/* style.css - Simple IG Analyser Official Dark Theme v3.7 */
:root {
    --bg-main: #0f172a;
    --bg-card: #1e293b;
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    --cyan: #38bdf8;
    --cyan-hover: #0ea5e9;
    --amber: #fbbf24;
    --border: #334155;
    --green-check: #10b981;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Top Navigation Bar */
.top-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 40px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 20px;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    padding: 8px 16px;
    border-radius: 8px;
    transition: 0.3s;
}

.nav-link:hover {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
    color: var(--cyan);
    background-color: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.2);
}

header {
    text-align: center;
    margin-bottom: 40px;
}

.header-logo {
    width: 64px;
    height: 64px;
    margin-bottom: 10px;
}

h1 {
    color: var(--cyan);
    font-size: 2.5rem;
    margin-top: 0;
    margin-bottom: 5px;
    font-weight: 800;
}

.tagline {
    font-size: 1.1rem;
    color: var(--amber);
    font-weight: 600;
}

.main-card {
    background-color: var(--bg-card);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border);
}

h2 {
    color: var(--text-main);
    border-bottom: 1px solid var(--border);
    padding-bottom: 10px;
    margin-top: 0;
}

h3 {
    color: var(--amber);
}

.features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin: 30px 0;
}

@media (max-width: 600px) {
    .features { grid-template-columns: 1fr; }
}

.feature-item {
    background: var(--bg-main);
    padding: 25px;
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: 0.3s;
}

.feature-item:hover {
    border-color: var(--cyan);
}

/* Screenshot Grid */
.how-it-works {
    margin-top: 50px;
    border-top: 1px solid var(--border);
    padding-top: 30px;
}

.screenshot-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 25px;
}

@media (max-width: 600px) {
    .screenshot-grid { grid-template-columns: 1fr; }
}

.step-card {
    background: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 15px;
    text-align: center;
}

.step-card p {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-main);
}

.screenshot-img {
    max-width: 100%;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.action-group {
    display: flex;
    gap: 15px;
    margin-top: 35px;
    justify-content: center;
}

.btn {
    padding: 10px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    font-size: 14px;
    transition: 0.2s;
    cursor: pointer;
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-secondary { 
    background-color: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
}

.btn-secondary:hover { 
    border-color: var(--text-main);
    color: var(--text-main);
}

footer {
    margin-top: 50px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Copy Button Style */
.copy-btn {
    background: none; border: none; cursor: pointer; padding: 0; margin-left: 8px;
    display: inline-flex; align-items: center; vertical-align: middle;
    opacity: 0.6; transition: 0.2s;
}
.copy-btn:hover { opacity: 1; }
.copy-icon { width: 16px; height: 16px; fill: var(--cyan); display: block; }
.copy-check-icon { width: 16px; height: 16px; fill: var(--green-check); display: none; }
.copy-btn.copied .copy-icon { display: none; }
.copy-btn.copied .copy-check-icon { display: block; }