/* CSS Variables */
:root {
    --bg-primary: #1a1d23;
    --bg-secondary: #242831;
    --bg-tertiary: #2d3139;
    --text-primary: #e4e6ea;
    --text-secondary: #b0b3b8;
    --text-muted: #8a8d93;
    --accent-primary: #4a9eff;
    --accent-secondary: #6c5ce7;
    --border-color: #3a3f47;
    --success: #00b894;
    --warning: #fdcb6e;
    --error: #e17055;
    --danger: #d63031;
    --radius: 6px;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
    line-height: 1.5;
    min-height: 100vh;
}

/* Header */
.app-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0.5rem 0.75rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-primary);
}

.version {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-left: 0.5rem;
}

.user-menu {
    display: flex;
    gap: 0.375rem;
}

/* Sections */
.section {
    display: none;
}

.section.active {
    display: block;
}

/* Login/Register */
.login-container {
    min-height: calc(100vh - 50px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem;
}

.login-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.5rem;
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: 1rem;
}

.login-title {
    font-size: 1.75rem;
    margin-bottom: 0.25rem;
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

.login-footer {
    text-align: center;
    margin-top: 0.75rem;
    color: var(--text-muted);
    font-size: 1rem;
}

.login-footer a {
    color: var(--accent-primary);
    text-decoration: none;
}

.login-footer a:hover {
    text-decoration: underline;
}

/* Forms */
.form-group {
    margin-bottom: 0.75rem;
}

.form-label {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 1rem;
}

.form-input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
}

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

.form-input.error {
    border-color: var(--error);
}

.form-error {
    color: var(--error);
    font-size: 0.9rem;
    margin-top: 0.25rem;
    display: none;
}

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

.form-textarea {
    resize: vertical;
    min-height: 100px;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 1rem;
}

/* Larger textarea for edit modal (v2.8) */
.form-textarea-large {
    min-height: 250px;
}

.form-buttons {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    margin-top: 0.75rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, opacity 0.2s;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--accent-secondary);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-secondary);
}

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

.btn-danger:hover:not(:disabled) {
    background: var(--error);
}

.btn-full {
    width: 100%;
}

.btn-icon {
    width: 48px;
    height: 48px;
    padding: 0;
    background: var(--bg-tertiary);
    color: var(--text-muted);
    font-size: 1.6rem;
}

.btn-icon:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.btn.loading {
    pointer-events: none;
    opacity: 0.7;
}

/* Main Container */
.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.75rem;
}

/* Fragment Input */
.fragment-input-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 0.75rem;
    margin-bottom: 2rem;
}

.section-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

/* Fragments Grid */
.fragments-section {
    margin-top: 0.5rem;
}

.fragments-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.search-input {
    font-size: 0.9rem;
    padding: 0.4rem 0.75rem;
    max-width: 300px;
}

.search-input::placeholder {
    font-style: italic;
}

/* Fragment List - Single column layout */
.fragments-grid {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.loading-text, .empty-text {
    color: var(--text-muted);
    text-align: center;
    padding: 1.5rem;
    font-size: 1rem;
}

/* Fragment Card - Horizontal row layout (collapsed) */
.fragment-card {
    padding: 0.6rem 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    position: relative;
    cursor: pointer;
}

.fragment-card:hover {
    border-color: var(--accent-primary);
}

/* Expanded: vertical stack layout */
.fragment-card.expanded {
    min-height: 3rem;
    justify-content: center;
    flex-direction: column;
    align-items: stretch;
}


.fragment-card.expanded .btn-copy {
    position: absolute;
    top: 0.5rem;
    right: 2.5rem;
}
.fragment-card.expanded .fragment-menu {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
}


/* Content section - left side, flexible */
.fragment-content {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.fragment-text {
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 1.05rem;
    color: var(--text-secondary);
    white-space: pre-wrap;
    word-break: break-word;
    line-height: 1.4;
}

.fragment-truncated {
    max-height: 2.8em;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    word-break: break-all; /* Force break even without spaces */
}

.fragment-full {
    max-height: none;
    -webkit-line-clamp: unset;
}

/* Tags section - right side, fixed width area */
.fragment-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    flex-shrink: 0;
    max-width: 250px;
    justify-content: flex-end;
}

.tag {
    background: var(--bg-tertiary);
    color: var(--text-muted);
    padding: 0.125rem 0.5rem;
    border-radius: 4px;
    font-size: 0.85rem;
    white-space: nowrap;
}

/* Meta row (tags + date) - only visible when expanded */
.fragment-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border-color);
    margin-top: 0.5rem;
    width: 100%;
}

.fragment-meta .fragment-tags {
    max-width: none;
    justify-content: flex-start;
}

/* Menu button - far right */
.fragment-menu {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.fragment-menu:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* Copy button */
.btn-copy {
    display: inline-flex;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    font-size: 1.2rem;
    opacity: 0.8;
    transition: opacity 0.2s;
    flex-shrink: 0;
}
.btn-copy:hover {
    opacity: 1;
}

.fragment-date {
    color: var(--text-muted);
    font-size: 0.85rem;
    flex-shrink: 0;
    white-space: nowrap;
}

.fragment-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.25rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    min-width: 120px;
    z-index: 10;
}

.dropdown-menu {
    list-style: none;
}

.dropdown-item {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    background: none;
    border: none;
    color: var(--text-primary);
    text-align: left;
    cursor: pointer;
    font-size: 1rem;
}

.dropdown-item:hover {
    background: var(--bg-secondary);
}

.dropdown-item.delete {
    color: var(--error);
}

/* Admin Panel */
.admin-panel {
    max-width: 700px;
}

.admin-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 0.75rem;
}

.admin-card h3 {
    margin-bottom: 0.5rem;
    font-size: 1.6rem;
}

.invites-list {
    margin-top: 0.5rem;
}

.invite-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius);
    margin-bottom: 0.375rem;
    font-family: monospace;
    font-size: 1.05rem;
}

.invite-item.used {
    opacity: 0.5;
}

.invite-code {
    color: var(--accent-primary);
}

.invite-status {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* User Management */
.users-list {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.user-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius);
}

.user-info {
    flex: 1;
}

.user-email {
    font-weight: 500;
    font-size: 1rem;
}

.user-meta {
    font-size: 1.05rem;
    color: var(--text-muted);
}

.user-role {
    color: var(--accent-primary);
}

.user-actions {
    display: flex;
    gap: 0.375rem;
}

.btn-small {
    padding: 0.25rem 0.5rem;
    font-size: 1.05rem;
}

/* Modals */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal[hidden] {
    display: none;
}

/* Ensure hidden attribute works for fragment elements (CSS display overrides hidden) */
.fragment-meta[hidden],
.fragment-full[hidden],
.fragment-truncated[hidden] {
    display: none !important;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
}

.modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow: auto;
}

.modal-small {
    max-width: 380px;
}

/* Larger modal for edit (v2.8) */
.modal-large {
    max-width: 700px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 1.2rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.75rem;
    cursor: pointer;
    line-height: 1;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 0.75rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.375rem;
    padding: 0.75rem;
    border-top: 1px solid var(--border-color);
}

/* Split footer layout - left and right justified buttons (v2.9) */
.modal-footer-split {
    justify-content: space-between;
}

/* Toast */
#toast-container {
    position: fixed;
    bottom: 0.75rem;
    right: 0.75rem;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.toast {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 0.5rem 0.75rem;
    min-width: 200px;
    box-shadow: var(--shadow);
    animation: slideIn 0.2s ease;
    font-size: 1rem;
}

.toast.success {
    border-left: 3px solid var(--success);
}

.toast.error {
    border-left: 3px solid var(--error);
}

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

/* Settings Menu */
.settings-menu {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.settings-menu-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.625rem 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    cursor: pointer;
    text-align: left;
    transition: background 0.2s;
    font-size: 1rem;
}

.settings-menu-item:hover {
    background: var(--bg-secondary);
}

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

.settings-label {
    flex: 1;
    font-weight: 500;
}

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

.settings-view {
    animation: fadeIn 0.15s ease;
}

.settings-back {
    background: none;
    border: none;
    color: var(--accent-primary);
    cursor: pointer;
    padding: 0;
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.settings-back:hover {
    text-decoration: underline;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Responsive */
@media (max-width: 600px) {
    .fragments-header {
        flex-direction: column;
        align-items: stretch;
    }

    .search-input {
        font-size: 0.9rem;
        padding: 0.4rem 0.75rem;
        max-width: none;
    }

    .search-input::placeholder {
        font-style: italic;
    }
    .form-buttons {
        flex-direction: column;
    }

    .user-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.375rem;
    }

    .user-actions {
        width: 100%;
    }

    .fragment-tags {
        max-width: 150px;
    }
}

/* ============================================
   OFFLINE SUPPORT - v2.26
   ============================================ */

.offline-banner {
    background: #f0ad4e;
    color: #1a1d23;
    text-align: center;
    padding: 0.5rem;
    font-size: 0.85rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.fragment-card.offline {
    border-left: 3px solid #f0ad4e;
    opacity: 0.85;
}

.fragment-card.offline::after {
    content: 'Pending sync';
    display: block;
    font-size: 0.75rem;
    color: #f0ad4e;
    margin-top: 0.5rem;
}

/* ============================================
   PHOTO UPLOAD - v2.30
   ============================================ */

/* Photo preview in forms */
.photo-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.photo-thumb-container {
    position: relative;
    display: inline-block;
}

.photo-thumb {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.photo-remove-btn {
    position: absolute;
    top: -6px;
    right: -6px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--error-color);
    color: white;
    border: none;
    font-size: 14px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.photo-remove-btn:hover {
    background: #ff4444;
}

/* Photo indicator on collapsed cards */
.photo-indicator {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-left: 0.5rem;
    opacity: 0.7;
}

/* Photos in expanded fragment cards */
.fragment-photos {
    display: none;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.fragment-card.expanded .fragment-photos {
    display: flex;
}

.fragment-photos .photo-thumb {
    width: 80px;
    height: 80px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.fragment-photos .photo-thumb:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Button grouping - v2.34 */
.form-buttons-left {
    display: flex;
    gap: 0.5rem;
}

/* Photo upload button - v2.33 */
.btn-upload {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.upload-icon {
    font-size: 1.2rem;
    line-height: 1;
}

/* Mobile: icon only for photo button */
@media (max-width: 600px) {
    .btn-upload .upload-text {
        display: none;
    }
}