacing-lg);
}

.message-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.message {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
}

.message--guest {
    background: var(--color-background);
    margin-right: 15%;
}

.message--staff {
    background: rgba(100, 174, 207, 0.15);
    margin-left: 15%;
}

.message__sender {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.message__icon {
    font-size: 1rem;
}

.message__time {
    margin-left: auto;
    font-weight: normal;
    color: var(--color-text-muted);
}

.message__content p {
    margin: 0;
}

/* Reply Form */
.reply-form {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
}

.reply-form h3 {
    margin-bottom: var(--spacing-md);
}

.reply-form__intro {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

/* Ticket Closed */
.ticket-closed {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-surface);
    border-radius: var(--radius-md);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
}

.empty-state__icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.empty-state h2 {
    color: var(--color-text);
}

/* Page Header */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.page-header h1 {
    margin: 0;
}

.back-link {
    font-weight: 500;
    color: var(--color-primary-dark);
}

/* Action Bar */
.action-bar {
    margin-bottom: var(--spacing-lg);
}

/* Quick Link */
.quick-link {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

/* Error Page */
.error-page {
    min-height: calc(100vh - 200px);
    display: flex;
    align-items: center;
    justify-content: center;
}

.error-card {
    text-align: center;
    padding: var(--spacing-xl);
}

.error-card__icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.error-id {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin: var(--spacing-lg) 0;
}

.error-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

/* Utilities */
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

/* File Upload */
.file-upload {
    margin-top: var(--spacing-sm);
}

.file-upload__dropzone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    background: var(--color-surface);
}

.file-upload__dropzone:hover,
.file-upload__dropzone--dragover {
    border-color: var(--color-primary);
    background: rgba(100, 174, 207, 0.05);
}

.file-upload__icon {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.file-upload__text {
    font-size: 1rem;
    color: var(--color-text);
    margin: 0;
}

.file-upload__browse {
    color: var(--color-primary-dark);
    font-weight: 600;
    text-decoration: underline;
}

.file-upload__hint {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin: var(--spacing-sm) 0 0;
}

.file-upload__input {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.file-upload__previews {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.file-preview {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    max-width: 100%;
}

.file-preview__img {
    width: 48px;
    height: 48px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.file-preview__info {
    display: flex;
    flex-direction: column;
    min-width: 0;
    flex: 1;
}

.file-preview__name {
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 150px;
}

.file-preview__size {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.file-preview__remove {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: none;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    color: var(--color-text-muted);
    transition: all 0.2s;
    flex-shrink: 0;
}

.file-preview__remove:hover {
    background: var(--color-error);
    color: white;
}

/* Alert Info */
.alert--info {
    background: rgba(100, 174, 207, 0.15);
    color: var(--color-primary-dark);
}

/* Mobile */
@media (max-width: 480px) {
    .form-row {
        flex-direction: column;
        gap: 0;
    }

    .hero__logo-img {
        max-width: 140px;
    }

    .file-preview__name {
        max-width: 100px;
    }

    /* Header responsivity - icons only on mobile */
    .header {
        padding: var(--spacing-sm);
    }

    .header__logo img {
        height: 28px;
    }

    .header__right {
        gap: var(--spacing-xs);
    }

    .header__nav {
        gap: 0;
    }

    .header__link {
        padding: var(--spacing-xs);
        font-size: 0;  /* Hide text */
    }

    .header__link .icon {
        font-size: 1.25rem;
    }

    /* Language selector compact */
    .language-selector {
        padding: 1px;
    }

    .language-selector__item {
        padding: var(--spacing-xs);
        font-size: 0.65rem;
    }

    .header__kiosk-link {
        width: 32px;
        height: 32px;
    }

    .header__kiosk-link svg {
        width: 16px;
        height: 16px;
    }
}

/* Tablet and up */
@media (min-width: 768px) {
    .main {
        padding: var(--spacing-xl);
    }

    .category-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }

    .hero__logo-img {
        max-width: 220px;
    }
}

/* ============================================
   Attachments
   ============================================ */

.ticket-detail__attachments {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--color-background);
    border-radius: var(--radius-md);
}

.ticket-detail__attachments h3 {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.attachment-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.attachment-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--color-text);
    transition: all 0.2s ease;
    max-width: 100px;
}

.attachment-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.attachment-thumbnail {
    width: 80px;
    height: 60px;
    object-fit: cover;
    border-radius: var(--radius-sm);
}

.attachment-icon {
    font-size: 2rem;
    line-height: 1;
}

.attachment-name {
    font-size: 0.7rem;
    text-align: center;
    word-break: break-word;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}