body.browser-page {
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 32px;
    padding-bottom: 120px;
    overflow: hidden;
    background: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.04), transparent 35%),
        radial-gradient(circle at 80% 10%, rgba(255, 255, 255, 0.03), transparent 30%),
        #000000;
}

.page-subtitle {
    color: rgba(255, 255, 255, 0.6);
    font-size: 13px;
    margin-top: 8px;
    text-transform: lowercase;
    letter-spacing: 0.08em;
}

.tab-rail {
    display: flex;
    gap: 10px;
    margin-bottom: 14px;
}

.tab {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.06);
    color: rgba(255, 255, 255, 0.9);
    font-size: 12px;
    text-transform: lowercase;
    letter-spacing: 0.08em;
}

.tab.ghost {
    border-style: dashed;
    color: rgba(255, 255, 255, 0.45);
    background: rgba(255, 255, 255, 0.03);
}

.address-bar {
    width: 100%;
    max-width: 960px;
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 16px;
    padding: 12px 16px;
    backdrop-filter: blur(12px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.nav-cluster {
    display: flex;
    gap: 8px;
}

.nav-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.85);
    border-radius: 12px;
    padding: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    color: white;
    transform: translateY(-1px);
}

.nav-btn .material-icons {
    font-size: 20px;
}

.address-form {
    flex: 1;
}

#sj-address {
    width: 100%;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 12px;
    color: white;
    padding: 12px 14px;
    font-size: 14px;
    outline: none;
    font-family: "Run", Arial, sans-serif;
    transition: all 0.25s ease;
}

#sj-address::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

#sj-address:focus {
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.05);
}

.browser-frame {
    position: relative;
    width: 100%;
    max-width: 1200px;
    margin-top: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    overflow: hidden;
    min-height: 60vh;
    background: rgba(255, 255, 255, 0.03);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
}

#sj-frame {
    width: 100%;
    height: 70vh;
    border: none;
    display: none;
    background: #0b0b0b;
}

#sj-frame.is-visible {
    display: block;
}

#sj-frame.is-visible ~ .browser-empty {
    display: none;
}

.browser-empty {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
}

.browser-empty .material-icons {
    font-size: 36px;
    color: rgba(255, 255, 255, 0.8);
}

.browser-feedback {
    width: 100%;
    max-width: 960px;
    margin-top: 12px;
}

#sj-error {
    color: #ff7b7b;
    font-size: 13px;
    min-height: 18px;
}

#sj-error-code {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    padding: 10px;
    color: #8ab4ff;
    font-family: "Courier New", Courier, monospace;
    font-size: 12px;
    white-space: pre-wrap;
    overflow-x: auto;
}

/* 404 page */
body.error-page {
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: #000000;
}

.error-card {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    padding: 24px;
    border-radius: 16px;
    text-align: center;
    color: white;
    max-width: 420px;
}

.error-card h1 {
    margin-bottom: 10px;
    font-size: 24px;
    letter-spacing: 0.08em;
}

.error-card p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 12px;
}

.error-card a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-weight: 500;
}