/* FlutterRoadmap Styles - extracted from index.html */
:root {
    --bg: #050816;
    --bg-alt: #0b1020;
    --card-bg: #111827;
    --border: #1f2937;
    --accent: #38bdf8;
    --accent-soft: rgba(56, 189, 248, 0.15);
    --text: #e5e7eb;
    --text-muted: #9ca3af;
    --danger: #f97373;
    --success: #4ade80;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-soft: 0 20px 40px rgba(0, 0, 0, 0.45);
}

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

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
        "Segoe UI", sans-serif;
    background: radial-gradient(circle at top, #0f172a 0, #020617 55%);
    color: var(--text);
    min-height: 100vh;
    padding: 24px;
}

.page {
    max-width: 1200px;
    margin: 0 auto;
}

header {
    display: flex;
    gap: 16px;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.title-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 260px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border-radius: 999px;
    padding: 4px 12px;
    font-size: 12px;
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid rgba(148, 163, 184, 0.3);
    color: var(--text-muted);
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: var(--accent);
    box-shadow: 0 0 12px rgba(56, 189, 248, 0.9);
}

h1 {
    font-size: clamp(26px, 3vw, 32px);
    letter-spacing: 0.02em;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

h1 span.logo-dot {
    width: 22px;
    height: 22px;
    border-radius: 999px;
    background: conic-gradient(from 210deg,
            #06b6d4,
            #38bdf8,
            #a855f7,
            #f97316,
            #06b6d4);
    box-shadow: 0 0 20px rgba(56, 189, 248, 0.9);
}

h1 span.flutter {
    font-weight: 700;
    color: #38bdf8;
}

.subtitle {
    font-size: 14px;
    color: var(--text-muted);
    max-width: 520px;
}

.controls {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: flex-end;
    font-size: 13px;
    min-width: 260px;
}

.controls-top {
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: flex-end;
}

.career-group,
.filter-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.pill-btn,
.career-btn {
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.5);
    padding: 6px 12px;
    background: rgba(15, 23, 42, 0.8);
    color: var(--text-muted);
    cursor: pointer;
    font-size: 12px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
}

.pill-btn span.indicator,
.career-btn span.indicator {
    width: 8px;
    height: 8px;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.5);
    background: transparent;
}

.pill-btn.active,
.career-btn.active {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(15, 23, 42, 0.95);
    box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.2);
}

.pill-btn.active span.indicator,
.career-btn.active span.indicator {
    background: var(--accent);
    border-color: transparent;
    box-shadow: 0 0 10px rgba(56, 189, 248, 0.8);
}

.legend {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    color: var(--text-muted);
}

.legend-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 999px;
}

.legend-dot.beginner {
    background: #22c55e;
}

.legend-dot.intermediate {
    background: #eab308;
}

.legend-dot.advanced {
    background: #f97316;
}

/* Roadmap container */
.roadmap-wrapper {
    margin-top: 8px;
    background: radial-gradient(circle at top, #0b1120 0, #020617 60%);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(30, 64, 175, 0.6);
    padding: 20px;
    box-shadow: var(--shadow-soft);
    position: relative;
    overflow: hidden;
}

.roadmap-wrapper::before {
    content: "";
    position: absolute;
    inset: -120px;
    background:
        radial-gradient(circle at 0 0, rgba(56, 189, 248, 0.13), transparent 55%),
        radial-gradient(circle at 100% 0, rgba(52, 211, 153, 0.12), transparent 55%);
    opacity: 0.7;
    pointer-events: none;
}

.roadmap-grid {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    z-index: 1;
}

@media (max-width: 1024px) {
    .roadmap-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    header {
        flex-direction: column;
        align-items: flex-start;
    }

    .controls {
        align-items: flex-start;
    }

    .controls-top {
        align-items: flex-start;
    }
}

@media (max-width: 640px) {
    body {
        padding: 16px;
    }

    .roadmap-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .roadmap-wrapper {
        padding: 16px;
    }
}

.column {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.column-header {
    padding: 10px 12px;
    border-radius: 999px;
    background: linear-gradient(135deg,
            rgba(15, 118, 110, 0.85),
            rgba(37, 99, 235, 0.8));
    font-size: 13px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    color: #e5f4ff;
    flex-wrap: wrap;
}

.column-header span.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.85);
    font-size: 11px;
}

.column-header span.level {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid rgba(191, 219, 254, 0.4);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.card {
    border-radius: var(--radius-lg);
    background: linear-gradient(145deg,
            rgba(15, 23, 42, 0.98),
            rgba(15, 23, 42, 0.96));
    border: 1px solid var(--border);
    padding: 10px 12px;
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.55);
    position: relative;
    overflow: hidden;
    transition: transform 0.18s ease, box-shadow 0.18s ease,
        border-color 0.18s ease, background 0.18s ease;
    cursor: default;
}

.card::before {
    content: "";
    position: absolute;
    inset: -40%;
    background:
        radial-gradient(circle at 0 0, rgba(56, 189, 248, 0.16), transparent 60%),
        radial-gradient(circle at 100% 100%, rgba(37, 99, 235, 0.08), transparent 55%);
    opacity: 0;
    transition: opacity 0.2s ease;
    pointer-events: none;
}

.card:hover {
    transform: translateY(-2px);
    border-color: rgba(56, 189, 248, 0.7);
    box-shadow: 0 22px 40px rgba(15, 23, 42, 0.95);
    background: linear-gradient(145deg,
            rgba(15, 23, 42, 1),
            rgba(15, 23, 42, 0.98));
}

.card:hover::before {
    opacity: 1;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
    flex-wrap: wrap;
}

.card-title {
    font-size: 13px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.card-title .chip {
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 999px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border: 1px solid rgba(148, 163, 184, 0.5);
    color: var(--text-muted);
}

.card-level-badge {
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 999px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border: 1px solid rgba(148, 163, 184, 0.4);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--text-muted);
}

.card-level-dot {
    width: 8px;
    height: 8px;
    border-radius: 999px;
}

.card-level-badge[data-level="beginner"] .card-level-dot {
    background: #22c55e;
}

.card-level-badge[data-level="intermediate"] .card-level-dot {
    background: #eab308;
}

.card-level-badge[data-level="advanced"] .card-level-dot {
    background: #f97316;
}

.card-body {
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 6px;
    line-height: 1.4;
}

.card-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 3px;
    font-size: 11px;
}

.card-list li {
    display: flex;
    gap: 6px;
    align-items: flex-start;
    color: #cbd5f5;
}

.card-list li span.bullet {
    margin-top: 3px;
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.4);
    flex-shrink: 0;
}

.card-list li.passed span.bullet {
    background: var(--accent);
    box-shadow: 0 0 10px rgba(56, 189, 248, 0.9);
}

.card-footer {
    margin-top: 6px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 10px;
    color: var(--text-muted);
    opacity: 0.9;
    gap: 6px;
    flex-wrap: wrap;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.tag {
    border-radius: 999px;
    border: 1px dashed rgba(148, 163, 184, 0.5);
    padding: 1px 6px;
    font-size: 10px;
    color: var(--text-muted);
}

.card-hint {
    font-style: italic;
}

/* Hidden state */
.card.hidden {
    display: none;
}

.roadmap-section {
    display: none;
}

.roadmap-section.active-roadmap {
    display: block;
}

.footer-note {
    margin-top: 16px;
    font-size: 11px;
    color: var(--text-muted);
    text-align: right;
}

/* Modal styles */
.card-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.card-modal-content {
    background: transparent;
    border-radius: 16px;
    padding: 0;
    max-width: 340px;
    width: 100%;
    height: auto;
    overflow-y: auto;
    box-shadow: none;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.card-modal-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: #888;
}

.card-popup {
    border-color: rgba(56, 189, 248, 0.7) !important;
    box-shadow: 0 22px 40px rgba(15, 23, 42, 0.95) !important;
    background: linear-gradient(145deg,
            rgba(15, 23, 42, 1),
            rgba(15, 23, 42, 0.98)) !important;
    border-radius: 16px;
    padding: 10px 12px;
    margin: 0;
    border: 2px solid var(--accent) !important;
    transform: none !important;
    width: 100%;
}