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

:root {
    --bg-deep: #0a0a1a;
    --bg-primary: #12122a;
    --bg-secondary: #1a1a3e;
    --bg-card: #1e1e42;
    --bg-hover: #262652;
    --text-primary: #e8e8f0;
    --text-secondary: #9898b8;
    --text-muted: #6868a0;
    --accent: #e94560;
    --accent-light: #ff6b81;
    --accent-glow: rgba(233, 69, 96, 0.25);
    --border: #2a2a52;
    --border-light: #3a3a62;
    --success: #4caf50;
    --success-bg: rgba(76, 175, 80, 0.12);
    --warning: #ffc107;
    --warning-bg: rgba(255, 193, 7, 0.12);
    --danger: #f44336;
    --danger-bg: rgba(244, 67, 54, 0.12);
    --info: #64b5f6;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 30px var(--accent-glow);
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --tag-bg: rgba(100, 181, 246, 0.15);
    --tag-color: #64b5f6;
    --toolbar-bg: var(--bg-secondary);
    --input-bg: var(--bg-deep);
}

[data-theme="light"] {
    --bg-deep: #eef0f5;
    --bg-primary: #ffffff;
    --bg-secondary: #f5f6fa;
    --bg-card: #ffffff;
    --bg-hover: #e6e8f0;
    --text-primary: #0b0b1a;
    --text-secondary: #3a3a5c;
    --text-muted: #6a6a8e;
    --accent: #d6304a;
    --accent-light: #b82842;
    --accent-glow: rgba(214, 48, 74, 0.15);
    --border: #c8cade;
    --border-light: #b0b2c8;
    --success: #2e7d32;
    --success-bg: rgba(46, 125, 50, 0.10);
    --warning: #e6a800;
    --warning-bg: rgba(230, 168, 0, 0.10);
    --danger: #d32f2f;
    --danger-bg: rgba(211, 47, 47, 0.10);
    --shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    --tag-bg: rgba(25, 118, 210, 0.10);
    --tag-color: #1565c0;
    --toolbar-bg: var(--bg-secondary);
    --input-bg: #ffffff;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-deep);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

#particles {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(ellipse 80% 60% at 0% 20%, rgba(233, 69, 96, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse 80% 60% at 100% 80%, rgba(255, 138, 92, 0.04) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 50% 50%, rgba(100, 181, 246, 0.03) 0%, transparent 50%);
}

.app-wrapper {
    display: flex;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* ─── Sidebar ─── */
.sidebar {
    width: 240px;
    flex-shrink: 0;
    background: var(--bg-primary);
    border-right: 1px solid var(--border);
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 4px 8px;
}

.brand-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.brand-icon svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 0 12px var(--accent-glow));
}

.brand-text h1 {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent), #ff8a5c);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

.brand-text span {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.sidebar-stats {
    display: flex;
    gap: 8px;
    padding: 0 4px;
}

.stat-item {
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 8px;
    text-align: center;
    transition: var(--transition);
}

.stat-item:hover {
    border-color: var(--border-light);
    background: var(--bg-hover);
}

.stat-value {
    display: block;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 12px 16px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 500;
    font-family: inherit;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    text-align: left;
}

.nav-btn:hover {
    background: rgba(233, 69, 96, 0.06);
    color: var(--text-primary);
}

.nav-btn.active {
    background: var(--accent-glow);
    color: var(--accent-light);
    box-shadow: inset 3px 0 0 var(--accent);
}

.nav-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.nav-icon svg {
    width: 100%;
    height: 100%;
}

.sidebar-export {
    display: flex;
    gap: 6px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
}

.export-link {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition);
    background: var(--bg-secondary);
}

.export-link svg {
    width: 14px;
    height: 14px;
}

.export-link:hover {
    border-color: var(--accent);
    color: var(--accent-light);
    background: var(--accent-glow);
}

/* ─── Sidebar Sections (Tags, Chart) ─── */
.sidebar-section {
    padding: 0 4px;
}

.sidebar-section-title {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.sidebar-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 500;
    background: var(--tag-bg);
    color: var(--tag-color);
    border: 1px solid rgba(100, 181, 246, 0.2);
    cursor: pointer;
    transition: var(--transition);
}

.sidebar-tag:hover {
    background: var(--accent-glow);
    color: var(--accent-light);
    border-color: rgba(233, 69, 96, 0.3);
}

.sidebar-tag.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.sidebar-tag .tag-count {
    font-weight: 700;
    opacity: 0.8;
}

.chart-container {
    margin-top: 4px;
    padding: 8px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.chart-container canvas {
    max-height: 140px;
    max-width: 100%;
}

.theme-toggle {
    flex: 0 0 auto !important;
    width: 40px;
    padding: 8px !important;
}

/* ─── Task Toolbar (Search + Filters) ─── */
.task-toolbar {
    margin-bottom: 16px;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px 14px;
    margin-bottom: 10px;
    transition: var(--transition);
}

.search-box:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.search-icon {
    width: 18px;
    height: 18px;
    color: var(--text-muted);
    flex-shrink: 0;
}

.search-box input {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 0.88rem;
    font-family: inherit;
    outline: none;
}

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

.filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.chip {
    padding: 4px 12px;
    border-radius: 20px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
}

.chip:hover {
    border-color: var(--accent);
    color: var(--accent-light);
}

.chip.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

/* ─── Tags in Task Items ─── */
.task-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 6px;
}

.task-tag {
    font-size: 0.65rem;
    font-weight: 500;
    padding: 2px 8px;
    border-radius: 12px;
    background: var(--tag-bg);
    color: var(--tag-color);
    border: 1px solid rgba(100, 181, 246, 0.15);
}

/* ─── Subtask Progress ─── */
.subtask-progress {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 4px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.subtask-progress-bar {
    display: inline-block;
    width: 60px;
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    overflow: hidden;
    vertical-align: middle;
}

.subtask-progress-bar span {
    display: block;
    height: 100%;
    background: var(--accent);
    border-radius: 2px;
    transition: width 0.3s ease;
}

/* ─── Subtask Editor (Modal) ─── */
.subtask-editor {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px;
    background: var(--input-bg);
}

.subtask-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 4px 4px 8px;
    border-radius: 4px;
    margin-bottom: 2px;
    transition: var(--transition);
}

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

.subtask-item input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-light);
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition);
    flex-shrink: 0;
    position: relative;
    background: var(--bg-secondary);
}

.subtask-item input[type="checkbox"]:checked {
    background: var(--accent);
    border-color: var(--accent);
}

.subtask-item input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    inset: 2px;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/contain no-repeat;
}

.subtask-item .subtask-text {
    flex: 1;
    font-size: 0.82rem;
    color: var(--text-primary);
}

.subtask-item .subtask-text.done {
    text-decoration: line-through;
    color: var(--text-muted);
}

.subtask-item .subtask-del {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 3px;
    font-size: 1rem;
    line-height: 1;
    transition: var(--transition);
    opacity: 0;
}

.subtask-item:hover .subtask-del {
    opacity: 1;
}

.subtask-item .subtask-del:hover {
    color: var(--danger);
    background: var(--danger-bg);
}

.subtask-add-row {
    display: flex;
    gap: 6px;
    margin-top: 6px;
}

.subtask-add-row input {
    flex: 1;
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 0.82rem;
    font-family: inherit;
    outline: none;
}

.subtask-add-row input:focus {
    border-color: var(--accent);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
}

/* ─── Main Content ─── */
.main-content {
    flex: 1;
    padding: 32px 40px;
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
}

.panel-header {
    margin-bottom: 24px;
}

.panel-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
}

.panel-icon {
    width: 24px;
    height: 24px;
    color: var(--accent);
}

.panel-icon svg {
    width: 100%;
    height: 100%;
}

.panel-sub {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-top: 4px;
    margin-left: 34px;
}

/* ─── Tabs ─── */
.tab-content {
    display: none;
    animation: panelEnter 0.35s ease;
}

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

@keyframes panelEnter {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ─── Card ─── */
.card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    backdrop-filter: blur(20px);
    transition: var(--transition);
}

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

/* ─── Prioridad colors ─── */
.task-item.prioridad-alta {
    border-left: 3px solid var(--danger);
    background: linear-gradient(135deg, var(--danger-bg), transparent);
}

.task-item.prioridad-media {
    border-left: 3px solid var(--warning);
    background: linear-gradient(135deg, var(--warning-bg), transparent);
}

.task-item.prioridad-baja {
    border-left: 3px solid var(--success);
    background: linear-gradient(135deg, var(--success-bg), transparent);
}

/* ─── Badges ─── */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-alta {
    background: var(--danger-bg);
    color: #ff8a80;
    border: 1px solid rgba(244, 67, 54, 0.25);
}

.badge-media {
    background: var(--warning-bg);
    color: #ffd54f;
    border: 1px solid rgba(255, 193, 7, 0.25);
}

.badge-baja {
    background: var(--success-bg);
    color: #81c784;
    border: 1px solid rgba(76, 175, 80, 0.25);
}

/* ─── Drag Handle ─── */
.task-drag {
    cursor: grab;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    padding: 4px;
    border-radius: 4px;
    transition: var(--transition);
    touch-action: none;
    flex-shrink: 0;
}

.task-drag:hover {
    color: var(--text-secondary);
    background: var(--bg-hover);
}

.task-drag svg {
    width: 16px;
    height: 16px;
}

.task-item.sorting {
    opacity: 0.4;
}

.task-item.sortable-chosen {
    border-color: var(--accent) !important;
    box-shadow: var(--shadow-glow);
    background: var(--bg-hover) !important;
    transform: scale(1.02);
}

.task-item.sortable-ghost {
    opacity: 0.2;
    background: var(--accent-glow) !important;
    border: 2px dashed var(--accent) !important;
}

.sortable-drag .task-item {
    border-color: var(--accent) !important;
    box-shadow: var(--shadow-glow);
}

/* ─── Edit / Delete Buttons ─── */
.task-edit,
.task-delete {
    opacity: 0;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all var(--transition);
    flex-shrink: 0;
    margin-top: 2px;
}

.task-edit svg,
.task-delete svg {
    width: 15px;
    height: 15px;
}

.task-item:hover .task-edit,
.task-item:hover .task-delete {
    opacity: 1;
}

.task-edit:hover {
    color: var(--accent-light);
    background: var(--accent-glow);
}

.task-delete:hover {
    color: var(--danger);
    background: var(--danger-bg);
}

/* ─── Clear Completed ─── */
.chip-danger {
    color: var(--danger) !important;
    border-color: rgba(244,67,54,0.25) !important;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.chip-danger:hover {
    background: var(--danger-bg) !important;
    border-color: var(--danger) !important;
}

/* ─── Detail Modal ─── */
.modal-detail {
    max-width: 560px;
}

.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.detail-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.detail-full {
    grid-column: 1 / -1;
}

.detail-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.detail-value {
    font-size: 0.92rem;
    color: var(--text-primary);
    line-height: 1.5;
}

.detail-subtasks {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-top: 4px;
}

.detail-subtask {
    font-size: 0.85rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    border-radius: 4px;
    background: var(--bg-secondary);
}

.detail-subtask.done {
    text-decoration: line-through;
    color: var(--text-muted);
}

.detail-subcheck {
    font-size: 0.8rem;
    width: 16px;
    text-align: center;
    flex-shrink: 0;
}

.detail-subtask.done .detail-subcheck {
    color: var(--success);
}

/* ─── Modal ─── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    padding: 20px;
}

.modal-overlay.show {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    width: 100%;
    max-width: 520px;
    transform: scale(0.95) translateY(10px);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.modal-overlay.show .modal {
    transform: scale(1) translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.modal-header h3 {
    font-size: 1.2rem;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
    transition: var(--transition);
    display: flex;
}

.modal-close svg {
    width: 20px;
    height: 20px;
}

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

.modal-actions {
    display: flex;
    gap: 10px;
    margin-top: 24px;
    justify-content: flex-end;
}

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

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

/* ─── Task List ─── */
.section-title {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.task-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 14px 16px;
    border-radius: var(--radius);
    margin-bottom: 8px;
    transition: all var(--transition);
    border: 1px solid transparent;
    animation: taskSlide 0.3s ease;
}

@keyframes taskSlide {
    from { opacity: 0; transform: translateX(-8px); }
    to { opacity: 1; transform: translateX(0); }
}

.task-item:hover {
    border-color: var(--border);
    background: rgba(30, 30, 66, 0.5);
    transform: translateX(4px);
}

.task-check {
    margin-top: 3px;
    position: relative;
}

.task-check input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    border: 2px solid var(--border-light);
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    background: var(--bg-secondary);
}

.task-check input[type="checkbox"]:hover {
    border-color: var(--accent);
    background: var(--accent-glow);
}

.task-check input[type="checkbox"]:checked {
    background: var(--accent);
    border-color: var(--accent);
}

.task-check input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    inset: 3px;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/contain no-repeat;
}

.task-check input[type="checkbox"]:checked:disabled {
    opacity: 0.5;
    cursor: default;
}

.task-body {
    flex: 1;
    min-width: 0;
}

.task-title {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 3px;
    transition: var(--transition);
}

.task-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    line-height: 1.5;
}

.task-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.task-date {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* ─── Completada ─── */
.task-item.completada {
    opacity: 0.45;
}

.task-item.completada .task-title {
    text-decoration: line-through;
    color: var(--text-muted);
}

.task-item.completada:hover {
    opacity: 0.6;
}

/* ─── Empty State ─── */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state .empty-icon {
    font-size: 3.5rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.empty-state .empty-hint {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 8px;
    opacity: 0.7;
}

/* ─── Forms ─── */
.form-card {
    max-width: 580px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 20px;
    position: relative;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-deep);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.92rem;
    transition: all var(--transition);
    font-family: inherit;
}

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

.form-group textarea {
    min-height: 100px;
    resize: vertical;
    line-height: 1.5;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    padding-right: 40px;
}

.form-group select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 8px;
}

.select-wrapper {
    position: relative;
}

.select-arrow {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--text-muted);
    pointer-events: none;
}

.select-arrow svg {
    width: 100%;
    height: 100%;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* ─── Buttons ─── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), #d63850);
    color: #fff;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--accent-light), var(--accent));
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

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

.btn-block {
    width: 100%;
}

/* ─── Chat ─── */
.chat-card {
    padding: 0;
    overflow: hidden;
}

.chat-messages {
    height: 460px;
    overflow-y: auto;
    padding: 20px;
    background: var(--bg-deep);
    border-bottom: 1px solid var(--border);
}

.chat-messages::-webkit-scrollbar { width: 5px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
.chat-messages::-webkit-scrollbar-thumb:hover { background: var(--border-light); }

.chat-message {
    margin-bottom: 16px;
    display: flex;
    gap: 10px;
    align-items: flex-start;
    animation: msgSlide 0.3s ease;
}

@keyframes msgSlide {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.chat-message.user {
    flex-direction: row-reverse;
}

.chat-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.chat-avatar svg {
    width: 16px;
    height: 16px;
    color: var(--text-muted);
}

.chat-message.user .chat-avatar {
    background: var(--accent-glow);
    border-color: rgba(233, 69, 96, 0.3);
}

.chat-message.user .chat-avatar svg {
    color: var(--accent-light);
}

.chat-bubble {
    max-width: 75%;
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    line-height: 1.6;
}

.chat-message.user .chat-bubble {
    background: linear-gradient(135deg, var(--accent), #d63850);
    color: #fff;
    border-bottom-right-radius: 4px;
}

.chat-message.assistant .chat-bubble {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-bottom-left-radius: 4px;
}

.bubble-content {
    word-wrap: break-word;
}

.bubble-content strong {
    color: var(--accent-light);
}

.chat-input-area {
    display: flex;
    gap: 10px;
    padding: 16px 20px;
    background: var(--bg-primary);
}

.chat-input-area input {
    flex: 1;
    padding: 12px 16px;
    background: var(--bg-deep);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: inherit;
    transition: all var(--transition);
}

.chat-input-area input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

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

/* ─── Loading ─── */
.loading {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.typing-indicator {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.typing-indicator span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-muted);
    animation: typing 1.4s infinite ease-in-out;
}

.typing-indicator span:nth-child(1) { animation-delay: 0s; }
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.3; }
    30% { transform: translateY(-6px); opacity: 1; }
}

.loading-spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

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

/* ─── Toast ─── */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 14px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-weight: 500;
    z-index: 1000;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.toast.success {
    background: rgba(76, 175, 80, 0.15);
    border: 1px solid rgba(76, 175, 80, 0.3);
    color: #81c784;
    box-shadow: 0 4px 20px rgba(76, 175, 80, 0.15);
}

.toast.error {
    background: var(--danger-bg);
    border: 1px solid rgba(244, 67, 54, 0.3);
    color: #ff8a80;
    box-shadow: 0 4px 20px rgba(244, 67, 54, 0.15);
}

/* ─── Pagination ─── */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 16px 0 8px;
    flex-wrap: wrap;
}

.page-btn {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    color: var(--text-muted);
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
}

.page-btn:hover:not(:disabled) {
    background: rgba(233,69,96,0.15);
    color: var(--accent);
    border-color: rgba(233,69,96,0.3);
}

.page-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.page-btn.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    font-weight: 600;
}

.page-numbers {
    display: flex;
    align-items: center;
    gap: 4px;
}

.page-ellipsis {
    color: var(--text-muted);
    padding: 0 4px;
    font-size: 0.85rem;
}

.page-btn.prev,
.page-btn.next {
    padding: 6px 14px;
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
    .app-wrapper {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        position: static;
        flex-direction: row;
        flex-wrap: wrap;
        padding: 16px;
        gap: 12px;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .sidebar-brand {
        width: 100%;
    }

    .sidebar-stats {
        flex: 1;
        min-width: 140px;
    }

    .sidebar-nav {
        flex-direction: row;
        width: 100%;
        flex: none;
    }

    .sidebar-section {
        width: 100%;
    }

    .nav-btn {
        justify-content: center;
        padding: 10px;
        font-size: 0.78rem;
    }

    .nav-btn .nav-label {
        display: none;
    }

    .nav-btn.active {
        box-shadow: none;
        border-bottom: 2px solid var(--accent);
        border-radius: 0;
    }

    .sidebar-export {
        width: 100%;
    }

    .main-content {
        padding: 20px 16px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .chat-messages {
        height: 360px;
    }

    .chat-bubble {
        max-width: 90%;
    }

    .panel-header h2 {
        font-size: 1.25rem;
    }
}

@media (max-width: 480px) {
    .sidebar {
        padding: 12px;
    }

    .sidebar-stats {
        min-width: 100px;
    }

    .stat-item {
        padding: 8px 6px;
    }

    .stat-value {
        font-size: 1.1rem;
    }

    .main-content {
        padding: 16px 12px;
    }

    .card {
        padding: 16px;
    }

    .task-item {
        padding: 12px;
    }
}