/* ============================================
   MY TO-DO LIST APP - STYLE SHEET
   Professional Task Manager
   ============================================ */

/* ---------- CSS CUSTOM PROPERTIES ---------- */
:root {
    /* Brand Colors */
    --primary: #0B1F3A;
    --primary-light: #143556;
    --primary-dark: #071428;
    --secondary: #D4A017;
    --secondary-light: #E0B84D;
    --secondary-dark: #B08612;

    /* Backgrounds */
    --bg-main: #FFFFFF;
    --bg-card: #F4F6F8;
    --bg-hover: #EAEFF4;
    --bg-input: #FFFFFF;
    --bg-header: #FFFFFF;

    /* Text */
    --text-primary: #1A1A2E;
    --text-secondary: #5A6474;
    --text-muted: #8B95A5;
    --text-inverse: #FFFFFF;

    /* Borders */
    --border-color: #DEE3EA;
    --border-light: #E8ECF0;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(11, 31, 58, 0.06);
    --shadow-md: 0 4px 12px rgba(11, 31, 58, 0.08);
    --shadow-lg: 0 8px 30px rgba(11, 31, 58, 0.12);
    --shadow-xl: 0 12px 40px rgba(11, 31, 58, 0.16);

    /* Status Colors */
    --success: #27AE60;
    --success-bg: #E8F8EE;
    --warning: #F39C12;
    --warning-bg: #FEF3E0;
    --danger: #E74C3C;
    --danger-bg: #FDECEB;
    --info: #3498DB;
    --info-bg: #E8F4FD;

    /* Priority Colors */
    --priority-high: #E74C3C;
    --priority-high-bg: #FDECEB;
    --priority-medium: #F39C12;
    --priority-medium-bg: #FEF3E0;
    --priority-low: #27AE60;
    --priority-low-bg: #E8F8EE;

    /* Category Colors */
    --cat-work: #3498DB;
    --cat-personal: #9B59B6;
    --cat-shopping: #E67E22;
    --cat-business: #1ABC9C;
    --cat-health: #E74C3C;
    --cat-education: #2ECC71;

    /* Spacing */
    --header-height: 80px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --radius-full: 50%;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;

    /* Font */
    --font-family: 'Segoe UI', 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ---------- DARK MODE VARIABLES ---------- */
body.dark-mode {
    --bg-main: #0D1B2A;
    --bg-card: #1B2838;
    --bg-hover: #243447;
    --bg-input: #1B2838;
    --bg-header: #0D1B2A;
    --text-primary: #E8ECF0;
    --text-secondary: #A0AEBB;
    --text-muted: #6B7B8D;
    --border-color: #2C3E50;
    --border-light: #243447;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.5);
    --success-bg: #1A3D2A;
    --warning-bg: #3D3018;
    --danger-bg: #3D1A1A;
    --info-bg: #1A2D3D;
    --priority-high-bg: #3D1A1A;
    --priority-medium-bg: #3D3018;
    --priority-low-bg: #1A3D2A;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + 20px);
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    cursor: pointer;
    border: none;
    outline: none;
    font-family: inherit;
    font-size: inherit;
}

input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
    outline: none;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* ---------- HEADER ---------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
    gap: var(--spacing-lg);
}

/* Logo Area */
.header-left {
    flex-shrink: 0;
}

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

.logo-icon {
    width: 46px;
    height: 46px;
    background: var(--primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.logo-icon svg {
    width: 36px;
    height: 36px;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.app-title {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

body.dark-mode .app-title {
    color: var(--secondary);
}

.app-subtitle {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 500;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

/* Search Bar */
.header-center {
    flex: 1;
    max-width: 500px;
}

.search-container {
    position: relative;
    width: 100%;
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: 10px 16px 10px 44px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-normal);
}

.search-input:focus {
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(212, 160, 23, 0.15);
}

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

/* Ad Banner */
.header-right {
    flex-shrink: 0;
}

.ad-banner {
    width: 728px;
    max-width: 100%;
    height: 90px;
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.ad-label {
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.ad-text {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-align: center;
    padding: 0 var(--spacing-md);
}

/* ---------- MAIN CONTENT ---------- */
.main-content {
    margin-top: var(--header-height);
    padding: var(--spacing-xl) var(--spacing-lg);
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
    flex: 1;
}

/* ---------- DASHBOARD ---------- */
.dashboard {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-normal);
    border: 1px solid var(--border-light);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-total .stat-icon {
    background: var(--info-bg);
    color: var(--info);
}

.stat-pending .stat-icon {
    background: var(--warning-bg);
    color: var(--warning);
}

.stat-completed .stat-icon {
    background: var(--success-bg);
    color: var(--success);
}

.stat-high .stat-icon {
    background: var(--priority-high-bg);
    color: var(--priority-high);
}

.stat-overdue .stat-icon {
    background: var(--danger-bg);
    color: var(--danger);
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ---------- SECTION TITLE ---------- */
.section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.section-title svg {
    color: var(--secondary);
}

/* ---------- FORM SECTION ---------- */
.form-section {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-light);
}

.task-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group-full {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.required {
    color: var(--danger);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 10px 14px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-normal);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(212, 160, 23, 0.15);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-group select {
    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 24 24' fill='none' stroke='%235A6474' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.form-actions {
    display: flex;
    gap: var(--spacing-md);
}

/* ---------- BUTTONS ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--primary-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

body.dark-mode .btn-primary {
    background: var(--secondary);
    color: var(--primary);
}

body.dark-mode .btn-primary:hover {
    background: var(--secondary-light);
}

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

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

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

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--bg-hover);
}

body.dark-mode .btn-outline:hover {
    border-color: var(--secondary);
    color: var(--secondary);
}

.btn-danger-outline {
    background: transparent;
    color: var(--danger);
    border: 2px solid var(--danger);
}

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

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

.btn-danger:hover {
    background: #C0392B;
    box-shadow: var(--shadow-md);
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-full);
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

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

/* ---------- TOOLBAR ---------- */
.toolbar {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.toolbar-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.toolbar-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-right: var(--spacing-sm);
    flex-shrink: 0;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    width: 100%;
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.filter-btn {
    padding: 6px 14px;
    border-radius: var(--radius-xl);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
    color: var(--primary);
}

.filter-btn.active {
    background: var(--primary);
    color: var(--text-inverse);
    border-color: var(--primary);
}

body.dark-mode .filter-btn.active {
    background: var(--secondary);
    color: var(--primary);
    border-color: var(--secondary);
}

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

.sort-select {
    padding: 8px 36px 8px 14px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 500;
    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 24 24' fill='none' stroke='%235A6474' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    transition: border-color var(--transition-fast);
}

.sort-select:focus {
    border-color: var(--secondary);
}

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

/* ---------- DROPDOWNS ---------- */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 180px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-fast);
}

.dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: block;
    width: 100%;
    padding: 10px 16px;
    text-align: left;
    font-size: 0.85rem;
    color: var(--text-primary);
    background: transparent;
    transition: background var(--transition-fast);
}

.dropdown-item:first-child {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.dropdown-item:last-child {
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

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

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

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

/* ---------- TASK LIST ---------- */
.task-list-section {
    margin-bottom: var(--spacing-xl);
}

.task-list-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

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

/* ---------- TASK CARD ---------- */
.task-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition-normal);
    position: relative;
    animation: fadeSlideIn 0.3s ease;
}

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

.task-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--border-color);
}

.task-card.completed {
    opacity: 0.65;
}

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

.task-card.pinned {
    border-left: 4px solid var(--secondary);
    background: linear-gradient(135deg, var(--bg-card), rgba(212, 160, 23, 0.04));
}

.task-card.archived {
    border-left: 4px solid var(--text-muted);
    opacity: 0.7;
}

.task-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.task-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
}

.task-description {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}

.task-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    align-items: center;
}

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

.task-meta-item svg {
    width: 14px;
    height: 14px;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: var(--radius-xl);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.badge-priority-high {
    background: var(--priority-high-bg);
    color: var(--priority-high);
}

.badge-priority-medium {
    background: var(--priority-medium-bg);
    color: var(--priority-medium);
}

.badge-priority-low {
    background: var(--priority-low-bg);
    color: var(--priority-low);
}

.badge-status-completed {
    background: var(--success-bg);
    color: var(--success);
}

.badge-status-pending {
    background: var(--warning-bg);
    color: var(--warning);
}

.badge-status-archived {
    background: var(--bg-hover);
    color: var(--text-muted);
}

.badge-category {
    background: var(--info-bg);
    color: var(--info);
}

.badge-category[data-category="work"] {
    background: rgba(52, 152, 219, 0.12);
    color: var(--cat-work);
}

.badge-category[data-category="personal"] {
    background: rgba(155, 89, 182, 0.12);
    color: var(--cat-personal);
}

.badge-category[data-category="shopping"] {
    background: rgba(230, 126, 34, 0.12);
    color: var(--cat-shopping);
}

.badge-category[data-category="business"] {
    background: rgba(26, 188, 156, 0.12);
    color: var(--cat-business);
}

.badge-category[data-category="health"] {
    background: rgba(231, 76, 60, 0.12);
    color: var(--cat-health);
}

.badge-category[data-category="education"] {
    background: rgba(46, 204, 113, 0.12);
    color: var(--cat-education);
}

/* Task Actions */
.task-actions {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.task-action-btn {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.task-action-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border-color);
}

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

.task-action-btn.action-complete:hover {
    color: var(--success);
    background: var(--success-bg);
}

.task-action-btn.action-pin:hover {
    color: var(--secondary);
    background: rgba(212, 160, 23, 0.12);
}

.task-action-btn.action-pin.active {
    color: var(--secondary);
    background: rgba(212, 160, 23, 0.15);
}

.task-action-btn.action-edit:hover {
    color: var(--info);
    background: var(--info-bg);
}

.task-action-btn.action-duplicate:hover {
    color: var(--cat-personal);
    background: rgba(155, 89, 182, 0.12);
}

.task-action-btn.action-archive:hover {
    color: var(--warning);
    background: var(--warning-bg);
}

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

/* ---------- EMPTY STATE ---------- */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xxl) var(--spacing-lg);
    text-align: center;
}

.empty-illustration {
    margin-bottom: var(--spacing-lg);
    opacity: 0.7;
}

.empty-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.empty-text {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ---------- FAB (Floating Action Button) ---------- */
.fab {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: var(--primary);
    color: var(--text-inverse);
    box-shadow: var(--shadow-lg);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 500;
    transition: all var(--transition-fast);
    border: none;
}

body.dark-mode .fab {
    background: var(--secondary);
    color: var(--primary);
}

.fab:hover {
    transform: scale(1.1) rotate(90deg);
    box-shadow: var(--shadow-xl);
}

/* ---------- MODAL ---------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(4px);
    animation: fadeIn 0.2s ease;
}

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

.modal {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    max-width: 420px;
    width: 90%;
    text-align: center;
    box-shadow: var(--shadow-xl);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

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

.modal-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.modal-message {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

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

.modal-actions .btn {
    min-width: 100px;
}

/* ---------- FOOTER ---------- */
.footer {
    background: var(--primary);
    color: var(--text-inverse);
    margin-top: auto;
}

.footer-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xxl) var(--spacing-lg);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.footer-heading {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.footer-heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--secondary);
    border-radius: 1px;
}

.footer-text {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
}

.footer-link {
    color: var(--secondary);
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--secondary-light);
    text-decoration: underline;
}

.footer-developer {
    font-size: 1.1rem;
    font-weight: 700;
    display: inline-block;
    margin-bottom: var(--spacing-sm);
}

.footer-role {
    font-size: 0.8rem;
    opacity: 0.7;
}

.footer-websites {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-websites li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.globe-icon {
    flex-shrink: 0;
    color: var(--secondary);
}

/* Footer Bottom */
.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg) var(--spacing-xl);
}

.footer-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.15);
    margin-bottom: var(--spacing-lg);
}

.footer-copyright {
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
    line-height: 1.8;
}

/* ---------- RESPONSIVE: TABLET (max-width: 1024px) ---------- */
@media (max-width: 1024px) {
    .header-inner {
        flex-wrap: wrap;
        height: auto;
        padding: var(--spacing-md) var(--spacing-lg);
        gap: var(--spacing-sm);
    }

    .header {
        height: auto;
        min-height: var(--header-height);
    }

    .header-center {
        order: 3;
        max-width: 100%;
        width: 100%;
    }

    .header-right {
        display: none;
    }

    .dashboard {
        grid-template-columns: repeat(3, 1fr);
    }

    .form-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-inner {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

/* ---------- RESPONSIVE: MOBILE (max-width: 768px) ---------- */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 16px;
        --spacing-xl: 20px;
        --header-height: 70px;
    }

    .header-inner {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .logo-text {
        display: none;
    }

    .dashboard {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
    }

    .toolbar-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .filter-group {
        flex-direction: column;
        align-items: flex-start;
    }

    .filter-buttons {
        width: 100%;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: var(--spacing-xs);
    }

    .filter-btn {
        flex-shrink: 0;
    }

    .action-group {
        flex-wrap: wrap;
        width: 100%;
        justify-content: flex-start;
    }

    .task-card-header {
        flex-direction: column;
    }

    .task-actions {
        margin-top: var(--spacing-sm);
    }

    .fab {
        display: flex !important;
    }

    .stat-card {
        padding: var(--spacing-md);
    }

    .stat-number {
        font-size: 1.4rem;
    }

    .stat-label {
        font-size: 0.7rem;
    }
}

/* ---------- RESPONSIVE: SMALL MOBILE (max-width: 480px) ---------- */
@media (max-width: 480px) {
    .dashboard {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-sm);
    }

    .stat-card {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
        padding: var(--spacing-md) var(--spacing-sm);
    }

    .stat-icon {
        width: 40px;
        height: 40px;
    }

    .task-card {
        padding: var(--spacing-md);
    }

    .task-meta {
        gap: 4px;
    }

    .main-content {
        padding: var(--spacing-md) var(--spacing-sm);
    }

    .modal {
        width: 95%;
        padding: var(--spacing-lg);
    }
}

/* ---------- SCROLLBAR STYLING ---------- */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-card);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ---------- PRINT STYLES ---------- */
@media print {
    .header,
    .fab,
    .toolbar,
    .form-section,
    .footer,
    .task-actions {
        display: none !important;
    }

    .main-content {
        margin-top: 0;
    }

    .task-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
}