@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --secondary-color: #ec4899;
    --background: #f8fafc;
    --surface: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius: 0.75rem;
}

[data-theme="dark"] {
    --background: #0f172a;
    --surface: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }

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

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

    .nav-link {
        margin-left: 0.75rem;
        margin-right: 0.75rem;
    }
}

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

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    margin: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 0 0 1rem 0;
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: 2.5rem;
    letter-spacing: -0.025em;
}

h2 {
    font-size: 2rem;
    letter-spacing: -0.025em;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 8px -1px rgba(99, 102, 241, 0.5);
}

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

.btn-secondary:hover {
    background-color: #f1f5f9;
    border-color: #cbd5e1;
}

.btn-danger {
    background-color: #fee2e2;
    color: var(--danger);
}

.btn-danger:hover {
    background-color: #fecaca;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.875rem;
}

/* Cards */
.card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.5rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

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

/* Completed Task Style */
.task-completed {
    opacity: 0.6;
    background-color: #f1f5f9;
}

.task-completed h3 {
    text-decoration: line-through;
    color: var(--text-secondary);
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    box-sizing: border-box;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Grid System */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

/* Badges */
.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: inline-block;
}

.badge-priority-1 {
    background: #fee2e2;
    color: #ef4444;
}

/* High */
.badge-priority-2 {
    background: #fef3c7;
    color: #d97706;
}

/* Medium */
.badge-priority-3 {
    background: #dcfce7;
    color: #16a34a;
}

/* Low */

.badge-complete {
    background: #dcfce7;
    color: #16a34a;
}

.badge-pending {
    background: #f1f5f9;
    color: #64748b;
}

/* Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 1rem 0;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    margin-left: 1.5rem;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Utility */
.d-flex {
    display: flex;
}

.align-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-2 {
    gap: 0.5rem;
}

.mb-4 {
    margin-bottom: 1rem;
}

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

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

.animate-fade-in {
    animation: fadeIn 0.4s ease-out forwards;
}

/* Custom Checkbox */
.custom-checkbox {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: 500;
    user-select: none;
}

.custom-checkbox input {
    margin-right: 0.75rem;
    width: 1.25rem;
    height: 1.25rem;
    accent-color: var(--primary-color);
    cursor: pointer;
}