/* ────────────────────────────────────────────────────────────────────────────
   LitReviewAI – Design System  |  Inspired by siaparsec.com
   ──────────────────────────────────────────────────────────────────────────── */

/* ── Google Fonts ─────────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Atkinson+Hyperlegible:ital,wght@0,400;0,700;1,400;1,700&family=Montserrat:wght@300;400;500;600;700&display=swap');

/* ── CSS Custom Properties ────────────────────────────────────────────────── */
:root {
    /* Dark theme (auth, dashboard, tokens) */
    --bg-primary: #0a0a1a;
    --bg-secondary: #12122a;
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
    --border-glass: rgba(255, 255, 255, 0.12);
    --border-glass-hover: rgba(255, 255, 255, 0.22);

    /* Accessible accent colors (WCAG AA on dark bg) */
    --accent-cyan: #4FC3F7;
    --accent-green: #66BB6A;
    --accent-red: #EF5350;
    --accent-yellow: #FFD54F;
    --accent-purple: #AB47BC;

    /* Text */
    --text-primary: #FFFFFF;
    --text-secondary: #c8c8d8;
    --text-muted: #8a8aa0;

    /* Typography */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Atkinson Hyperlegible', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Spacing */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-pill: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

/* ── Light theme (review page) ────────────────────────────────────────────── */
.theme-light {
    --bg-primary: #FAFBFC;
    --bg-secondary: #FFFFFF;
    --bg-card: #FFFFFF;
    --bg-card-hover: #F3F4F6;
    --border-glass: #E5E7EB;
    --border-glass-hover: #D1D5DB;
    --text-primary: #1a1a2e;
    --text-secondary: #374151;
    --text-muted: #6B7280;
    --accent-cyan: #1565C0;
}

/* ── Reset & Base ─────────────────────────────────────────────────────────── */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ── Skip to Content (A11y) ───────────────────────────────────────────────── */
.skip-to-content {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-cyan);
    color: #000;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 700;
    z-index: 10000;
    transition: top var(--transition-fast);
    text-decoration: none;
}

.skip-to-content:focus {
    top: 10px;
}

/* ── Focus Styles (A11y) ──────────────────────────────────────────────────── */
:focus-visible {
    outline: 3px solid var(--accent-cyan);
    outline-offset: 2px;
}

/* ── Content Wrapper (sticky footer) ──────────────────────────────────────── */
.content-wrapper {
    flex: 1 0 auto;
}

/* ── Navbar ────────────────────────────────────────────────────────────────── */
.navbar-siaparsec {
    background: rgba(10, 10, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
    padding: 0.75rem 0;
}

.navbar-siaparsec .navbar-brand {
    font-family: var(--font-heading);
    font-weight: 300;
    font-size: 1.4rem;
    letter-spacing: 3px;
    color: var(--text-primary);
    text-transform: uppercase;
    text-decoration: none;
}

.navbar-siaparsec .navbar-brand:hover {
    color: var(--accent-cyan);
}

.navbar-siaparsec .nav-link {
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    transition: color var(--transition-fast);
}

.navbar-siaparsec .nav-link:hover,
.navbar-siaparsec .nav-link.active {
    color: var(--accent-cyan);
}

.nav-link .fa,
.nav-link .fas,
.nav-link .far {
    margin-right: 0.35rem;
}

/* Token Badge */
.token-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(79, 195, 247, 0.15);
    border: 1px solid rgba(79, 195, 247, 0.3);
    color: var(--accent-cyan);
    padding: 4px 14px;
    border-radius: var(--radius-pill);
    font-size: 0.875rem;
    font-weight: 700;
}

/* ── Footer ───────────────────────────────────────────────────────────────── */
.footer-siaparsec {
    background: rgba(10, 10, 26, 0.95);
    border-top: 1px solid var(--border-glass);
    padding: 1.5rem 0;
    margin-top: auto;
    flex-shrink: 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-siaparsec a {
    color: var(--accent-cyan);
    text-decoration: none;
}

.footer-siaparsec a:hover {
    text-decoration: underline;
}

/* ── Glass Card ───────────────────────────────────────────────────────────── */
.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    padding: 2rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.glass-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-glass-hover);
}

/* ── Ghost Buttons ────────────────────────────────────────────────────────── */
.btn-ghost {
    background: transparent;
    border: 1px solid var(--text-secondary);
    color: var(--text-primary);
    padding: 10px 28px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.btn-ghost:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(79, 195, 247, 0.15);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    border: none;
    color: #fff;
    padding: 10px 28px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-normal);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(79, 195, 247, 0.3);
    color: #fff;
}

/* ── Headings ─────────────────────────────────────────────────────────────── */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.section-title {
    font-family: var(--font-heading);
    font-weight: 300;
    font-size: 2rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 2rem;
}

/* ── Auth Pages ───────────────────────────────────────────────────────────── */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0a0a1a 0%, #1a1a2e 50%, #0d0d25 100%);
    position: relative;
    overflow: hidden;
}

.auth-card {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    width: 100%;
    max-width: 440px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    position: relative;
    z-index: 2;
}

.auth-card .form-label {
    color: var(--text-secondary);
    font-weight: 700;
    font-size: 0.875rem;
    margin-bottom: 0.4rem;
}

.auth-card .form-control {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.auth-card .form-control::placeholder {
    color: var(--text-muted);
}

.auth-card .form-control:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(79, 195, 247, 0.15);
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

/* ── Particles Background ─────────────────────────────────────────────────── */
.particles-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: rgba(79, 195, 247, 0.4);
    border-radius: 50%;
    animation: float-particle linear infinite;
}

@keyframes float-particle {
    0% {
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }

    10% {
        opacity: 1;
    }

    90% {
        opacity: 1;
    }

    100% {
        transform: translateY(-10vh) scale(1);
        opacity: 0;
    }
}

/* ── Dashboard ────────────────────────────────────────────────────────────── */
.dashboard-header {
    padding: 2rem 0;
}

.dashboard-header h1 {
    font-weight: 300;
    letter-spacing: 1px;
}

.review-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: all var(--transition-normal);
    text-decoration: none;
    display: block;
    color: inherit;
}

.review-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-cyan);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(79, 195, 247, 0.1);
    color: inherit;
}

.review-card .review-title {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.review-card .review-meta {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.review-card .review-stats {
    display: flex;
    gap: 1rem;
    margin-top: 0.75rem;
}

.review-stat {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.875rem;
    font-weight: 700;
}

.review-stat.included {
    color: var(--accent-green);
}

.review-stat.excluded {
    color: var(--accent-red);
}

.review-stat.total {
    color: var(--accent-cyan);
}

.status-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-badge.completed {
    background: rgba(102, 187, 106, 0.15);
    color: var(--accent-green);
}

.status-badge.pending {
    background: rgba(255, 213, 79, 0.15);
    color: var(--accent-yellow);
}

.status-badge.failed {
    background: rgba(239, 83, 80, 0.15);
    color: var(--accent-red);
}

/* ── Pricing Cards ────────────────────────────────────────────────────────── */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    padding: 1rem 0;
}

.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    padding: 2rem 1.5rem;
    text-align: center;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.pricing-card:hover {
    border-color: var(--accent-cyan);
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(79, 195, 247, 0.12);
}

.pricing-card.popular {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 30px rgba(79, 195, 247, 0.1);
}

.pricing-card.popular::before {
    content: '★ Mais Popular';
    position: absolute;
    top: 12px;
    right: -30px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    color: #fff;
    padding: 4px 40px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    transform: rotate(35deg);
}

.pricing-card .pkg-label {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.75rem;
}

.pricing-card .pkg-tokens {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 2.5rem;
    color: var(--text-primary);
    line-height: 1;
}

.pricing-card .pkg-tokens small {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-muted);
}

.pricing-card .pkg-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0.75rem 0;
}

.pricing-card .pkg-price small {
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--text-muted);
    display: block;
}

.pricing-card .pkg-discount {
    display: inline-block;
    padding: 3px 12px;
    border-radius: var(--radius-pill);
    background: rgba(102, 187, 106, 0.15);
    color: var(--accent-green);
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

/* ── Flash Messages ───────────────────────────────────────────────────────── */
.flash-messages {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 9999;
    max-width: 400px;
}

.flash-messages .alert {
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
}

/* ── Empty State ──────────────────────────────────────────────────────────── */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state p {
    font-size: 1.1rem;
}

/* ── Responsive ───────────────────────────────────────────────────────────── */

/* ── Mobile (≤ 768px) ──────────────────────────────────────────────────── */
@media (max-width: 768px) {

    /* Navbar */
    .navbar-siaparsec .navbar-brand {
        font-size: 1.1rem;
        letter-spacing: 2px;
    }

    .navbar-siaparsec .navbar-collapse {
        background: rgba(10, 10, 26, 0.97);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-top: 1px solid var(--border-glass);
        margin-top: 0.5rem;
        padding: 1rem 0.5rem;
        border-radius: 0 0 var(--radius-md) var(--radius-md);
    }

    .navbar-siaparsec .navbar-collapse .nav-link {
        padding: 0.75rem 1rem;
        font-size: 1rem;
        border-radius: var(--radius-sm);
    }

    .navbar-siaparsec .navbar-collapse .nav-link:hover {
        background: rgba(255, 255, 255, 0.05);
    }

    .navbar-siaparsec .navbar-collapse .token-badge {
        margin: 0.5rem 1rem;
    }

    /* Auth pages */
    .auth-card {
        margin: 1rem;
        padding: 1.5rem;
    }

    /* Particles – less prominent on mobile */
    .particles-bg {
        position: absolute;
        opacity: 0.5;
    }

    /* Dashboard */
    .dashboard-header h1 {
        font-size: 1.4rem;
    }

    .review-card {
        padding: 1.2rem;
    }

    .review-stats {
        flex-wrap: wrap;
    }

    /* Pricing */
    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .pricing-card .pkg-tokens {
        font-size: 2rem;
    }

    /* Section title */
    .section-title {
        font-size: 1.5rem;
        letter-spacing: 1px;
    }

    /* Glass card */
    .glass-card {
        padding: 1.5rem;
    }

    /* Flash messages */
    .flash-messages {
        left: 10px;
        right: 10px;
        max-width: none;
    }

    /* Footer */
    .footer-siaparsec {
        padding: 1rem 0;
        font-size: 0.8rem;
    }

    /* UserWay widget – move to bottom-left on mobile to avoid navbar overlap */
    .uwy,
    [data-userway-widget],
    .userway_buttons_wrapper,
    #userwayAccessibilityIcon {
        top: auto !important;
        bottom: 12px !important;
        left: 8px !important;
        right: auto !important;
        transform: scale(1.15) !important;
        transform-origin: bottom left !important;
    }

    /* UserWay iframe fallback */
    body>iframe[title*="ccessib"] {
        top: auto !important;
        bottom: 12px !important;
        left: 8px !important;
        right: auto !important;
        transform: scale(1.15) !important;
        transform-origin: bottom left !important;
    }
}

/* ── Small mobile (≤ 480px) ────────────────────────────────────────────── */
@media (max-width: 480px) {
    body {
        font-size: 15px;
    }

    .auth-card {
        margin: 0.5rem;
        padding: 1.25rem;
        border-radius: var(--radius-md);
    }

    .auth-card h1 {
        font-size: 1.4rem !important;
        letter-spacing: 2px !important;
    }

    .navbar-siaparsec {
        padding: 0.5rem 0;
    }

    .pricing-card {
        padding: 1.5rem 1rem;
    }
}

/* ── Payment Success ──────────────────────────────────────────────────────── */
.success-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(102, 187, 106, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.success-icon i {
    font-size: 2.5rem;
    color: var(--accent-green);
}