/* assets/css/style.css */
:root {
    --primary: #0A66C2;
    --accent: #00C896;
    --bg-dark: #0D1117;
    --bg-light: #F8FAFC;
    --card-dark: rgba(22, 27, 34, 0.8);
    --card-light: rgba(255, 255, 255, 0.9);
    --text-dark: #C9D1D9;
    --text-light: #1F2328;
    --border-dark: #30363D;
    --border-light: #D0D7DE;
    --sidebar-width: 260px;
    --top-nav-height: 64px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif, 'SolaimanLipi';
    font-size: 14px;
    line-height: 1.5;
    transition: background-color 0.3s, color 0.3s;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
}

/* Dark Mode Styles */
body.dark-mode {
    background-color: var(--bg-dark);
    color: var(--text-dark);
}

body.dark-mode .sidebar {
    background-color: #161B22;
    border-right: 1px solid var(--border-dark);
}

body.dark-mode .top-nav {
    background-color: rgba(13, 17, 23, 0.8);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-dark);
}

body.dark-mode .card {
    background-color: var(--card-dark);
    border: 1px solid var(--border-dark);
}

/* Light Mode Styles */
body.light-mode {
    background-color: var(--bg-light);
    color: var(--text-light);
}

body.light-mode .sidebar {
    background-color: #FFFFFF;
    border-right: 1px solid var(--border-light);
}

body.light-mode .top-nav {
    background-color: rgba(248, 250, 252, 0.8);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-light);
}

body.light-mode .card {
    background-color: var(--card-light);
    border: 1px solid var(--border-light);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* App Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    position: fixed;
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.sidebar-nav {
    flex: 1;
    padding: 10px 0;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: inherit;
    text-decoration: none;
    transition: background 0.2s;
}

.sidebar-nav a:hover {
    background-color: rgba(10, 102, 194, 0.1);
    color: var(--primary);
}

.sidebar-footer {
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid rgba(128, 128, 128, 0.1);
}

.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.top-nav {
    height: var(--top-nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    position: sticky;
    top: 0;
    z-index: 90;
}

.content-body {
    padding: 30px;
}

/* UI Components */
.btn {
    padding: 10px 20px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: filter 0.2s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary { background-color: var(--primary); color: white; }
.btn-accent { background-color: var(--accent); color: white; }
.btn-outline { border: 1px solid currentColor; background: transparent; }

.card {
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
}

.grid {
    display: grid;
    gap: 24px;
}

.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }

.alert {
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
}

.alert-success { background: rgba(0, 200, 150, 0.1); border: 1px solid var(--accent); color: var(--accent); }
.alert-error { background: rgba(255, 0, 0, 0.1); border: 1px solid #ff0000; color: #ff0000; }

.credits-badge {
    background: rgba(10, 102, 194, 0.2);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 20px;
    font-weight: 600;
    margin-right: 15px;
}

/* Forms */
.form-group { margin-bottom: 15px; }
.form-group label { display: block; margin-bottom: 5px; font-weight: 500; }
.form-control {
    width: 100%;
    padding: 10px;
    border-radius: 6px;
    border: 1px solid var(--border-dark);
    background: transparent;
    color: inherit;
}

/* Tables */
table { width: 100%; border-collapse: collapse; margin-top: 20px; }
th, td { padding: 12px; text-align: left; border-bottom: 1px solid var(--border-dark); }
th { font-weight: 600; color: var(--primary); }

/* Responsive */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.active { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .grid-cols-3, .grid-cols-2 { grid-template-columns: 1fr; }
    .mobile-only { display: block; }
}

@media (min-width: 769px) {
    .mobile-only { display: none; }
}