:root {
    --bg-color: #f4f7f9;
    --card-bg: #ffffff;
    --primary-accent: #2563eb;
    --text-main: #1e293b;
    --border-radius: 12px;
}

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

body {
    font-family: 'Inter', system-ui, sans-serif;
    background-color: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: var(--text-main);
}

.login-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    display: grid;
    gap: 1.5rem;
}

header h1 { 
    font-size: 1.5rem; 
    margin-bottom: 0.5rem; 
}

header p { 
    font-size: 0.875rem; 
    color: #64748b; 
}

.input-group { 
    display: grid; 
    gap: 0.5rem; 
}

label { 
    font-size: 0.875rem; 
    font-weight: 600; 
}

input {
    padding: 0.75rem;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

input:focus {
    outline: none;
    border-color: var(--primary-accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.btn-primary {
    background: var(--primary-accent);
    color: white;
    padding: 0.75rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn-primary:hover { 
    opacity: 0.9; 
}

.btn-secondary {
    display: block;
    text-align: center;
    margin-top: 1rem;
    background: transparent;
    color: var(--primary-accent);
    padding: 0.75rem;
    border: 1px solid var(--primary-accent);
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

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


footer p { 
    font-size: 0.75rem; 
    text-align: center; 
    color: #94a3b8; 
}

/* CSS For Registeration page */
.register-card header h1 {
    color: var(--primary-accent);
}

.login-form .btn-primary {
    margin-top: 0.5rem;
    width: 100%;
}

.login-form .btn-secondary {
    width: 100%;
}

/* CSS For Dashboard */
.dashboard-container {
    display: flex;
    min-height: 100vh;
    background: var(--bg-color);
}

/* Sidebar */
.sidebar {
    background: var(--primary-accent);
    color: white;
    width: 220px;
    padding: 2rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.sidebar h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.sidebar nav {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.sidebar nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem;
    border-radius: 6px;
    transition: background 0.2s;
}

.sidebar nav a:hover,
.sidebar nav a.active {
    background: rgba(255, 255, 255, 0.2);
}

.sidebar nav a.logout {
    margin-top: auto;
    color: #fca5a5;
}

/* Main content */
.main-content {
    flex: 1;
    padding: 2rem;
    display: grid;
    gap: 2rem;
}

.dashboard-header h1 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.dashboard-header p {
    color: #64748b;
    font-size: 0.875rem;
}

/* Cards */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
}

.card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.card h3 {
    margin-bottom: 0.75rem;
    font-size: 1.125rem;
}

/* CSS Style for Info.php */
.info-container {
    max-width: 600px;
    margin: 50px auto;
    text-align: center;
}

.alert {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    font-weight: 500;
}

.alert.success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #10b981;
}

.alert.error {
    background-color: #fee2e2;
    color: #b91c1c;
    border: 1px solid #f87171;
}

.alert.info {
    background-color: #e0f2fe;
    color: #0369a1;
    border: 1px solid #38bdf8;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: #0369a1;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
}

.btn:hover {
    background-color: #065f46;
}