/* ========================================================
           Onboarding / Welcome Feature Tour Modal
           ======================================================== */
        .onboarding-overlay {
            position: fixed;
            inset: 0;
            background: rgba(8, 7, 12, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            z-index: 3000;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            opacity: 0;
            pointer-events: none;
            visibility: hidden;
            transition: opacity 0.32s cubic-bezier(0.16, 1, 0.3, 1),
                        visibility 0s linear 0.32s;
            will-change: opacity;
        }
        .onboarding-overlay.active {
            opacity: 1;
            pointer-events: auto;
            visibility: visible;
            transition: opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1),
                        visibility 0s linear 0s;
        }
        .onboarding-overlay.closing {
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.24s cubic-bezier(0.16, 1, 0.3, 1);
        }
        /* Hard isolation guard: a closed onboarding tour can never intercept input */
        .onboarding-overlay:not(.active) {
            pointer-events: none !important;
            visibility: hidden !important;
        }
        .onboarding-overlay:not(.active) * {
            pointer-events: none !important;
        }

        .onboarding-modal {
            position: relative;
            width: 100%;
            max-width: 380px;
            background: rgba(24, 21, 29, 0.96);
            border: 1px solid rgba(139, 92, 246, 0.35);
            border-radius: 28px;
            padding: 26px 22px 22px;
            box-shadow: 0 25px 60px rgba(0, 0, 0, 0.85), 0 0 45px rgba(124, 58, 237, 0.2);
            text-align: center;
            overflow: hidden;
            transform: scale3d(0.88, 0.88, 1) translateY(24px);
            opacity: 0;
            transition: transform 0.38s cubic-bezier(0.16, 1, 0.3, 1),
                        opacity 0.28s ease,
                        box-shadow 0.38s ease;
            will-change: transform, opacity, box-shadow;
        }
        .onboarding-overlay.active .onboarding-modal {
            opacity: 1;
            transform: scale3d(1, 1, 1) translateY(0);
            box-shadow: 0 25px 65px rgba(0, 0, 0, 0.9), 0 0 55px rgba(124, 58, 237, 0.3);
            animation: modalSpringOpen 0.44s cubic-bezier(0.16, 1, 0.3, 1) forwards;
        }
        .onboarding-overlay.closing .onboarding-modal {
            transform: scale3d(0.9, 0.9, 1) translateY(18px);
            opacity: 0;
            transition: transform 0.24s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease;
        }
        @keyframes modalSpringOpen {
            0% {
                opacity: 0;
                transform: scale3d(0.86, 0.86, 1) translateY(26px);
            }
            65% {
                transform: scale3d(1.025, 1.025, 1) translateY(-2px);
            }
            100% {
                opacity: 1;
                transform: scale3d(1, 1, 1) translateY(0);
            }
        }

        .btn-onboarding-close {
            position: absolute;
            top: 16px;
            inset-inline-end: 16px;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-muted);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.18s ease;
            z-index: 10;
        }
        .btn-onboarding-close:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.25);
        }
        .btn-onboarding-close:active {
            transform: scale(0.92);
        }
        .btn-onboarding-close svg {
            width: 16px;
            height: 16px;
            fill: currentColor;
        }

        /* Top Icon Circle with Ambient Theme Glow & Morphing */
        .onboarding-icon-wrap {
            position: relative;
            width: 62px;
            height: 62px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
            transition: background 0.35s cubic-bezier(0.16, 1, 0.3, 1),
                        box-shadow 0.35s cubic-bezier(0.16, 1, 0.3, 1),
                        border-color 0.35s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .onboarding-overlay.active .onboarding-icon-wrap {
            animation: obIconEntrance 0.48s cubic-bezier(0.175, 0.885, 0.32, 1.275) 0.06s both;
        }
        @keyframes obIconEntrance {
            0% {
                opacity: 0;
                transform: scale3d(0.65, 0.65, 1) translateY(-14px);
            }
            70% {
                transform: scale3d(1.12, 1.12, 1) translateY(2px);
            }
            100% {
                opacity: 1;
                transform: scale3d(1, 1, 1) translateY(0);
            }
        }
        .onboarding-icon-wrap.morphing {
            animation: obIconMorphPulse 0.36s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }
        @keyframes obIconMorphPulse {
            0% { transform: scale3d(1, 1, 1); }
            40% { transform: scale3d(0.85, 0.85, 1); }
            75% { transform: scale3d(1.12, 1.12, 1); }
            100% { transform: scale3d(1, 1, 1); }
        }
        .onboarding-icon-wrap svg {
            position: absolute;
            width: 30px;
            height: 30px;
            fill: #ffffff;
            opacity: 0;
            transform: scale3d(0.65, 0.65, 1) rotate(-8deg);
            transition: opacity 0.28s cubic-bezier(0.16, 1, 0.3, 1),
                        transform 0.32s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            pointer-events: none;
        }
        .onboarding-icon-wrap svg.active {
            opacity: 1;
            transform: scale3d(1, 1, 1) rotate(0deg);
        }
        .onboarding-icon-wrap.theme-purple {
            background: linear-gradient(135deg, #7c3aed 0%, #a855f7 100%);
            border: 1px solid rgba(167, 139, 250, 0.4);
            box-shadow: 0 10px 25px rgba(124, 58, 237, 0.45);
        }
        .onboarding-icon-wrap.theme-cyan {
            background: linear-gradient(135deg, #0284c7 0%, #38bdf8 100%);
            border: 1px solid rgba(56, 189, 248, 0.4);
            box-shadow: 0 10px 25px rgba(2, 132, 199, 0.45);
        }
        .onboarding-icon-wrap.theme-gold {
            background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
            border: 1px solid rgba(251, 191, 36, 0.4);
            box-shadow: 0 10px 25px rgba(245, 158, 11, 0.45);
        }

        /* Numbered Steps Progress Indicator (Wi-Fi modal style with smooth progress line) */
        .onboarding-steps-indicator {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            margin-bottom: 14px;
        }
        .onboarding-overlay.active .onboarding-steps-indicator {
            animation: obElementEntrance 0.38s cubic-bezier(0.16, 1, 0.3, 1) 0.1s both;
        }
        .onboarding-step-item {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(41, 37, 36, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.14);
            color: var(--text-muted);
            font-size: 11px;
            font-weight: 700;
            cursor: pointer;
            transition: transform 0.28s cubic-bezier(0.175, 0.885, 0.32, 1.275),
                        background 0.26s ease,
                        border-color 0.26s ease,
                        color 0.26s ease,
                        box-shadow 0.28s ease;
        }
        .onboarding-step-item:active {
            transform: scale(0.92);
        }
        .onboarding-step-item.active {
            background: var(--primary-gradient);
            border-color: #a78bfa;
            color: #ffffff;
            box-shadow: 0 0 16px rgba(139, 92, 246, 0.6);
            transform: scale(1.15);
        }
        .onboarding-step-item.completed {
            background: rgba(139, 92, 246, 0.28);
            border-color: rgba(167, 139, 250, 0.55);
            color: #c4b5fd;
            transform: scale(1);
        }
        .onboarding-step-line {
            position: relative;
            width: 22px;
            height: 2.5px;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 3px;
            overflow: hidden;
        }
        .onboarding-step-line::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, #7c3aed, #a78bfa);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
        }
        html[lang="ar"] .onboarding-step-line::after,
        [dir="rtl"] .onboarding-step-line::after {
            transform-origin: right;
        }
        .onboarding-step-line.active::after {
            transform: scaleX(1);
        }

        /* Directional Carousel Panes for Slide Content */
        .onboarding-track {
            position: relative;
            width: 100%;
            min-height: 125px;
            display: grid;
            grid-template-columns: 100%;
            align-items: center;
            overflow: hidden;
        }
        .onboarding-overlay.active .onboarding-track {
            animation: obElementEntrance 0.42s cubic-bezier(0.16, 1, 0.3, 1) 0.15s both;
        }
        .onboarding-slide {
            grid-column: 1 / 2;
            grid-row: 1 / 2;
            width: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: opacity 0.28s cubic-bezier(0.16, 1, 0.3, 1),
                        transform 0.32s cubic-bezier(0.16, 1, 0.3, 1),
                        visibility 0s linear 0.32s;
            will-change: transform, opacity;
            box-sizing: border-box;
        }
        .onboarding-slide.slide-prev {
            transform: translate3d(-30px, 0, 0);
        }
        .onboarding-slide.slide-next {
            transform: translate3d(30px, 0, 0);
        }
        html[lang="ar"] .onboarding-slide.slide-prev,
        [dir="rtl"] .onboarding-slide.slide-prev {
            transform: translate3d(30px, 0, 0);
        }
        html[lang="ar"] .onboarding-slide.slide-next,
        [dir="rtl"] .onboarding-slide.slide-next {
            transform: translate3d(-30px, 0, 0);
        }
        .onboarding-slide.active {
            opacity: 1;
            /* inherit (never force visible/auto): when the overlay is closed
               its hidden/none state must win, otherwise this slide would sit
               invisibly on top of the main page and swallow taps. */
            visibility: inherit;
            pointer-events: inherit;
            transform: translate3d(0, 0, 0) !important;
            transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1),
                        transform 0.34s cubic-bezier(0.16, 1, 0.3, 1),
                        visibility 0s linear 0s;
        }

        .onboarding-title {
            font-size: 17px;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 8px;
            line-height: 1.35;
        }
        .onboarding-desc {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.6;
            margin-bottom: 16px;
            max-width: 320px;
        }

        .onboarding-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            width: 100%;
            transition: gap 0.28s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .onboarding-overlay.active .onboarding-actions {
            animation: obElementEntrance 0.44s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both;
        }
        @keyframes obElementEntrance {
            0% {
                opacity: 0;
                transform: translate3d(0, 16px, 0);
            }
            100% {
                opacity: 1;
                transform: translate3d(0, 0, 0);
            }
        }

        .btn-ob-skip {
            flex: 1;
            min-height: 46px;
            height: auto;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-btn);
            color: var(--text-muted);
            font-family: inherit;
            font-size: 13px;
            font-weight: 600;
            cursor: pointer;
            padding: 10px 14px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .btn-ob-skip:hover {
            color: #ffffff;
            border-color: rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.04);
        }
        .btn-ob-skip:active {
            transform: scale(0.97);
        }
        .btn-ob-next {
            flex: 2;
            min-height: 46px;
            height: auto;
            background: var(--primary-gradient);
            border: 1px solid rgba(139, 92, 246, 0.4);
            border-radius: var(--radius-btn);
            color: #ffffff;
            font-family: inherit;
            font-size: 13.5px;
            font-weight: 800;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 18px;
            white-space: nowrap;
            box-shadow: 0 4px 18px rgba(124, 58, 237, 0.4);
            transition: transform 0.16s ease,
                        box-shadow 0.2s ease,
                        flex 0.3s cubic-bezier(0.16, 1, 0.3, 1),
                        width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .btn-ob-next:active {
            transform: scale(0.97);
            box-shadow: 0 2px 8px rgba(124, 58, 237, 0.3);
        }
        .onboarding-actions.is-last-step .btn-ob-skip {
            display: none !important;
        }
        .onboarding-actions.is-last-step .btn-ob-next {
            flex: 1 !important;
            width: 100% !important;
        }
        .ob-next-arrow {
            width: 16px;
            height: 16px;
            fill: #ffffff;
            transition: transform 0.24s cubic-bezier(0.16, 1, 0.3, 1);
        }
        html[lang="ar"] .ob-next-arrow {
            transform: rotate(180deg);
        }
        .ob-next-arrow {
            width: 16px;
            height: 16px;
            fill: #ffffff;
            transition: transform 0.2s ease;
        }
        html[lang="ar"] .ob-next-arrow {
            transform: rotate(180deg);
        }