/* ============================================================
 * N4 VIP Login Guide — gold/black theme (matches main site)
 * Tokens come from /theme.css (linked before this file).
 * ============================================================ */

body {
    font-family: var(--n4-font);
    background:
        radial-gradient(ellipse 80% 50% at 50% -10%, rgba(255, 215, 0, 0.07), transparent),
        var(--n4-black);
    color: var(--n4-text);
    line-height: 1.7;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

.container {
    max-width: 920px;
    margin: 0 auto;
    padding: 1rem 1rem 2rem;
    position: relative;
}

/* ---------- header ---------- */
header {
    text-align: center;
    margin-bottom: 2.5rem;
    position: relative;
    padding-top: 2rem;
}

header h1 {
    font-size: 2.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(45deg, var(--n4-gold), #ff9d3c);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: none;
    filter: drop-shadow(0 2px 10px rgba(255, 215, 0, 0.25));
}

header h1 span {
    display: block;
    font-size: 1.4rem;
    font-weight: 600;
    background: none;
    -webkit-text-fill-color: var(--n4-text);
    color: var(--n4-text);
    filter: none;
    margin-top: 0.3rem;
}

.header-decoration {
    height: 4px;
    width: 90px;
    background: linear-gradient(90deg, var(--n4-gold), var(--n4-red));
    margin: 0.8rem auto 1.5rem;
    border-radius: 2px;
    box-shadow: 0 2px 12px rgba(255, 215, 0, 0.4);
}

.header-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.telegram-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--n4-gold-soft);
    color: var(--n4-gold);
    padding: 0.65rem 1.25rem;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.25s var(--n4-ease), box-shadow 0.25s, background 0.25s;
    border: 1px solid var(--n4-gold-border);
}

.telegram-link:hover {
    background: rgba(255, 215, 0, 0.2);
    transform: translateY(-2px);
    box-shadow: var(--n4-shadow-gold);
}

.pricing-btn {
    display: inline-flex;
    align-items: center;
    background: linear-gradient(135deg, var(--n4-gold), var(--n4-gold-deep));
    color: #0A0A0A;
    padding: 0.65rem 1.4rem;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 700;
    transition: transform 0.25s var(--n4-ease), box-shadow 0.25s;
    box-shadow: 0 6px 18px rgba(255, 215, 0, 0.3);
}

.pricing-btn:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 10px 26px rgba(255, 215, 0, 0.45);
}

/* ---------- intro ---------- */
.intro {
    background: linear-gradient(160deg, var(--n4-surface-2), var(--n4-surface));
    padding: 1.5rem 1.75rem;
    border-radius: var(--n4-radius);
    box-shadow: var(--n4-shadow);
    margin-bottom: 2.25rem;
    text-align: center;
    border: 1px solid var(--n4-gold-border);
    border-left: 4px solid var(--n4-gold);
    color: var(--n4-muted);
    font-size: 1.02rem;
}

/* ---------- tutorial steps ---------- */
.tutorial-section {
    margin-bottom: 3rem;
    position: relative;
}

.step {
    background: linear-gradient(160deg, var(--n4-surface-2), var(--n4-surface));
    border-radius: var(--n4-radius);
    box-shadow: var(--n4-shadow);
    margin-bottom: 1.75rem;
    overflow: hidden;
    transition: transform 0.3s var(--n4-ease), box-shadow 0.3s, border-color 0.3s;
    border: 1px solid rgba(255, 215, 0, 0.16);
    position: relative;
}

.step:hover {
    transform: translateY(-4px);
    box-shadow: var(--n4-shadow-gold);
    border-color: rgba(255, 215, 0, 0.4);
}

.step-header {
    display: flex;
    align-items: center;
    padding: 1.1rem 1.5rem;
    background: linear-gradient(90deg, rgba(255, 215, 0, 0.08), transparent);
    border-bottom: 1px solid rgba(255, 215, 0, 0.14);
}

.step-number {
    background: linear-gradient(135deg, var(--n4-gold), var(--n4-gold-deep));
    color: #0A0A0A;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    margin-right: 1rem;
    flex-shrink: 0;
    box-shadow: 0 4px 14px rgba(255, 215, 0, 0.4);
    transition: transform 0.3s var(--n4-ease);
}

.step:hover .step-number {
    transform: scale(1.1) rotate(-6deg);
}

.step h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
    color: var(--n4-text);
}

.step-content {
    padding: 1.5rem;
}

/* image stack */
.image-stack {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.step-image {
    width: 100%;
    max-width: 300px;
    height: auto;
    border-radius: var(--n4-radius-sm);
    border: 1px solid var(--n4-gold-border);
    display: block;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.5);
    background-color: #000;
    transition: transform 0.35s var(--n4-ease), box-shadow 0.35s;
    cursor: zoom-in;
}

.step-image:hover {
    transform: scale(1.04);
    box-shadow: var(--n4-shadow-gold);
}

.step-instructions {
    flex: 1;
    min-width: 260px;
}

.step-instructions p {
    margin-bottom: 1rem;
    font-size: 1rem;
    color: var(--n4-text);
}

.step-instructions strong {
    color: var(--n4-gold);
    font-weight: 700;
}

.step-instructions ul {
    padding-left: 0;
    margin: 0.75rem 0;
    color: var(--n4-muted);
    list-style: none;
}

.step-instructions li {
    margin-bottom: 0.6rem;
    position: relative;
    padding-left: 1.6em;
}

.step-instructions li::before {
    content: "✓";
    color: #0A0A0A;
    background: var(--n4-gold);
    font-weight: bold;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.15em;
    height: 1.15em;
    border-radius: 50%;
    font-size: 0.75em;
    position: absolute;
    left: 0;
    top: 0.25em;
    box-shadow: 0 2px 8px rgba(255, 215, 0, 0.4);
}

/* ---------- tips ---------- */
.tips {
    margin: 3rem 0;
}

.tips h3 {
    font-size: 1.55rem;
    text-align: center;
    margin-bottom: 1.75rem;
    color: var(--n4-gold);
    position: relative;
}

.tips h3::after {
    content: "";
    display: block;
    width: 70px;
    height: 4px;
    background: linear-gradient(90deg, var(--n4-gold), var(--n4-red));
    margin: 0.6rem auto 0;
    border-radius: 3px;
    box-shadow: 0 2px 10px rgba(255, 215, 0, 0.35);
}

.tip-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.1rem;
}

.tip-card {
    background: linear-gradient(160deg, var(--n4-surface-2), var(--n4-surface));
    padding: 1.35rem;
    border-radius: var(--n4-radius);
    box-shadow: var(--n4-shadow);
    display: flex;
    align-items: flex-start;
    border: 1px solid rgba(255, 215, 0, 0.16);
    border-top: 3px solid var(--n4-gold);
    transition: transform 0.3s var(--n4-ease), box-shadow 0.3s;
}

.tip-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--n4-shadow-gold);
}

.tip-icon {
    background: linear-gradient(135deg, var(--n4-gold), var(--n4-gold-deep));
    color: #0A0A0A;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-right: 0.85rem;
    flex-shrink: 0;
    font-size: 1rem;
    box-shadow: 0 4px 12px rgba(255, 215, 0, 0.35);
}

.tip-card p {
    margin: 0;
    font-size: 0.95rem;
    color: var(--n4-muted);
    line-height: 1.65;
}

/* ---------- footer ---------- */
footer {
    text-align: center;
    padding: 2rem 0 1rem;
    color: var(--n4-faint);
    font-size: 0.875rem;
    margin-top: 2rem;
    border-top: 1px solid rgba(255, 215, 0, 0.14);
}

footer a {
    color: var(--n4-gold);
    text-decoration: none;
    font-weight: 600;
}

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

/* ---------- back to top (kept for HTML compat; theme styles it) ---------- */
#backToTop {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: linear-gradient(135deg, var(--n4-gold), var(--n4-gold-deep));
    color: #0A0A0A;
    border: 1px solid var(--n4-gold-border);
    border-radius: 50%;
    width: 52px;
    height: 52px;
    cursor: pointer;
    display: none;
    box-shadow: 0 8px 24px rgba(255, 215, 0, 0.35);
    transition: transform 0.25s var(--n4-ease), box-shadow 0.25s;
    z-index: 99;
    align-items: center;
    justify-content: center;
}

#backToTop:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(255, 215, 0, 0.5);
}

#backToTop svg {
    width: 24px;
    height: 24px;
}

/* ---------- responsive ---------- */
@media (max-width: 768px) {
    header h1 { font-size: 1.7rem; }
    header h1 span { font-size: 1.15rem; }
    .step-content { padding: 1.1rem; }
    .tip-cards { grid-template-columns: 1fr; }
    .header-links { flex-direction: column; align-items: stretch; }
    .telegram-link, .pricing-btn { justify-content: center; }
    .step-image { max-width: 240px; }
}

@media (max-width: 480px) {
    .container { padding: 0.75rem 0.75rem 1.5rem; }
    header h1 { font-size: 1.45rem; }
    .step-header { padding: 1rem; }
    .step-number { width: 34px; height: 34px; font-size: 1rem; }
    #backToTop { width: 44px; height: 44px; bottom: 20px; right: 20px; }
}