/* Base styles shared across all pages */
:root {
    /* Color palette */
    --bg-dark: #121212;
    --bg-card: #1e1e1e;
    --bg-input: #2c2c2c;
    --color-primary: #0097a7;
    --color-primary-light: #00bcd4;
    --color-primary-dark: #00838f;
    --text-light: #ffffff;
    --text-muted: #a1a1a1;
    --border-color: #444;
}

/* Reset and base styling */
body {
    background: var(--bg-dark);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-muted);
    margin: 0;
    min-height: 100vh;
}

/* Navigation bar */
.navbar {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.navbar-brand {
    font-weight: 600;
    color: var(--color-primary-light);
}

/* Cards */
.card {
    background-color: var(--bg-card);
    border: none;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    border-radius: 12px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

/* Buttons */
.btn-primary {
    background: linear-gradient(to right, var(--color-primary), var(--color-primary-light));
    border: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: linear-gradient(to right, var(--color-primary-dark), var(--color-primary));
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 151, 167, 0.4);
}

/* Alerts */
.alert {
    border-radius: 8px;
    padding: 1rem;
}

/* Placeholder state */
.placeholder-text {
    color: #888;
    font-style: italic;
}

/* Responsive containers */
@media (max-width: 768px) {
    .container {
        padding-left: 20px;
        padding-right: 20px;
    }
}