/* Modern Dark Theme with Glassmorphism */
:root {
    --bg-color: #0f172a;
    --text-color: #e2e8f0;
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --secondary-color: #10b981;
    --surface-color: rgba(30, 41, 59, 0.7);
    --border-color: rgba(148, 163, 184, 0.1);
    --error-color: #ef4444;
    --glass-bg: rgba(30, 41, 59, 0.6);
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    background-image:
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(16, 185, 129, 0.15) 0px, transparent 50%);
    background-attachment: fixed;
    min-height: 100vh;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    color: #f8fafc;
    margin-bottom: 1rem;
    font-weight: 600;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    text-decoration: underline;
}

/* Layout */
.container {
    margin: 0 auto;
    padding: 2rem;
}

/* Cards / Glassmorphism */
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

/* Forms */
form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 500px;
}

label {
    font-weight: 500;
    color: #cbd5e1;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
select,
textarea {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.75rem;
    color: var(--text-color);
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

/* Buttons */
button,
input[type="submit"],
.btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    display: inline-block;
    text-align: center;
    text-decoration: none;
}

button:hover,
input[type="submit"]:hover,
.btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    text-decoration: none;
}

button:active,
input[type="submit"]:active,
.btn:active {
    transform: translateY(0);
}

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

.btn-danger:hover {
    background-color: #dc2626;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
    background: rgba(15, 23, 42, 0.3);
    border-radius: 0.5rem;
    overflow: hidden;
}

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

th {
    background-color: rgba(30, 41, 59, 0.8);
    font-weight: 600;
    color: #f8fafc;
}

tr:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
}

.alert-error {
    background-color: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.2);
    color: #6ee7b7;
}

/* Login Page Specific */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.mt-4 {
    margin-top: 1rem;
}

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

.flex {
    display: flex;
}

.gap-2 {
    gap: 0.5rem;
}

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

    .flex {
        flex-wrap: wrap;
    }
    
    /* Stack buttons on very small screens if needed, or keep wrapped */
    .flex > .btn {
        flex: 1 1 auto; /* Allow buttons to grow and fill width */
        text-align: center;
    }

    form {
        max-width: 100%;
    }

    /* Table Wrapper class to be added in PHP */
    .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    /* Ensure table doesn't force width */
    table {
        min-width: 600px; /* Force scroll if content is squished */
    }
}