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

:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.1);
    --input-bg: rgba(15, 23, 42, 0.6);
    --error-color: #ef4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-color);
    background-image:
        radial-gradient(at 0% 0%, rgba(79, 70, 229, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.1) 0px, transparent 50%);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

/* Glassmorphism Card */
.login-container {
    width: 100%;
    max-width: 420px;
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 3rem 2.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.6s ease-out forwards;
    transform: translateY(20px);
    opacity: 0;
}

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

.login-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.logo-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-color), #818cf8);
    border-radius: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    box-shadow: 0 10px 25px -5px rgba(79, 70, 229, 0.5);
}

.logo-icon svg {
    width: 32px;
    height: 32px;
    color: white;
}

.login-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.025em;
}

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

/* Form Groups */
.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
}

.input-icon-wrapper {
    position: relative;
}

.input-icon-wrapper svg {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-muted);
    transition: color 0.3s ease;
}

.form-control {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem 1rem 1rem 3rem;
    color: var(--text-main);
    font-size: 1rem;
    transition: all 0.3s ease;
    outline: none;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}

.form-control:focus+svg,
.form-control:not(:placeholder-shown)+svg {
    color: var(--primary-color);
}

/* Custom Checkbox */
.remember-me {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
    cursor: pointer;
}

.remember-me input {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-right: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.checkmark svg {
    width: 12px;
    height: 12px;
    color: white;
    opacity: 0;
    transform: scale(0.5);
    transition: all 0.2s;
}

.remember-me input:checked~.checkmark {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.remember-me input:checked~.checkmark svg {
    opacity: 1;
    transform: scale(1);
}

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

/* Button */
.btn-submit {
    width: 100%;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 12px;
    padding: 1rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-submit:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -10px rgba(79, 70, 229, 0.5);
}

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

.btn-submit svg {
    width: 20px;
    height: 20px;
    transition: transform 0.3s;
}

.btn-submit:hover svg {
    transform: translateX(4px);
}

/* Alert Messages */
.alert {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--error-color);
    padding: 1rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* Responsive */
@media (max-width: 480px) {
    .login-container {
        padding: 2.5rem 1.5rem;
        border-radius: 20px;
    }
}

/* ==========================================================================
   DASHBOARD LAYOUT (Dashboard, Customers, Invoices)
   ========================================================================== */

.dashboard-body {
    background-color: var(--bg-color);
    background-image: none;
    /* remove login bg */
    display: block;
    align-items: stretch;
    justify-content: flex-start;
    padding: 0;
}

.app-layout {
    display: flex;
    min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
    width: 280px;
    background: var(--card-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
    z-index: 50;
}

.sidebar-header {
    height: 70px;
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    border-bottom: 1px solid var(--border-color);
    gap: 1rem;
}

.sidebar-header .logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), #818cf8);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-bottom: 0;
    box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
}

.logo-text {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-main);
    letter-spacing: -0.5px;
}

.sidebar-nav {
    padding: 1.5rem 1rem;
    flex: 1;
    overflow-y: auto;
}

.nav-section {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 1.5rem 0 0.5rem 0.75rem;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: var(--text-main);
    text-decoration: none;
    border-radius: 10px;
    margin-bottom: 0.25rem;
    transition: all 0.2s ease;
    font-weight: 500;
}

.nav-item i {
    width: 20px;
    height: 20px;
    margin-right: 1rem;
    color: var(--text-muted);
    transition: color 0.2s ease;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.nav-item:hover i {
    color: var(--text-main);
}

.nav-item.active {
    background: rgba(79, 70, 229, 0.15);
    color: var(--primary-color);
}

.nav-item.active i {
    color: var(--primary-color);
}

/* --- Main Content --- */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    /* Important for flex-child truncation */
}

/* --- Top Navbar --- */
.top-navbar {
    height: 70px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
}

.page-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.user-greeting {
    font-size: 0.95rem;
    color: var(--text-muted);
    font-weight: 500;
}

.btn-logout {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
    border: 1px solid rgba(239, 68, 68, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.btn-logout:hover {
    background: var(--error-color);
    color: white;
}

.btn-logout i {
    width: 16px;
    height: 16px;
}

/* --- Content Container --- */
.content-container {
    padding: 2.5rem;
    flex: 1;
    overflow-y: auto;
}

.dashboard-header {
    margin-bottom: 2rem;
}

.dashboard-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.dashboard-header p {
    color: var(--text-muted);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.2);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(79, 70, 229, 0.1);
    color: var(--primary-color);
    flex-shrink: 0;
}

.stat-icon.green {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.stat-icon.orange {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
}

.stat-icon.blue {
    background: rgba(56, 189, 248, 0.1);
    color: #38bdf8;
}

.stat-icon i {
    width: 24px;
    height: 24px;
}

.stat-info h3 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.stat-info .value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
}

.content-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
}

.content-card h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.content-card p {
    color: var(--text-muted);
    line-height: 1.6;
}

/* Form inputs & General Buttons for internal pages */
.table-responsive {
    overflow-x: auto;
}

table.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

table.data-table th,
table.data-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

table.data-table th {
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

table.data-table td {
    color: var(--text-main);
    font-size: 0.95rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    text-decoration: none;
}

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

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

/* Mobile Reponsive Dashboard */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .menu-toggle {
        display: block;
    }

    .content-container {
        padding: 1.5rem;
    }

    .top-navbar {
        padding: 0 1.5rem;
    }
}