/* SMSRiver public directory and home page layout. */
    @keyframes pulse {
        0%, 100% { opacity: 1; transform: scale(1); }
        50% { opacity: 0.35; transform: scale(0.9); }
    }
    .hero-grid {
        display: grid;
        grid-template-columns: 1.15fr 0.85fr;
        gap: 48px;
        align-items: center;
    }
    .search-box-wrapper {
        background: var(--bg-surface);
        border: 1px solid var(--border-subtle);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
        display: flex;
        align-items: center;
        padding: 5px;
        margin-bottom: 20px;
        transition: border-color 0.15s ease, box-shadow 0.15s ease;
    }
    .search-box-wrapper:focus-within {
        border-color: var(--accent-cyan);
        box-shadow: 0 0 0 2px var(--accent-cyan-border);
    }
    .search-country-wrapper {
        display: flex;
        align-items: center;
        padding-left: 8px;
    }
    .search-country-select {
        border: none;
        background: transparent;
        font-size: 0.9rem;
        font-weight: 600;
        font-family: var(--sans-font);
        color: var(--text-primary);
        padding: 9px 12px;
        cursor: pointer;
        outline: none;
        white-space: nowrap;
    }
    .search-country-select option {
        background: var(--bg-surface-elevated);
        color: var(--text-primary);
        font-family: var(--sans-font);
    }
    .search-divider {
        width: 1px;
        height: 26px;
        background: var(--border-subtle);
    }
    .search-input-wrapper {
        flex: 1;
        display: flex;
        align-items: center;
        padding-left: 10px;
    }
    .search-input-field {
        width: 100%;
        border: none;
        background: transparent;
        padding: 9px 12px;
        font-size: 0.92rem;
        font-family: var(--sans-font);
        color: var(--text-primary);
        outline: none;
    }
    .search-input-field::placeholder {
        color: var(--text-muted);
        font-family: var(--sans-font);
    }
    .search-submit-btn {
        background: var(--accent-cyan);
        color: #ffffff;
        border: 1px solid var(--accent-cyan);
        border-radius: var(--radius-sm);
        padding: 10px 18px;
        font-weight: 700;
        font-size: 0.88rem;
        font-family: var(--sans-font);
        cursor: pointer;
        transition: all 0.15s ease;
        white-space: nowrap;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        min-height: 44px;
        box-shadow: var(--shadow-sm);
    }
    .search-submit-btn:hover {
        background: var(--accent-cyan-hover);
        border-color: var(--accent-cyan-hover);
        box-shadow: var(--shadow-md);
        transform: translateY(-1px);
    }
    .quick-pill {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 6px 14px;
        background: var(--bg-surface-elevated);
        border: 1px solid var(--border-subtle);
        border-radius: var(--radius-pill);
        font-size: 0.82rem;
        font-weight: 600;
        font-family: var(--sans-font);
        color: var(--text-secondary);
        text-decoration: none;
        transition: all 0.15s ease;
    }
    .quick-pill:hover, .quick-pill.active {
        border-color: var(--accent-cyan-border);
        color: var(--accent-cyan);
        background: var(--accent-cyan-subtle);
    }
    .hero-dispatcher-card {
        background: #ffffff;
        border: 1px solid var(--border-subtle);
        border-radius: var(--radius-lg);
        padding: 24px 26px;
        box-shadow: var(--shadow-md);
        position: relative;
    }
    .hero-dispatcher-line {
        padding: 16px 18px;
        background: #ffffff;
        border: 1px solid var(--border-subtle);
        border-radius: var(--radius-md);
        margin-bottom: 14px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
        box-shadow: var(--shadow-xs);
    }
    .hero-dispatcher-line:hover {
        border-color: var(--accent-cyan-border);
        box-shadow: var(--shadow-sm);
        transform: translateY(-1px);
    }

    /* Streaming Waterfall Live Messages Feed */
    .stream-waterfall-container {
        background: #ffffff;
        border: 1px solid var(--border-subtle);
        border-radius: var(--radius-md);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
        contain: layout;
    }
    .stream-waterfall-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 11px 18px;
        background: #f8fafc;
        border-bottom: 1px solid var(--border-subtle);
        font-family: var(--sans-font);
        font-size: 0.74rem;
        font-weight: 700;
        color: var(--text-muted);
        letter-spacing: 0.05em;
        text-transform: uppercase;
    }
    .stream-waterfall-feed {
        display: flex;
        flex-direction: column;
    }
    .stream-event-card {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding: 14px 18px;
        border-bottom: 1px solid var(--border-subtle);
        transition: background-color 0.15s ease;
        background: #ffffff;
    }
    .stream-event-card:last-child {
        border-bottom: none;
    }
    .stream-event-card:hover {
        background: #f8fafc;
    }
    .stream-event-left {
        display: flex;
        align-items: center;
        gap: 12px;
        min-width: 270px;
        flex-shrink: 0;
    }
    .stream-phone-line {
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .stream-phone-link {
        font-family: var(--mono-font);
        font-weight: 700;
        color: var(--text-primary);
        text-decoration: none;
        font-size: 0.92rem;
        transition: color 0.15s ease;
    }
    .stream-phone-link:hover {
        color: var(--accent-cyan);
    }
    .stream-service-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 4px 10px;
        border-radius: var(--radius-pill);
        background: #f1f5f9;
        border: 1px solid var(--border-subtle);
        font-size: 0.76rem;
        font-weight: 700;
        color: var(--text-secondary);
        font-family: var(--sans-font);
    }
    .stream-event-payload {
        display: flex;
        align-items: center;
        gap: 12px;
        flex: 1;
        min-width: 0;
    }
    .stream-otp-capsule {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 5px 12px;
        border-radius: var(--radius-sm);
        background: #ecfdf5;
        border: 1px solid #a7f3d0;
        flex-shrink: 0;
    }
    .stream-otp-label {
        font-family: var(--mono-font);
        font-size: 0.72rem;
        font-weight: 800;
        color: #047857;
        letter-spacing: 0.04em;
    }
    .stream-otp-digits {
        font-family: var(--mono-font);
        font-size: 0.95rem;
        font-weight: 800;
        color: #065f46;
        letter-spacing: 0.08em;
    }
    .stream-msg-text {
        color: var(--text-secondary);
        font-size: 0.88rem;
        line-height: 1.45;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    .stream-event-actions {
        display: flex;
        align-items: center;
        gap: 8px;
        flex-shrink: 0;
    }
    .stream-timestamp {
        font-family: var(--mono-font);
        font-size: 0.76rem;
        color: var(--text-muted);
        white-space: nowrap;
    }
    .stream-inbox-link {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 32px;
        height: 32px;
        border-radius: var(--radius-sm);
        border: 1px solid var(--border-subtle);
        background: #ffffff;
        color: var(--text-secondary);
        text-decoration: none;
        transition: all 0.15s ease;
        box-shadow: var(--shadow-xs);
    }
    .stream-inbox-link:hover {
        border-color: var(--accent-cyan-border);
        color: var(--accent-cyan);
        background: var(--accent-cyan-subtle);
    }
    .btn-copy.btn-copied {
        background: var(--carrier-green-subtle) !important;
        border-color: var(--carrier-green-border) !important;
        color: #047857 !important;
    }
    .protocol-partner-item {
        display: inline-flex;
        align-items: center;
        gap: 7px;
        color: var(--text-secondary);
        background: var(--bg-surface-elevated);
        border: 1px solid var(--border-subtle);
        padding: 5px 12px;
        border-radius: var(--radius-pill);
        transition: all 0.15s ease;
        font-size: 0.78rem;
        font-weight: 700;
        font-family: var(--sans-font);
        letter-spacing: 0.02em;
        text-decoration: none;
    }
    .protocol-partner-item:hover {
        color: var(--text-primary);
        border-color: var(--accent-cyan-border);
        background: #ffffff;
        box-shadow: var(--shadow-xs);
        transform: translateY(-1px);
    }

    /* Country Cards Grid */
    .country-grid-layout {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 14px;
    }
    .country-card {
        background: var(--bg-surface);
        border: 1px solid var(--border-subtle);
        border-radius: var(--radius-md);
        padding: 14px 16px;
        display: flex;
        align-items: center;
        gap: 12px;
        text-decoration: none;
        transition: all 0.15s ease;
        box-shadow: var(--shadow-sm);
    }
    .country-card:hover {
        border-color: var(--accent-cyan-border);
        background: var(--bg-surface-elevated);
        transform: translateY(-1px);
        box-shadow: var(--shadow-md);
    }
    .country-card:hover .country-card-arrow {
        transform: translateX(3px);
        color: var(--accent-cyan) !important;
    }
    .country-flag-icon {
        width: 30px;
        height: 20px;
        border-radius: var(--radius-sm);
        border: 1px solid rgba(0, 0, 0, 0.08);
        overflow: hidden;
        flex-shrink: 0;
        box-shadow: 0 1px 2px rgba(0,0,0,0.06);
    }

    /* Number Card Item */
    .number-card-item {
        background: #ffffff;
        border: 1px solid var(--border-subtle);
        border-radius: var(--radius-md);
        padding: 18px 20px;
        transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
        box-shadow: var(--shadow-sm);
        display: flex;
        flex-direction: column;
        justify-content: space-between;
    }
    .number-card-item:hover {
        border-color: var(--accent-cyan);
        background: #ffffff;
        transform: translateY(-2px);
        box-shadow: 0 8px 24px -4px rgba(3, 105, 161, 0.12), 0 2px 6px -2px rgba(15, 23, 42, 0.04);
    }
    .number-action-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 6px;
        width: 100%;
        text-align: center;
        background: #09090b;
        color: #ffffff;
        border: 1px solid #09090b;
        padding: 9px 12px;
        border-radius: var(--radius-sm);
        text-decoration: none;
        font-weight: 700;
        font-size: 0.84rem;
        font-family: var(--sans-font);
        transition: all 0.15s ease;
        box-shadow: var(--shadow-xs);
    }
    .number-action-btn:hover {
        background: var(--accent-cyan);
        border-color: var(--accent-cyan);
        color: #ffffff;
        box-shadow: var(--shadow-sm);
        transform: translateY(-1px);
    }
    .number-action-btn-native {
        background: var(--carrier-green-subtle);
        color: #047857;
        border-color: var(--carrier-green-border);
    }
    .number-action-btn-native:hover {
        background: rgba(5, 150, 105, 0.15);
        border-color: var(--carrier-green);
        color: #047857;
    }

    /* Carrier Switchboard Tab Bar */
    .switchboard-tab-btn {
        background: var(--bg-surface);
        border: 1px solid var(--border-subtle);
        color: var(--text-secondary);
        padding: 8px 16px;
        border-radius: var(--radius-pill);
        font-size: 0.84rem;
        font-weight: 600;
        font-family: var(--sans-font);
        cursor: pointer;
        transition: all 0.15s ease;
        display: inline-flex;
        align-items: center;
        gap: 8px;
        white-space: nowrap;
        flex-shrink: 0;
    }
    .switchboard-tab-btn:hover {
        background: var(--bg-surface-elevated);
        border-color: var(--border-strong);
        color: var(--text-primary);
    }
    .switchboard-tab-btn.active {
        background: #09090b;
        color: #ffffff;
        border-color: #09090b;
        box-shadow: var(--shadow-sm);
    }
    .tabs-scroll-container {
        position: relative;
        margin-bottom: 28px;
    }
    .tabs-scroll-bar {
        display: flex;
        gap: 8px;
        overflow-x: auto;
        padding-bottom: 14px;
        border-bottom: 1px solid var(--border-subtle);
        -webkit-overflow-scrolling: touch;
        scrollbar-width: thin;
    }
    .tabs-scroll-container::after {
        content: "";
        position: absolute;
        top: 0;
        right: 0;
        bottom: 14px;
        width: 48px;
        background: linear-gradient(to right, transparent, var(--bg-base));
        pointer-events: none;
    }

    /* 3-Step Flow */
    .steps-flow-grid {
        display: grid;
        grid-template-columns: 1fr auto 1fr auto 1fr;
        gap: 16px;
        align-items: center;
    }
    .step-box {
        background: var(--bg-surface);
        border: 1px solid var(--border-subtle);
        border-radius: var(--radius-md);
        padding: 24px;
        box-shadow: var(--shadow-sm);
        display: flex;
        flex-direction: column;
        gap: 10px;
        transition: transform 0.15s ease;
    }
    .step-box:hover {
        transform: translateY(-2px);
        border-color: var(--border-strong);
    }

    /* FAQ Accordion */
    .faq-item {
        background: var(--bg-surface);
        border: 1px solid var(--border-subtle);
        border-radius: var(--radius-md);
        padding: 16px 20px;
        transition: all 0.2s ease;
        box-shadow: var(--shadow-xs);
    }
    .faq-item:hover {
        border-color: var(--border-strong);
    }
    .faq-item[open] {
        border-color: var(--accent-cyan-border);
        box-shadow: var(--shadow-sm);
    }
    .faq-summary {
        font-weight: 700;
        font-size: 0.95rem;
        color: var(--text-primary);
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        list-style: none;
        user-select: none;
    }
    .faq-summary::-webkit-details-marker,
    .faq-summary::marker {
        display: none !important;
    }
    .faq-summary svg {
        transition: transform 0.2s ease;
        flex-shrink: 0;
    }
    .faq-item[open] .faq-summary svg {
        transform: rotate(180deg);
        color: var(--accent-cyan);
    }
    .faq-body {
        margin-top: 12px;
        padding-top: 12px;
        border-top: 1px solid var(--border-subtle);
        color: var(--text-secondary);
        font-size: 0.88rem;
        line-height: 1.6;
    }

    /* Filter Tabs */
    .filter-tab-btn {
        background: var(--bg-surface);
        border: 1px solid var(--border-subtle);
        color: var(--text-secondary);
        padding: 6px 14px;
        border-radius: var(--radius-pill);
        font-size: 0.82rem;
        font-weight: 600;
        font-family: var(--sans-font);
        cursor: pointer;
        transition: all 0.15s ease;
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    .filter-tab-btn:hover, .filter-tab-btn.active {
        background: var(--accent-cyan-subtle);
        color: var(--accent-cyan);
        border-color: var(--accent-cyan-border);
    }

    @media (max-width: 980px) {
        .hero-grid { grid-template-columns: 1fr; gap: 32px; }
        .steps-flow-grid { grid-template-columns: 1fr; }
        .country-grid-layout { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
        .stream-event-card {
            flex-direction: column;
            align-items: stretch;
            gap: 12px;
            padding: 16px 18px;
            border-bottom: 1px solid var(--border-subtle);
        }
        .stream-event-left {
            min-width: 0;
            width: 100%;
            justify-content: space-between;
        }
        .stream-event-payload {
            width: 100%;
            flex-direction: column;
            align-items: flex-start;
            gap: 8px;
        }
        .stream-msg-text {
            white-space: normal;
            word-break: break-word;
            line-height: 1.5;
            max-height: 4.8em;
            overflow: hidden;
        }
        .stream-event-actions {
            width: 100%;
            justify-content: space-between;
            padding-top: 10px;
            border-top: 1px solid var(--border-subtle);
        }
    }
    @media (max-width: 640px) {
        .search-box-wrapper { flex-direction: column; gap: 8px; padding: 10px; }
        .search-divider { display: none; }
        .search-country-select, .search-input-field, .search-submit-btn { width: 100%; }
        .country-grid-layout { grid-template-columns: 1fr; }
        .developer-platform-grid { grid-template-columns: minmax(0, 1fr) !important; }
        .developer-platform-grid > * { min-width: 0; }
    }