/* app.css */
:root {
    --color-primary: #1e3a8a; /* Indigo 900 */
    --color-primary-light: #3b82f6; /* Blue 500 */
    --color-secondary: #fdf2f8; /* Pink 50 */
    --color-accent: #f43f5e; /* Rose 500 */
    --color-background: #f8fafc; /* Slate 50 */
    --color-surface: #ffffff;
    --color-text: #1e293b; /* Slate 800 */
    --color-text-muted: #64748b; /* Slate 500 */
    --color-border: #e2e8f0; /* Slate 200 */
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--color-background);
    color: var(--color-text);
    line-height: 1.5;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.app-header {
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-decoration: none;
}

/* Cards */
.card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 2rem;
    border: 1px solid var(--color-border);
}

/* Auth Container */
.auth-container {
    max-width: 450px;
    margin: 4rem auto;
    width: 100%;
    padding: 0 1rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all 0.2s;
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Buttons */
.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    text-decoration: none;
    width: 100%;
    font-family: inherit;
}

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

.btn-primary:hover {
    background-color: #1e40af; /* darker indigo */
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

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

.btn-text {
    background-color: transparent;
    color: var(--color-text-muted);
}

.btn-text:hover {
    color: var(--color-primary);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    width: auto;
}

/* Utilities */
.text-center { text-align: center; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.hidden { display: none !important; }
.w-full { width: 100%; }
.flex { display: flex; }
.justify-between { justify-content: space-between; }
.items-center { align-items: center; }
.grid { display: grid; }
.gap-6 { gap: 1.5rem; }

@media (min-width: 768px) {
    .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
    .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.alert-error {
    background-color: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-success {
    background-color: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.alert-info {
    background-color: #eff6ff;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

/* Resource Cards (Dashboard) */
.resource-card {
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s, box-shadow 0.2s;
}

.resource-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.resource-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    background: var(--color-secondary);
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.resource-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.resource-desc {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    flex-grow: 1;
    margin-bottom: 1.5rem;
}

.resource-meta {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-weight: 600;
    margin-bottom: 1rem;
}