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

body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ── BOTTOM TABS BAR ── */
#topbar {
    height: var(--bar-h);
    background: var(--surface);
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 12px;
    flex-shrink: 0;
    position: relative;
    z-index: 100;
    order: 2;
}

/* ── TABS STRIP ── */
#tabs-track {
    flex: 1;
    display: flex;
    align-items: center;
    min-width: 0;
    position: relative;
}

    #tabs-track::before,
    #tabs-track::after {
        content: '';
        position: absolute;
        top: 0;
        bottom: 0;
        width: 28px;
        pointer-events: none;
        z-index: 2;
        opacity: 0;
        transition: opacity 0.2s;
    }

    #tabs-track::before {
        left: 0;
        background: linear-gradient(to right, var(--surface), transparent);
    }

    #tabs-track::after {
        right: 0;
        background: linear-gradient(to left, var(--surface), transparent);
    }

    #tabs-track.fade-left::before { opacity: 1; }
    #tabs-track.fade-right::after { opacity: 1; }

.tabs-arrow {
    width: 24px;
    height: 30px;
    background: var(--surface2);
    border: 1px solid var(--white-alpha-12);
    border-radius: 5px;
    color: var(--text-dim);
    font-size: 13px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: color 0.12s, border-color 0.12s, background 0.12s;
    z-index: 3;
    line-height: 1;
}

    .tabs-arrow:hover {
        color: var(--accent);
        border-color: var(--accent);
        background: var(--gold-alpha-08);
    }

    .tabs-arrow.visible { display: flex; }

#tabs-scroll {
    flex: 1;
    overflow-x: auto;
    overflow-y: hidden;
    display: flex;
    align-items: center;
    scrollbar-width: none;
    min-width: 0;
}

    #tabs-scroll::-webkit-scrollbar { display: none; }

#tabs {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 0;
    min-width: max-content;
}

.tab {
    height: 34px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 10px 0 12px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, transform 0.1s;
    max-width: 180px;
    min-width: 90px;
    position: relative;
    user-select: none;
}

    .tab:hover {
        background: var(--navy-hover);
        border-color: var(--white-alpha-20);
    }

    .tab.active {
        background: linear-gradient(135deg, var(--navy-hover) 0%, var(--navy-deep) 100%);
        border-color: var(--accent);
        box-shadow: 0 0 12px var(--gold-alpha-25), inset 0 -1px 0 var(--gold-alpha-20);
    }

    .tab:active { transform: scale(0.97); }

.tab-favicon {
    width: 14px;
    height: 14px;
    border-radius: 3px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    background: var(--accent);
    color: white;
    font-weight: 700;
}

.tab-label {
    flex: 1;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-dim);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    letter-spacing: 0.02em;
}

    .tab.active .tab-label { color: var(--text); }

.tab-close {
    width: 16px;
    height: 16px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: var(--text-dim);
    flex-shrink: 0;
    transition: background 0.12s, color 0.12s;
    line-height: 1;
}

    .tab-close:hover {
        background: var(--red-pink-alpha-20);
        color: var(--red-bright);
    }

/* ── ADD TAB BUTTON ── */
#btn-add {
    height: 32px;
    width: 32px;
    border-radius: 6px;
    border: 1px dashed var(--border);
    background: transparent;
    color: var(--text-dim);
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color 0.15s, color 0.15s, background 0.15s;
    flex-shrink: 0;
    line-height: 1;
}

    #btn-add:hover {
        border-color: var(--accent);
        color: var(--accent);
        background: var(--gold-alpha-10);
    }

/* ── BOTTOM BAR ── */
/* ── CONTENT AREA ── */
#content {
    flex: 1;
    position: relative;
    overflow: hidden;
    order: 1;
}

.page-frame {
    position: absolute;
    inset: 0;
    display: none;
    flex-direction: column;
}

    .page-frame.active {
        display: flex;
    }


iframe {
    flex: 1;
    border: none;
    background: var(--white);
    display: block;
}

/* ── BLOCKED NOTICE ── */
.blocked-notice {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    background: var(--bg);
    color: var(--text-dim);
    text-align: center;
    padding: 40px;
}

.blocked-icon {
    font-size: 48px;
    opacity: 0.4;
}

.blocked-title {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 400;
    color: var(--text);
}

.blocked-msg {
    font-size: 12px;
    line-height: 1.7;
    max-width: 480px;
}

.blocked-url {
    font-size: 11px;
    color: var(--accent);
    word-break: break-all;
    background: var(--surface2);
    padding: 8px 16px;
    border-radius: 6px;
    border: 1px solid var(--border);
}

.open-external {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 32px;
    padding: 0 16px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-family: var(--font-mono-jetbrains);
    font-size: 11px;
    cursor: pointer;
    text-decoration: none;
    transition: border-color 0.15s;
}

    .open-external:hover {
        border-color: var(--accent);
        color: var(--accent);
    }

/* ── EMPTY STATE ── */
#empty-state {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    background: var(--bg);
}

    #empty-state .big-icon {
        font-size: 56px;
        opacity: 0.15;
    }

    #empty-state h2 {
        font-family: var(--font-heading);
        font-size: 24px;
        font-weight: 400;
        color: var(--text);
        opacity: 0.5;
    }

    #empty-state p {
        font-size: 12px;
        color: var(--text-dim);
    }

#empty-btn-add {
    height: 38px;
    padding: 0 20px;
    background: var(--accent);
    border: none;
    border-radius: 7px;
    color: var(--navy);
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    letter-spacing: 0.03em;
    transition: opacity 0.15s;
    margin-top: 4px;
}

    #empty-btn-add:hover {
        opacity: 0.85;
    }

/* ── MODAL ── */
#modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--black-alpha-70);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999;
    backdrop-filter: blur(4px);
}

    #modal-overlay.open {
        display: flex;
    }

#modal {
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 28px;
    width: 480px;
    max-width: 90vw;
    box-shadow: 0 24px 80px var(--black-alpha-50);
    animation: modal-in 0.18s ease;
}

@keyframes modal-in {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(8px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

#modal h3 {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 400;
    margin-bottom: 6px;
}

#modal p {
    font-size: 11px;
    color: var(--text-dim);
    margin-bottom: 20px;
    line-height: 1.6;
}

#modal label {
    display: block;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 6px;
}

#modal-url {
    width: 100%;
    height: 36px;
    background: var(--white-alpha-07);
    border: 1px solid var(--border-light);
    border-radius: 6px;
    color: var(--text);
    font-family: var(--font-body);
    font-size: 12px;
    padding: 0 12px;
    outline: none;
    margin-bottom: 16px;
    transition: border-color 0.15s;
}

    #modal-url:focus {
        border-color: var(--accent);
    }

#modal-name {
    width: 100%;
    height: 36px;
    background: var(--white-alpha-07);
    border: 1px solid var(--border-light);
    border-radius: 6px;
    color: var(--text);
    font-family: var(--font-body);
    font-size: 12px;
    padding: 0 12px;
    outline: none;
    margin-bottom: 20px;
    transition: border-color 0.15s;
}

    #modal-name:focus {
        border-color: var(--accent);
    }

.modal-row {
    display: flex;
    gap: 10px;
}

.modal-btn {
    flex: 1;
    height: 36px;
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    letter-spacing: 0.02em;
    transition: opacity 0.15s;
}

    .modal-btn.cancel {
        background: var(--white-alpha-07);
        border: 1px solid var(--border-light);
        color: var(--text-dim);
    }

        .modal-btn.cancel:hover {
            color: var(--text);
        }

    .modal-btn.confirm {
        background: var(--accent);
        border: none;
        color: var(--navy);
    }

        .modal-btn.confirm:hover {
            opacity: 0.85;
        }

/* Quick links */
.quick-links {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 16px;
}

.quick-chip {
    height: 24px;
    padding: 0 10px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-family: var(--font-mono-jetbrains);
    font-size: 10px;
    color: var(--text-dim);
    cursor: pointer;
    transition: border-color 0.12s, color 0.12s;
}

    .quick-chip:hover {
        border-color: var(--accent);
        color: var(--accent);
        background: var(--gold-alpha-10);
    }

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent2);
    flex-shrink: 0;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }

    50% {
        opacity: 0.3;
    }
}

.tab.loading .tab-favicon {
    background: var(--gold);
}