@import url('https://fonts.googleapis.com/css2?family=Patrick+Hand&display=swap');

/* =========================================
   DESIGN SYSTEM — Task Manager
   ========================================= */
:root {
    /* Colors */
    --color-bg: #f0f7ff;
    --color-surface: #ffffff;
    --color-surface-2: #f8f9fa;
    --color-sidebar: #ffffff;
    --color-border: #daeeff;
    --color-border-strong: #b3e5fc;

    /* Accent (pastel blue) */
    --color-accent: #4fc3f7;
    --color-accent-dark: #0288d1;
    --color-accent-light: #e1f5fe;

    /* Pastel palette */
    --color-pink: #f8bbd0;
    --color-pink-dark: #e91e8c;
    --color-green: #c8e6c9;
    --color-green-dark: #388e3c;
    --color-yellow: #fff9c4;
    --color-yellow-dark: #f57f17;
    --color-purple: #e1bee7;
    --color-purple-dark: #7b1fa2;

    /* Text */
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --text-muted: #a0aec0;

    /* Roles */
    --color-admin: #e1bee7;
    --color-admin-text: #6a1b9a;
    --color-user: #b3e5fc;
    --color-user-text: #01579b;

    /* Structure */
    --sidebar-width: 220px;
    --nav-height: 60px;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;

    /* Font */
    --font: 'Patrick Hand', cursive;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    font-weight: bold;
    font-size: 1rem;
    background-color: #e8f4fd;
    /* Dot pattern using radial gradients */
    background-image:
        radial-gradient(circle, #b3e5fc 1.5px, transparent 1.5px),
        radial-gradient(circle, #90caf9 1px, transparent 1px);
    background-size: 28px 28px, 14px 14px;
    background-position: 0 0, 7px 7px;
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

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

a:hover {
    text-decoration: underline;
}

/* =========================================
   TYPOGRAPHY
   ========================================= */
h1 {
    font-size: 1.8rem;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

h2 {
    font-size: 1.4rem;
    color: var(--text-primary);
}

h3 {
    font-size: 1.15rem;
    color: var(--text-primary);
}

p {
    line-height: 1.6;
    color: var(--text-secondary);
}

/* =========================================
   AUTH LAYOUT (Login / Register)
   ========================================= */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

.auth-card {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 440px;
    overflow: hidden;
}

.auth-card-header {
    background: linear-gradient(135deg, var(--color-accent) 0%, #29b6f6 100%);
    padding: 2rem 2rem 1.5rem;
    text-align: center;
}

.auth-card-header .app-title {
    font-size: 1.6rem;
    color: #fff;
    letter-spacing: -0.02em;
}

.auth-card-header .app-subtitle {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.85);
    margin-top: 0.3rem;
}

.auth-card-body {
    padding: 2rem;
}

.auth-card-body h2 {
    margin-bottom: 1.5rem;
    font-size: 1.15rem;
    color: var(--text-secondary);
    text-align: center;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* =========================================
   FORM ELEMENTS
   ========================================= */
.form-group {
    margin-bottom: 1.2rem;
}

label {
    display: block;
    margin-bottom: 0.4rem;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-secondary);
}

input,
select {
    width: 100%;
    padding: 0.7rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--color-surface-2);
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--color-accent);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(79, 195, 247, 0.12);
}

/* =========================================
   BUTTONS
   ========================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.65rem 1.2rem;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-weight: bold;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent) 0%, #29b6f6 100%);
    color: #fff;
    box-shadow: 0 4px 10px rgba(79, 195, 247, 0.35);
}

.btn-primary:hover {
    filter: brightness(1.08);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(79, 195, 247, 0.45);
    text-decoration: none;
    color: #fff;
}

.btn-primary:active {
    transform: translateY(0);
    filter: brightness(0.95);
}

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

.btn-ghost:hover {
    background: var(--color-accent-light);
    border-color: var(--color-accent);
    color: var(--color-accent-dark);
    text-decoration: none;
}

.btn-danger {
    background: #fff;
    color: #e53e3e;
    border: 2px solid #fed7d7;
}

.btn-danger:hover {
    background: #fff5f5;
    border-color: #fc8181;
}

.btn-full {
    width: 100%;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
}

/* Legacy fallback */
button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.65rem 1.2rem;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-weight: bold;
    font-size: 1rem;
    cursor: pointer;
    background: linear-gradient(135deg, var(--color-accent) 0%, #29b6f6 100%);
    color: #fff;
    box-shadow: 0 4px 10px rgba(79, 195, 247, 0.3);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    width: 100%;
}

button:hover {
    filter: brightness(1.08);
    transform: translateY(-1px);
}

button:active {
    transform: translateY(0);
    filter: brightness(0.95);
}

/* =========================================
   BADGES & CHIPS
   ========================================= */
.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 99px;
    font-size: 0.78rem;
    font-weight: bold;
    letter-spacing: 0.04em;
    white-space: nowrap;
}

.badge-admin {
    background: var(--color-admin);
    color: var(--color-admin-text);
}

.badge-user {
    background: var(--color-user);
    color: var(--color-user-text);
}

.badge-pending {
    background: var(--color-yellow);
    color: var(--color-yellow-dark);
}

.badge-in-progress {
    background: var(--color-purple);
    color: var(--color-purple-dark);
}

.badge-done {
    background: var(--color-green);
    color: var(--color-green-dark);
}

.badge-high {
    background: #fde8e8;
    color: #c53030;
}

.badge-medium {
    background: #fef3c7;
    color: #92400e;
}

.badge-low {
    background: #d1fae5;
    color: #065f46;
}

/* =========================================
   DASHBOARD LAYOUT
   ========================================= */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--color-sidebar);
    border-right: 2px solid var(--color-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    box-shadow: var(--shadow-md);
    z-index: 100;
}

.sidebar-logo {
    padding: 1.4rem 1.4rem 1rem;
    border-bottom: 2px solid var(--color-border);
}

.sidebar-logo .app-name {
    font-size: 1.1rem;
    color: var(--color-accent-dark);
    letter-spacing: -0.01em;
}

.sidebar-logo .app-tagline {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 0.1rem;
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0.7rem;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 0.9rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    font-family: var(--font);
    font-weight: bold;
    text-decoration: none;
}

.nav-item:hover {
    background: var(--color-accent-light);
    color: var(--color-accent-dark);
    text-decoration: none;
}

.nav-item.active {
    background: var(--color-accent-light);
    color: var(--color-accent-dark);
    border: 2px solid var(--color-border-strong);
}

.nav-item .icon {
    font-size: 1.1rem;
    min-width: 1.4rem;
    text-align: center;
}

.sidebar-footer {
    padding: 1rem 0.7rem;
    border-top: 2px solid var(--color-border);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.5rem 0.4rem;
    margin-bottom: 0.5rem;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent), #29b6f6);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1rem;
    flex-shrink: 0;
}

.user-details .user-name {
    font-size: 0.9rem;
    color: var(--text-primary);
}

.user-details .user-role {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Main content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.top-bar {
    height: var(--nav-height);
    background: var(--color-surface);
    border-bottom: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: var(--shadow-sm);
}

.top-bar h1 {
    font-size: 1.2rem;
}

.page-content {
    padding: 2rem;
    flex: 1;
}

/* =========================================
   CARDS
   ========================================= */
.card {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-border-strong);
    transition: all 0.2s;
}

/* Stats row */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1.2rem 1.5rem;
    box-shadow: var(--shadow-sm);
}

.stat-card .stat-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
}

.stat-card .stat-value {
    font-size: 2rem;
    color: var(--text-primary);
    line-height: 1;
}

.stat-card.accent {
    border-color: var(--color-accent);
    background: var(--color-accent-light);
}

/* Task cards */
.task-list {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.task-card {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1.2rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s;
    border-left: 4px solid var(--color-accent);
}

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

.task-card.high {
    border-left-color: #fc8181;
}

.task-card.medium {
    border-left-color: #f6c90e;
}

.task-card.low {
    border-left-color: #68d391;
}

.task-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
}

.task-card-title {
    font-size: 1rem;
    color: var(--text-primary);
}

.task-card-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.task-card-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Section header */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

/* Admin panel */
.admin-panel {
    background: #fdf4ff;
    border: 2px solid var(--color-admin);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.admin-panel-title {
    color: var(--color-admin-text);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.admin-panel p {
    color: var(--color-purple-dark);
    opacity: 0.8;
}

/* Role selector cards (Register page) */
.role-selector {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.role-option {
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

.role-option:hover {
    border-color: var(--color-accent);
    background: var(--color-accent-light);
}

.role-option.selected {
    border-color: var(--color-accent);
    background: var(--color-accent-light);
    box-shadow: 0 0 0 3px rgba(79, 195, 247, 0.15);
}

.role-option .role-icon {
    font-size: 1.5rem;
    display: block;
    margin-bottom: 0.35rem;
}

.role-option .role-name {
    font-size: 0.9rem;
    color: var(--text-primary);
}

.role-option .role-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.15rem;
}

/* Helper for hidden real select */
select#role {
    display: none;
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-muted);
}

.empty-state .empty-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Divider */
.divider {
    border: none;
    border-top: 2px solid var(--color-border);
    margin: 1.5rem 0;
}

/* =========================================
   404 PAGE
   ========================================= */
.error-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-align: center;
}

.error-card {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 3rem 2.5rem;
    max-width: 440px;
    box-shadow: var(--shadow-lg);
}

.error-code {
    font-size: 5rem;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.error-title {
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 0.8rem;
}

.error-desc {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* =========================================
   UTILITIES
   ========================================= */
.text-center {
    text-align: center;
}

.mt-1 {
    margin-top: 0.5rem;
}

.mt-2 {
    margin-top: 1rem;
}

.mt-3 {
    margin-top: 1.5rem;
}

.mb-1 {
    margin-bottom: 0.5rem;
}

.mb-2 {
    margin-bottom: 1rem;
}

.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.gap-1 {
    gap: 0.5rem;
}

.gap-2 {
    gap: 1rem;
}

.flex-wrap {
    flex-wrap: wrap;
}

/* =========================================
   RESPONSIVE
   ========================================= */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        flex-direction: row;
        overflow-x: auto;
    }

    .sidebar-logo,
    .sidebar-footer {
        display: none;
    }

    .sidebar-nav {
        flex-direction: row;
        padding: 0.5rem;
        gap: 0.3rem;
    }

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

    .page-content {
        padding: 1rem;
    }

    .auth-card {
        max-width: 100%;
    }

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

    .role-selector {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.4rem;
    }

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

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

/* =========================================
   MODALS
   ========================================= */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(45, 55, 72, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: all;
}

.modal {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(16px) scale(0.98);
    transition: transform 0.2s ease;
}

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

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.2rem 1.5rem;
    border-bottom: 2px solid var(--color-border);
}

.modal-header h3 {
    font-size: 1.1rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    color: var(--text-muted);
    width: auto;
    padding: 0.2rem 0.4rem;
    box-shadow: none;
    transition: color 0.2s;
}

.modal-close:hover {
    color: var(--text-primary);
    transform: none;
    filter: none;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.6rem;
    padding: 1rem 1.5rem;
    border-top: 2px solid var(--color-border);
}

/* Detail field */
.detail-field {
    margin-bottom: 1rem;
}

.detail-field .detail-label {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.detail-field .detail-value {
    font-size: 0.95rem;
    color: var(--text-primary);
    line-height: 1.5;
}

/* =========================================
   TOAST NOTIFICATIONS
   ========================================= */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 2000;
}

.toast {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0.7rem 1.1rem;
    box-shadow: var(--shadow-md);
    font-size: 0.9rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: toast-in 0.25s ease forwards;
    max-width: 300px;
}

.toast.success {
    border-color: var(--color-green-dark);
}

.toast.error {
    border-color: #fc8181;
}

@keyframes toast-in {
    from {
        opacity: 0;
        transform: translateX(20px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* =========================================
   SEARCH & FILTER BAR
   ========================================= */
.toolbar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.search-input {
    flex: 1;
    min-width: 200px;
    padding: 0.6rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.95rem;
    background: var(--color-surface);
    color: var(--text-primary);
    transition: border-color 0.2s;
}

.search-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(79, 195, 247, 0.12);
}

.filter-chips {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.chip {
    padding: 0.35rem 0.9rem;
    border: 2px solid var(--color-border);
    border-radius: 99px;
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: bold;
    cursor: pointer;
    background: var(--color-surface);
    color: var(--text-secondary);
    transition: all 0.18s;
}

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

.chip.active {
    background: var(--color-accent-light);
    border-color: var(--color-accent);
    color: var(--color-accent-dark);
}

/* =========================================
   INLINE ERRORS
   ========================================= */
.field-error {
    font-size: 0.82rem;
    color: #e53e3e;
    margin-top: 0.3rem;
    display: none;
}

.field-error.visible {
    display: block;
}

.alert-error {
    background: #fff5f5;
    border: 2px solid #fed7d7;
    border-radius: var(--radius-sm);
    color: #c53030;
    padding: 0.7rem 1rem;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    display: none;
}

.alert-error.visible {
    display: block;
}

/* Clickable cursor on task cards */
.task-card {
    cursor: pointer;
}

/* Completed task style */
.task-card.completed .task-card-title {
    text-decoration: line-through;
    opacity: 0.6;
}