@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
    --bg-gradient-1: #0f172a;
    --bg-gradient-2: #1e1b4b;
    --card-bg: rgba(30, 41, 59, 0.7);
    --card-border: rgba(255, 255, 255, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-blue: #6366f1;
    --accent-cyan: #06b6d4;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
    --accent-hover: linear-gradient(135deg, #4f46e5 0%, #0891b2 100%);
    --danger: #ef4444;
    --success: #10b981;
    --shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
    --radius: 16px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Outfit', sans-serif;
}

body {
    min-height: 100vh;
    background: radial-gradient(circle at top left, var(--bg-gradient-2), var(--bg-gradient-1));
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.5rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
}

.logo-badge {
    background: var(--accent-gradient);
    color: #fff;
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-weight: 600;
    -webkit-text-fill-color: initial;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    margin-left: 1.5rem;
    transition: color 0.2s;
}

nav a:hover, nav a.active {
    color: var(--text-primary);
}

nav a.btn-portal {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    border: 1px solid var(--card-border);
}

nav a.btn-portal:hover {
    background: rgba(255, 255, 255, 0.2);
}

main {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2.5rem 1rem;
}

.query-card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 2.5rem;
    width: 100%;
    max-width: 650px;
    box-shadow: var(--shadow);
    animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.card-header {
    text-align: center;
    margin-bottom: 2rem;
}

.card-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.card-header p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group.full-width {
    grid-column: span 2;
}

label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

input, select {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    padding: 0.85rem 1rem;
    border-radius: 10px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus, select:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2);
}

select option {
    background: #0f172a;
    color: #fff;
}

.btn-submit {
    grid-column: span 2;
    background: var(--accent-gradient);
    color: #fff;
    font-weight: 600;
    font-size: 1.1rem;
    padding: 1rem;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    margin-top: 0.5rem;
    transition: transform 0.1s, opacity 0.2s;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.btn-submit:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-submit:active {
    transform: translateY(0);
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 0.8s linear infinite;
    display: none;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.alert {
    padding: 1rem;
    border-radius: 10px;
    margin-top: 1.5rem;
    font-size: 0.95rem;
    display: none;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.4);
    color: #fca5a5;
}

.results-section {
    margin-top: 2rem;
    display: none;
}

.result-card {
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--card-border);
}

.doc-title {
    font-weight: 700;
    font-size: 1.2rem;
    color: #34d399;
}

.doc-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

.doc-info-grid strong {
    color: var(--text-primary);
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--accent-gradient);
    color: #fff;
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: opacity 0.2s;
    cursor: pointer;
    border: none;
}

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

.btn-download-secondary {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--card-border);
    color: #fff;
}

.btn-download-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

.references-box {
    margin-top: 1.5rem;
    padding: 1.25rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 10px;
}

.references-title {
    font-weight: 600;
    font-size: 1rem;
    color: #a5b4fc;
    margin-bottom: 0.75rem;
}

.pdf-viewer-container {
    margin-top: 1.5rem;
    border-radius: 10px;
    overflow: hidden;
    height: 500px;
    border: 1px solid var(--card-border);
}

.pdf-viewer-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

footer {
    text-align: center;
    padding: 1.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    border-top: 1px solid var(--card-border);
    background: rgba(15, 23, 42, 0.9);
}

@media (max-width: 640px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
    .form-group.full-width {
        grid-column: span 1;
    }
    .btn-submit {
        grid-column: span 1;
    }
    .query-card {
        padding: 1.5rem;
    }
}