/* --- Cài đặt chung & Font --- */
@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@300;400;500;600;700&display=swap');

:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --green-color: #22c55e;
    --green-hover: #16a34a;
    --red-color: #ef4444;
    --red-hover: #dc2626;
    --blue-color: #3b82f6;
    --blue-hover: #2563eb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --background-color: #f0f2f5;
    --card-background: #ffffff;
    --shadow-md: 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);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --border-radius-lg: 0.5rem;
    --border-radius-xl: 0.75rem;
}

body {
    font-family: 'Be Vietnam Pro', sans-serif;
    background-color: var(--background-color);
    color: var(--gray-800);
    margin: 0;
}

#app-container {
    max-width: 1280px; /* tương đương max-w-7xl */
    margin-left: auto;
    margin-right: auto;
    padding: 1rem; /* tương đương p-4 */
}

/* --- Các thành phần chung --- */
.card {
    background-color: var(--card-background);
    box-shadow: var(--shadow-md);
    border-radius: var(--border-radius-xl);
    padding: 1.5rem; /* p-6 */
    margin-bottom: 1.5rem; /* mb-6 */
}

.view {
    display: none;
    animation: fadeIn 0.5s;
}
.view.active { display: block; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.text-muted {
    color: var(--gray-500);
    margin-bottom: 0.5rem;
}

.grid-container {
    display: grid;
    gap: 1.5rem; /* gap-6 */
}

/* --- Header --- */
.header-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem; /* p-4 */
}
.header-title {
    display: flex;
    align-items: center;
    gap: 0.75rem; /* gap-3 */
}
.header-main h1 {
    font-size: 1.5rem; /* text-2xl */
    font-weight: 700; /* font-bold */
    margin: 0;
}
.logo-icon {
    width: 3rem; /* w-12 */
    height: 3rem; /* h-12 */
    background-color: var(--primary-color);
    border-radius: 9999px; /* rounded-full */
    display: flex;
    align-items: center;
    justify-content: center;
}
#auth-info {
    font-size: 0.75rem; /* text-xs */
    color: var(--gray-500);
}

/* --- Navigation --- */
.nav-main {
    padding: 0.5rem; /* p-2 */
}
.nav-main ul {
    display: flex;
    align-items: center;
    justify-content: center;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 1rem; /* space-x-4 */
}
.nav-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem; /* gap-2 */
    padding: 0.5rem 1rem; /* px-4 py-2 */
    border-radius: var(--border-radius-lg);
    font-weight: 600; /* font-semibold */
    transition: background-color 0.2s, color 0.2s;
    border: none;
    background-color: transparent;
    cursor: pointer;
    color: var(--gray-700);
}
.nav-btn:hover {
    background-color: var(--gray-100);
}
.nav-btn.active-nav-btn {
    background-color: #eef2ff;
    color: var(--primary-color);
}

/* --- Main Content --- */
.dashboard-summary {
    grid-template-columns: 1fr;
}
.card-balance {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: space-between;
}
.total-balance-amount {
    font-size: 2.25rem; /* text-4xl */
    font-weight: 700; /* font-bold */
    color: var(--primary-color);
    margin: 0;
}
.action-buttons {
    display: flex;
    gap: 0.5rem; /* gap-2 */
    margin-top: 1rem;
}
.card-chart {
    margin-bottom: 0;
}
.jars-grid {
    grid-template-columns: repeat(1, minmax(0, 1fr));
}

/* --- Buttons --- */
.btn {
    font-weight: 700; /* font-bold */
    padding: 0.75rem 1.25rem; /* py-3 px-5 */
    border-radius: var(--border-radius-lg);
    transition: background-color 0.2s;
    border: none;
    cursor: pointer;
    color: white;
}
.btn-green { background-color: var(--green-color); }
.btn-green:hover { background-color: var(--green-hover); }

.btn-red { background-color: var(--red-color); }
.btn-red:hover { background-color: var(--red-hover); }

.btn-blue { background-color: var(--blue-color); }
.btn-blue:hover { background-color: var(--blue-hover); }

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

.btn-light {
    background-color: var(--gray-200);
    color: var(--gray-800);
    font-weight: 600; /* font-semibold */
}
.btn-light:hover { background-color: var(--gray-300); }


/* --- Modal --- */
.modal {
    position: fixed;
    inset: 0;
    z-index: 50;
    display: none; /* mặc định ẩn */
    align-items: center;
    justify-content: center;
}
.modal-backdrop {
    position: fixed;
    inset: 0;
    background-color: rgba(0,0,0,0.5);
}
.modal-content {
    background-color: var(--card-background);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-2xl);
    padding: 2rem; /* p-8 */
    width: 100%;
    max-width: 28rem; /* max-w-md */
    z-index: 10;
    margin: 1rem; /* m-4 */
    position: relative;
    display: flex;
    flex-direction: column;
}
.modal-title {
    font-size: 1.5rem; /* text-2xl */
    font-weight: 700; /* font-bold */
    margin: 0 0 1.5rem 0; /* mb-6 */
}
.modal-close {
    position: absolute;
    top: 0.5rem; /* top-2 */
    right: 0.5rem; /* right-2 */
    color: var(--gray-300);
    font-size: 1.5rem; /* text-2xl */
    font-weight: 700;
    cursor: pointer;
    border: none;
    background: none;
    padding: 0.5rem;
    line-height: 1;
}
.modal-close:hover {
    color: var(--red-color);
}


/* --- Form Elements --- */
.form-group {
    margin-bottom: 1rem; /* mb-4 */
}
.form-group:last-of-type {
    margin-bottom: 1.5rem; /* mb-6 */
}
.form-group label {
    display: block;
    color: var(--gray-700);
    font-weight: 500; /* font-medium */
    margin-bottom: 0.5rem; /* mb-2 */
}
.form-input {
    width: 100%;
    padding: 0.75rem; /* p-3 */
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-lg);
    box-sizing: border-box;
}
select.form-input {
    background-color: white;
}
.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem; /* gap-4 */
}
.form-actions .btn {
    padding: 0.5rem 1.5rem; /* px-6 py-2 */
}

/* --- Footer --- */
.footer-main {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 0.5rem; /* gap-2 */
    padding: 1rem;
    margin-top: 2rem;
}
.footer-credit {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.footer-link {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
}
.footer-link:hover {
    text-decoration: underline;
}
.footer-social {
    display: flex;
    align-items: center;
    gap: 1rem; /* gap-4 */
    margin-top: 0.5rem;
}
.social-icon {
    color: var(--gray-500);
    transition: color 0.2s;
    font-size: 1.25rem; /* text-xl */
}
.social-icon:hover {
    color: var(--primary-color);
}

/* --- Responsive Design (Media Queries) --- */

/* Small devices (sm, 640px and up) */
@media (min-width: 640px) {
    .nav-main ul {
        gap: 1.5rem; /* sm:space-x-4 */
    }
    .card-balance {
        flex-direction: row; /* sm:flex-row */
        align-items: center; /* sm:items-center */
    }
    .action-buttons {
        margin-top: 0; /* sm:mt-0 */
    }
    .jars-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr)); /* sm:grid-cols-2 */
    }
    .footer-main {
        flex-direction: row; /* sm:flex-row */
        gap: 1.5rem; /* sm:gap-6 */
    }
    .footer-social {
        margin-top: 0; /* sm:mt-0 */
    }
}

/* Medium devices (md, 768px and up) */
@media (min-width: 768px) {
    .dashboard-summary {
        grid-template-columns: repeat(3, minmax(0, 1fr)); /* md:grid-cols-3 */
    }
    .card-balance {
        grid-column: span 2 / span 2; /* md:col-span-2 */
    }
    .card-chart {
        margin-bottom: 1.5rem;
    }
}

/* Large devices (lg, 1024px and up) */
@media (min-width: 1024px) {
    .jars-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr)); /* lg:grid-cols-3 */
    }
}

/* Extra-large devices (xl, 1280px and up) */
@media (min-width: 1280px) {
    .jars-grid {
        grid-template-columns: repeat(5, minmax(0, 1fr)); /* xl:grid-cols-5 */
    }
}