/*
 * ==============================================================================
 * @file        style.css
 * @brief       Stylesheet for the BMS Gateway ESP Web Tools installer page.
 * @author      Doodz (DoodzProg)
 * @date        2026-05-19
 * @version     1.3.0
 * @repository  https://github.com/DoodzProg/ESP32-BMS-Gateway-Multi-Protocol
 * ==============================================================================
 */

/* ── Reset & base ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg-page:      #08080b;
    --bg-card:      rgba(18, 18, 24, 0.85);
    --border:       rgba(255, 255, 255, 0.07);
    --border-hover: rgba(255, 255, 255, 0.14);
    --accent:       #00c8ff;
    --accent-dim:   rgba(0, 200, 255, 0.12);
    --accent-glow:  rgba(0, 200, 255, 0.35);
    --text-hi:      #f0f0f4;
    --text-mid:     #8a8a9a;
    --text-lo:      #4a4a5a;
    --badge-bg:     rgba(0, 200, 255, 0.10);
    --badge-border: rgba(0, 200, 255, 0.30);
    --step-bg:      rgba(255, 255, 255, 0.03);
}

html, body {
    height: 100%;
}

body {
    background-color: var(--bg-page);
    color: var(--text-mid);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 24px;
    background-image: radial-gradient(
        ellipse 60% 50% at 50% 40%,
        rgba(0, 200, 255, 0.04) 0%,
        transparent 70%
    );
}

/* ── Card ─────────────────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 44px 48px 40px;
    max-width: 520px;
    width: 100%;
    text-align: center;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow:
        0 0 0 1px rgba(255,255,255,0.04) inset,
        0 32px 80px rgba(0, 0, 0, 0.6),
        0 0 60px rgba(0, 200, 255, 0.04);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.card:hover {
    border-color: var(--border-hover);
    box-shadow:
        0 0 0 1px rgba(255,255,255,0.06) inset,
        0 32px 80px rgba(0, 0, 0, 0.7),
        0 0 80px rgba(0, 200, 255, 0.07);
}

/* ── Version badge ────────────────────────────────────────────── */
.badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 1.8px;
    text-transform: uppercase;
    color: var(--accent);
    background: var(--badge-bg);
    border: 1px solid var(--badge-border);
    border-radius: 20px;
    padding: 4px 14px;
    margin-bottom: 20px;
}

/* ── Heading ──────────────────────────────────────────────────── */
h1 {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-hi);
    letter-spacing: -0.3px;
    margin-bottom: 8px;
    line-height: 1.2;
}

.subtitle {
    font-size: 13px;
    color: var(--text-mid);
    margin-bottom: 32px;
    line-height: 1.6;
}

/* ── Feature pills ────────────────────────────────────────────── */
.features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-bottom: 32px;
}
.feat {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.5px;
    color: var(--text-mid);
    background: var(--step-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 5px 12px;
}

/* ── Steps list ───────────────────────────────────────────────── */
.steps {
    background: var(--step-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px 24px;
    text-align: left;
    margin-bottom: 28px;
}
.steps-title {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 14px;
}
.steps ol {
    padding-left: 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.steps li {
    font-size: 13px;
    color: var(--text-mid);
    line-height: 1.5;
}
.steps li strong {
    color: var(--text-hi);
    font-weight: 600;
}

/* ── Install button wrapper (glow effect) ─────────────────────── */
.install-wrap {
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
    filter: drop-shadow(0 0 14px var(--accent-glow));
}

/* ── esp-web-install-button custom properties ─────────────────── */
esp-web-install-button {
    --esp-tools-button-color:      var(--accent);
    --esp-tools-button-text-color: #000000;
}

/* ── Footer ───────────────────────────────────────────────────── */
.footer {
    font-size: 11px;
    color: var(--text-lo);
    line-height: 1.7;
}
.footer a {
    color: var(--text-mid);
    text-decoration: none;
    border-bottom: 1px solid var(--text-lo);
    transition: color 0.2s, border-color 0.2s;
}
.footer a:hover {
    color: var(--accent);
    border-color: var(--accent);
}

/* ── Divider ──────────────────────────────────────────────────── */
.divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 24px 0;
}

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 560px) {
    .card { padding: 32px 24px 28px; border-radius: 12px; }
    h1    { font-size: 22px; }
}