* { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background-color: var(--bg) !important;
            background-image: var(--pattern) !important;
            color: var(--text) !important;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            line-height: 1.5;
        }

        header.top-bar {
            position: fixed; top: 0; left: 0; right: 0; height: var(--header-height);
            background: var(--top, var(--surface)) !important; border-bottom: 1px solid var(--border) !important;
            display: flex; align-items: center; justify-content: space-between; padding: 0 16px; z-index: 1000;
        }
        .bar-left, .bar-right { display: flex; align-items: center; gap: 10px; }

        .brand-logo { font-size: 22px; font-weight: 800; color: var(--accent) !important; text-decoration: none; display: flex; align-items: center; gap: 6px; }
        .brand-logo span { color: var(--text) !important; }

        .btn-burger {
            background: transparent; border: none; cursor: pointer; width: 40px; height: 40px;
            display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 5px; border-radius: 8px;
            flex-shrink: 0; -webkit-tap-highlight-color: transparent;
        }
        .btn-burger:hover { background: var(--surface2) !important; }
        .btn-burger span { display: block; width: 22px; height: 2px; background: var(--text) !important; border-radius: 2px; pointer-events: none; }

        .pair-badge {
            background: var(--surface2) !important; color: var(--text) !important; padding: 6px 12px; border-radius: 20px;
            font-size: 14px; font-weight: 600; text-decoration: none; border: 1px solid var(--border) !important;
            display: flex; align-items: center; gap: 6px; cursor: pointer; flex-shrink: 0;
        }

        .select-lang, .select-theme, .select-pair {
            background: var(--surface2) !important; color: var(--text) !important;
            border: 1px solid var(--border) !important; padding: 7px 10px; border-radius: 8px; font-size: 13px; cursor: pointer;
        }

        main.page-container {
            flex: 1; max-width: 960px; width: 100%;
            margin: 0 auto;
            padding-top: calc(var(--header-height) + 20px) !important;
            padding-bottom: calc(var(--footer-height) + 32px) !important;
            padding-left: 16px;
            padding-right: 16px;
        }

        .breadcrumbs-bar {
            display: flex; align-items: center; gap: 8px;
            font-size: 14px; font-weight: 600; margin-bottom: 16px; color: var(--muted) !important; padding: 0 4px;
        }
        .breadcrumbs-bar a { color: var(--accent) !important; text-decoration: none; }
        .breadcrumbs-bar a:hover { text-decoration: underline; }
        .breadcrumbs-bar .sep { opacity: 0.6; }
        .breadcrumbs-bar .current { color: var(--text) !important; overflow-wrap: anywhere; min-width: 0; } /* INSTALL-233 */
        .breadcrumbs-bar { flex-wrap: wrap; } /* INSTALL-233 */

        .hero-card, .trepte-header-card, .vocab-header-card, .treapta-card, .compact-word-card, .menu-block-card {
            background: var(--surface) !important; border: 1px solid var(--border) !important;
            border-radius: 16px; padding: 22px; margin-bottom: 20px; box-shadow: 0 4px 14px rgba(0,0,0,0.05);
        }
        .hero-title, .trepte-title, .vocab-title { font-size: 26px; font-weight: 800; color: var(--text) !important; margin-bottom: 6px; }
        .hero-desc, .trepte-desc, .vocab-subtitle { font-size: 14px; color: var(--muted) !important; line-height: 1.6; margin-bottom: 16px; }

        .pair-selector-strip {
            display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px;
            background: var(--surface2) !important; padding: 10px 16px; border-radius: 12px; border: 1px solid var(--border) !important;
            margin-bottom: 16px;
        }
        .pair-label { font-size: 13px; font-weight: 700; color: var(--text) !important; display: flex; align-items: center; gap: 6px; }
        .pair-dropdowns { display: flex; align-items: center; gap: 6px; }

        .grid-nav-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; margin-top: 20px; }
        .nav-card-item {
            background: var(--surface) !important; border: 1px solid var(--border) !important; border-radius: 14px;
            padding: 18px; text-decoration: none; display: flex; flex-direction: column; gap: 8px; transition: all 0.2s;
        }
        .nav-card-item:hover { border-color: var(--accent) !important; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.08); }
        .nav-card-icon { font-size: 32px; }
        .nav-card-title { font-size: 17px; font-weight: 800; color: var(--text) !important; }
        .nav-card-desc { font-size: 13px; color: var(--muted) !important; }

        .trepte-list, .words-compact-list { display: flex; flex-direction: column; gap: 14px; margin-bottom: 40px; }

        .treapta-top { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
        .treapta-title-wrap { display: flex; align-items: center; gap: 12px; }
        .treapta-badge-num {
            width: 40px; height: 40px; border-radius: 10px; background: var(--accent) !important; color: var(--accentText, #fff) !important;
            display: flex; align-items: center; justify-content: center; font-size: 17px; font-weight: 800;
        }
        .treapta-name { font-size: 17px; font-weight: 800; color: var(--text) !important; }
        .treapta-cefr {
            display: inline-block; background: var(--surface2) !important; color: var(--muted) !important;
            border: 1px solid var(--border) !important; padding: 2px 7px; border-radius: 6px; font-size: 11px; font-weight: 700;
        }

        .treapta-metrics {
            display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px;
            background: var(--surface2) !important; padding: 10px 14px; border-radius: 10px;
        }
        .metric-item { display: flex; flex-direction: column; gap: 2px; }
        .metric-label { font-size: 11px; color: var(--muted) !important; text-transform: uppercase; font-weight: 700; }
        .metric-val { font-size: 14px; color: var(--text) !important; font-weight: 800; }
        .metric-target { font-size: 11px; color: var(--muted) !important; font-weight: 500; }

        .btn-action-primary {
            background: var(--accent) !important; color: var(--accentText, #fff) !important;
            text-decoration: none; padding: 9px 18px; border-radius: 8px; font-size: 13px; font-weight: 700;
            display: inline-block; transition: all 0.2s;
        }
        .btn-action-primary:hover { opacity: 0.92; }

        .filter-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
        .filter-btn {
            background: var(--surface2) !important; color: var(--text) !important; border: 1px solid var(--border) !important;
            padding: 8px 16px; border-radius: 20px; font-size: 13px; font-weight: 700; cursor: pointer;
            transition: all 0.2s;
        }
        .filter-btn.active, .filter-btn:hover { background: var(--accent) !important; color: var(--accentText, #fff) !important; border-color: var(--accent) !important; }

        .categories-accordion { border: 1px solid var(--border) !important; border-radius: 12px; overflow: hidden; background: var(--surface) !important; margin-bottom: 16px; }
        .cat-accordion-btn {
            width: 100%; display: flex; align-items: center; justify-content: space-between;
            padding: 12px 16px; background: var(--surface2) !important; border: none; cursor: pointer;
            font-size: 14px; font-weight: 700; color: var(--text) !important;
        }
        .cat-accordion-body { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; padding: 0 14px; }
        .categories-accordion.open .cat-accordion-body { max-height: 500px; padding: 14px; }
        .categories-accordion.open .cat-arrow { transform: rotate(180deg); }
        .cat-arrow { font-size: 11px; transition: transform 0.2s; }

        .cat-pills-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; }
        .cat-pill {
            background: var(--surface) !important; border: 1px solid var(--border) !important; border-radius: 8px;
            padding: 8px 12px; font-size: 12px; font-weight: 600; color: var(--text) !important; text-align: left;
            cursor: pointer; transition: all 0.2s;
        }
        .cat-pill:hover, .cat-pill.active { background: var(--accent) !important; color: var(--accentText, #fff) !important; border-color: var(--accent) !important; }

        .compact-word-card {
            padding: 12px 16px; margin-bottom: 8px; display: flex; flex-direction: column; gap: 5px;
        }
        .word-main-row { display: flex; justify-content: space-between; align-items: center; }
        .word-target { font-size: 16px; font-weight: 800; color: var(--text) !important; }
        .word-base { font-size: 14px; font-weight: 600; color: var(--muted) !important; }
        .word-pos-tag {
            font-size: 10px; font-weight: 700; text-transform: uppercase; background: var(--surface2) !important;
            color: var(--muted) !important; padding: 2px 6px; border-radius: 4px; border: 1px solid var(--border) !important;
        }
        .word-example-box {
            background: var(--surface2) !important; border-radius: 6px; padding: 6px 10px; font-size: 12px;
            display: flex; flex-direction: column; gap: 2px; margin-top: 2px;
        }
        .ex-t { color: var(--text) !important; font-weight: 600; }
        .ex-b { color: var(--muted) !important; }

        .drawer-overlay {
            position: fixed; top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(0,0,0,0.65); opacity: 0; pointer-events: none;
            transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1); z-index: 99998;
            backdrop-filter: blur(2px); -webkit-backdrop-filter: blur(2px);
        }
        .drawer-overlay.active { opacity: 1; pointer-events: auto; }

        .drawer-menu {
            position: fixed; top: 0; bottom: 0; left: -320px; width: 300px; max-width: 85vw;
            background: var(--menu, var(--surface)) !important; border-right: 1px solid var(--border) !important;
            box-shadow: 4px 0 30px rgba(0,0,0,0.4); transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 99999; display: flex; flex-direction: column;
        }
        .drawer-menu.active { left: 0 !important; }

        .drawer-header { padding: 18px 16px; border-bottom: 1px solid var(--border) !important; background: var(--surface2) !important; }
        .user-name-line { font-size: 15px; font-weight: 700; color: var(--text) !important; margin-bottom: 2px; }
        .user-email-line { font-size: 12px; color: var(--muted) !important; word-break: break-all; margin-bottom: 6px; }
        .user-plan-badge { display: inline-block; background: var(--surface) !important; color: var(--accent) !important; border: 1px solid var(--border) !important; padding: 2px 8px; border-radius: 9999px; font-size: 11px; font-weight: 700; }

        .drawer-accordion { flex: 1; overflow-y: auto; padding: 10px 8px; }
        .accordion-group { margin-bottom: 8px; border: 1px solid var(--border) !important; border-radius: 10px; overflow: hidden; background: var(--surface) !important; }
        .accordion-btn {
            width: 100%; display: flex; align-items: center; justify-content: space-between;
            padding: 10px 14px; background: var(--surface2) !important; border: none; cursor: pointer;
            font-size: 13px; font-weight: 700; color: var(--text) !important; transition: background 0.2s;
        }
        .accordion-arrow { font-size: 11px; transition: transform 0.2s ease; }
        .accordion-group.open .accordion-arrow { transform: rotate(180deg); }

        .accordion-body { max-height: 0; overflow: hidden; transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1); }
        .accordion-group.open .accordion-body { max-height: 400px; }

        .accordion-link {
            display: flex; align-items: center; justify-content: space-between;
            padding: 9px 16px; color: var(--text) !important; text-decoration: none; font-size: 13px; font-weight: 500;
            border-bottom: 1px solid var(--border) !important;
        }
        .accordion-link:last-child { border-bottom: none !important; }
        .accordion-link:hover { background: var(--surface2) !important; color: var(--accent) !important; }
        .accordion-link-left { display: flex; align-items: center; gap: 10px; }

        .drawer-footer { padding: 14px 16px; border-top: 1px solid var(--border) !important; }
        .btn-logout { display: block; width: 100%; padding: 10px; text-align: center; background: #ef4444; color: #ffffff; text-decoration: none; border-radius: 8px; font-weight: 700; font-size: 13px; }

        footer.bottom-bar {
            position: fixed; bottom: 0; left: 0; right: 0; height: var(--footer-height);
            background: var(--surface) !important; border-top: 1px solid var(--border) !important;
            display: flex; align-items: center; justify-content: center; padding: 0 16px; z-index: 90;
        }
        .footer-nav { display: flex; gap: 16px; list-style: none; }
        .footer-nav a { color: var(--muted) !important; text-decoration: none; font-size: 12px; }
        .footer-nav a:hover { color: var(--text) !important; }
    
        /* USER LOGGED / GUEST CARDS IN DRAWER */
        .user-logged-card { background: var(--surface) !important; border: 1px solid var(--border) !important; border-radius: 12px; padding: 12px 14px; }
        .user-avatar-row { display: flex; align-items: center; gap: 12px; }
        .user-avatar-circle { width: 38px; height: 38px; border-radius: 50%; background: var(--accent) !important; color: #ffffff !important; display: flex; align-items: center; justify-content: center; font-size: 16px; font-weight: 800; flex-shrink: 0; }
        .user-name-line { font-size: 15px; font-weight: 700; color: var(--text) !important; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
        .user-email-display { font-size: 11px; color: var(--muted) !important; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-top: 2px; }
        .user-plan-badge { background: var(--surface2) !important; color: var(--accent) !important; padding: 2px 8px; border-radius: 9999px; font-size: 11px; font-weight: 700; border: 1px solid var(--border) !important; }
        .session-timer-pill { background: rgba(245, 158, 11, 0.15); color: #f59e0b !important; border: 1px solid rgba(245, 158, 11, 0.4); padding: 2px 8px; border-radius: 9999px; font-size: 10px; font-weight: 700; }

        .user-guest-card { background: var(--surface) !important; border: 1px solid var(--border) !important; border-radius: 12px; padding: 14px; display: flex; flex-direction: column; gap: 8px; }
        .guest-badge-pill { align-self: flex-start; background: rgba(56, 189, 248, 0.15); color: var(--accent) !important; border: 1px solid var(--accent); padding: 2px 8px; border-radius: 9999px; font-size: 10px; font-weight: 700; text-transform: uppercase; }
        .guest-title { font-size: 14px; font-weight: 700; color: var(--text) !important; }
        .guest-subtitle { font-size: 12px; color: var(--muted) !important; line-height: 1.4; }
        .btn-google-auth-drawer { display: flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 12px; background: #ffffff !important; color: #1f2937 !important; border: 1px solid #d1d5db; border-radius: 8px; font-size: 13px; font-weight: 700; text-decoration: none; cursor: pointer; margin-top: 4px; box-shadow: 0 2px 6px rgba(0,0,0,0.1); }
        .btn-google-auth-drawer:hover { background: #f9fafb !important; }

        /* AUTH GATE (PANOUL CENTRAL DE CONECTARE / ÎNREGISTRARE) */
        .auth-gate-wrapper {
            display: flex; flex-direction: column; align-items: center; justify-content: center;
            min-height: calc(100vh - var(--header-height) - var(--footer-height) - 40px);
            padding: 24px 16px; width: 100%;
        }
        .auth-gate-card {
            background: var(--surface) !important; border: 1px solid var(--border) !important;
            border-radius: 20px; box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
            max-width: 480px; width: 100%; padding: 32px 24px; text-align: center;
            display: flex; flex-direction: column; align-items: center; gap: 16px;
        }
        .auth-gate-badge {
            display: inline-flex; align-items: center; gap: 6px;
            background: rgba(56, 189, 248, 0.15); color: var(--accent) !important; border: 1px solid var(--accent);
            padding: 4px 14px; border-radius: 9999px; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px;
        }
        .auth-gate-title { font-size: 26px; font-weight: 800; color: var(--text) !important; margin-top: -4px; }
        .auth-gate-desc { font-size: 14px; color: var(--muted) !important; line-height: 1.6; margin-top: -6px; }
        .auth-gate-desc strong { color: var(--text) !important; }
        .auth-features-list { display: flex; flex-direction: column; gap: 10px; width: 100%; text-align: left; margin: 6px 0; }
        .auth-feature-item {
            display: flex; align-items: center; gap: 12px; background: var(--surface2) !important;
            border: 1px solid var(--border) !important; border-radius: 12px; padding: 12px 14px;
            font-size: 13px; font-weight: 600; color: var(--text) !important;
        }
        .af-icon { font-size: 18px; line-height: 1; flex-shrink: 0; }
        .btn-google-primary {
            display: flex; align-items: center; justify-content: center; gap: 12px; width: 100%;
            padding: 14px 20px; background: #ffffff !important; color: #1f2937 !important; border: 1px solid #d1d5db;
            border-radius: 12px; font-size: 15px; font-weight: 700; text-decoration: none; cursor: pointer;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15); transition: transform 0.15s ease, box-shadow 0.15s ease;
        }
        .btn-google-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 16px rgba(0, 0, 0, 0.22); background: #f9fafb !important; }
        .btn-google-primary:active { transform: translateY(1px); }
        .auth-security-notice { font-size: 11px; color: var(--muted) !important; line-height: 1.4; margin-top: 4px; }
        .auth-alert { width: 100%; padding: 12px 16px; border-radius: 10px; font-size: 13px; font-weight: 600; text-align: left; }
        .auth-alert.error { background: rgba(239, 68, 68, 0.15); border: 1px solid #ef4444; color: #ef4444; }
        .auth-alert.warning { background: rgba(245, 158, 11, 0.15); border: 1px solid #f59e0b; color: #f59e0b; }
        .auth-alert.success { background: rgba(16, 185, 129, 0.15); border: 1px solid #10b981; color: #10b981; }

        @media (max-width: 600px) {
            header.top-bar { padding: 0 10px; }
            .bar-left { gap: 6px; }
            .bar-right { gap: 6px; }
            .brand-logo { font-size: 19px; }
            .pair-badge { padding: 4px 8px; font-size: 13px; }
            .select-theme { max-width: 110px; font-size: 11px; padding: 6px 6px; text-overflow: ellipsis; }
            .select-lang { max-width: 100px; font-size: 11px; padding: 6px 6px; text-overflow: ellipsis; }
        }
    
        
        /* EXERCISE MODE TABS & MATCH CARDS STYLES */
        .exercise-mode-tabs { display: flex; gap: 10px; margin-bottom: 22px; justify-content: center; flex-wrap: wrap; }
        .exercise-tab-btn { padding: 9px 20px; border-radius: 9999px; font-size: 13px; font-weight: 700; text-decoration: none; border: 1px solid var(--border) !important; background: var(--surface) !important; color: var(--muted) !important; transition: all 0.2s ease; display: inline-flex; align-items: center; gap: 8px; }
        .exercise-tab-btn:hover { border-color: var(--accent) !important; color: var(--text) !important; }
        .exercise-tab-btn.active { background: var(--accent) !important; color: #ffffff !important; border-color: var(--accent) !important; box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3); }

        .match-two-columns {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
            margin-top: 16px;
        }
        @media (max-width: 480px) {
            .match-two-columns {
                gap: 10px;
            }
        }
        .match-column {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .match-column-header {
            background: var(--surface2) !important;
            border: 1px solid var(--border) !important;
            border-radius: 12px;
            padding: 8px 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 800;
            font-size: 13px;
            color: var(--text) !important;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .match-column-flag {
            font-size: 18px;
        }
        .match-cards-stack {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .match-card {
            background: var(--surface2) !important;
            color: var(--text) !important;
            border: 2px solid var(--border) !important;
            border-radius: 14px;
            padding: 16px 10px;
            min-height: 64px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            user-select: none;
            transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            outline: none;
            position: relative;
            word-break: break-word;
        }
        .match-card:hover {
            transform: translateY(-2px);
            border-color: var(--accent) !important;
        }
        .match-card.selected {
            border-color: var(--accent) !important;
            background: rgba(16, 185, 129, 0.15) !important;
            transform: scale(1.03);
            box-shadow: 0 0 16px rgba(16, 185, 129, 0.35);
        }
        .match-card.matched {
            background: #059669 !important;
            color: #ffffff !important;
            border-color: #10b981 !important;
            opacity: 0.45;
            pointer-events: none;
            transform: scale(0.97);
        }
        .match-card.wrong {
            background: #dc2626 !important;
            color: #ffffff !important;
            border-color: #ef4444 !important;
            animation: matchShake 0.45s ease-in-out;
        }
        @keyframes matchShake {
            0%, 100% { transform: translateX(0); }
            20%, 60% { transform: translateX(-6px); }
            40%, 80% { transform: translateX(6px); }
        }
            20%, 60% { transform: translateX(-6px); }
            40%, 80% { transform: translateX(6px); }
        }

        
        /* SPRINT VOCABULAR STYLES */
        .sprint-container { max-width: 540px; margin: 0 auto; width: 100%; position: relative; }
        .sprint-top-hud { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; background: var(--surface2) !important; border: 1px solid var(--border) !important; padding: 12px 18px; border-radius: 16px; }
        .sprint-hud-item { display: flex; flex-direction: column; align-items: center; }
        .sprint-hud-val { font-size: 22px; font-weight: 800; color: var(--accent); }
        .sprint-hud-lbl { font-size: 11px; color: var(--muted); text-transform: uppercase; font-weight: 700; margin-top: 2px; }
        .sprint-timer-val { color: #f59e0b !important; }
        .sprint-timer-val.urgent { color: #ef4444 !important; animation: pulseUrgent 0.6s infinite alternate; }
        @keyframes pulseUrgent { from { transform: scale(1); } to { transform: scale(1.15); } }

        .sprint-card { background: var(--surface) !important; border: 2px solid var(--border) !important; border-radius: 20px; padding: 36px 20px; text-align: center; box-shadow: 0 12px 36px rgba(0,0,0,0.3); transition: border-color 0.2s, background 0.2s; position: relative; }
        .sprint-card.flash-green { border-color: #10b981 !important; background: rgba(16, 185, 129, 0.12) !important; }
        .sprint-card.flash-red { border-color: #ef4444 !important; background: rgba(239, 68, 68, 0.12) !important; }

        .sprint-word-main { font-size: 34px; font-weight: 800; color: var(--text) !important; margin: 8px 0 4px 0; }
        .sprint-equal-sign { font-size: 20px; color: var(--muted) !important; margin: 4px 0; font-weight: 700; }
        .sprint-word-trans { font-size: 26px; font-weight: 700; color: var(--accent) !important; margin-bottom: 24px; }

        .sprint-btn-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 20px; }
        .sprint-btn-false { background: #dc2626 !important; color: #ffffff !important; border: none; border-radius: 14px; padding: 16px 20px; font-size: 18px; font-weight: 800; cursor: pointer; transition: transform 0.1s ease, filter 0.2s ease; box-shadow: 0 6px 20px rgba(220, 38, 38, 0.3); outline: none; }
        .sprint-btn-false:hover { filter: brightness(1.1); transform: translateY(-2px); }
        .sprint-btn-false:active { transform: translateY(1px); }

        .sprint-btn-true { background: #059669 !important; color: #ffffff !important; border: none; border-radius: 14px; padding: 16px 20px; font-size: 18px; font-weight: 800; cursor: pointer; transition: transform 0.1s ease, filter 0.2s ease; box-shadow: 0 6px 20px rgba(5, 150, 105, 0.3); outline: none; }
        .sprint-btn-true:hover { filter: brightness(1.1); transform: translateY(-2px); }
        .sprint-btn-true:active { transform: translateY(1px); }

        /* QUIZ & EXERCISE ENGINE STYLES */
        .quiz-container { max-width: 600px; margin: 0 auto; width: 100%; }
        .quiz-header-status { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; flex-wrap: wrap; gap: 10px; }
        .badge-energy { background: rgba(245, 158, 11, 0.15); color: #f59e0b !important; border: 1px solid rgba(245, 158, 11, 0.4); padding: 5px 12px; border-radius: 9999px; font-size: 12px; font-weight: 700; display: inline-flex; align-items: center; gap: 6px; }
        .badge-unlimited { background: rgba(16, 185, 129, 0.15); color: #10b981 !important; border: 1px solid rgba(16, 185, 129, 0.4); padding: 5px 12px; border-radius: 9999px; font-size: 12px; font-weight: 700; display: inline-flex; align-items: center; gap: 6px; }
        .quiz-progress-track { height: 8px; background: var(--surface2) !important; border-radius: 9999px; overflow: hidden; margin-bottom: 20px; border: 1px solid var(--border); }
        .quiz-progress-fill { height: 100%; width: 10%; background: var(--accent) !important; transition: width 0.3s ease; }
        .quiz-card { background: var(--surface) !important; border: 1px solid var(--border) !important; border-radius: 20px; padding: 24px 20px; box-shadow: 0 10px 30px rgba(0,0,0,0.25); text-align: center; }
        .quiz-word-target { font-size: 32px; font-weight: 800; color: var(--text) !important; margin: 12px 0 6px 0; }
        .quiz-prompt { font-size: 14px; color: var(--muted) !important; margin-bottom: 20px; }
        .quiz-options-grid { display: grid; grid-template-columns: 1fr; gap: 10px; margin-top: 16px; }
        @media(min-width: 500px) { .quiz-options-grid { grid-template-columns: 1fr 1fr; } }
        .quiz-option-btn { background: var(--surface2) !important; color: var(--text) !important; border: 1px solid var(--border) !important; border-radius: 12px; padding: 14px 16px; font-size: 16px; font-weight: 600; cursor: pointer; text-align: center; transition: all 0.2s ease; outline: none; }
        .quiz-option-btn:hover { border-color: var(--accent) !important; transform: translateY(-1px); }
        .quiz-option-btn.correct { background: #059669 !important; color: #ffffff !important; border-color: #10b981 !important; transform: scale(1.02); }
        .quiz-option-btn.wrong { background: #dc2626 !important; color: #ffffff !important; border-color: #ef4444 !important; opacity: 0.85; }
        .quiz-option-btn:disabled { cursor: default; }
        .quiz-feedback-box { margin-top: 20px; min-height: 50px; display: flex; align-items: center; justify-content: space-between; }
        .quiz-next-btn { background: var(--accent) !important; color: #ffffff !important; border: none; border-radius: 10px; padding: 12px 24px; font-size: 15px; font-weight: 700; cursor: pointer; }
        .quiz-next-btn:hover { opacity: 0.9; }

        /* MODAL / CARD DE UPGRADE LA LIMITĂ */
        .limit-reached-card { background: var(--surface) !important; border: 1px solid var(--border) !important; border-radius: 20px; padding: 32px 24px; text-align: center; box-shadow: 0 15px 40px rgba(0,0,0,0.3); max-width: 500px; margin: 0 auto; }
        .limit-icon { font-size: 48px; margin-bottom: 12px; }
        .limit-title { font-size: 22px; font-weight: 800; color: var(--text) !important; margin-bottom: 8px; }
        .limit-desc { font-size: 14px; color: var(--muted) !important; line-height: 1.6; margin-bottom: 24px; }
        .limit-actions-col { display: flex; flex-direction: column; gap: 12px; }
        .btn-unlock-pair { background: var(--accent) !important; color: #ffffff !important; padding: 12px 20px; border-radius: 10px; font-size: 14px; font-weight: 700; text-decoration: none; display: flex; align-items: center; justify-content: center; gap: 8px; }
        .btn-full-premium { background: #f59e0b !important; color: #1f2937 !important; padding: 12px 20px; border-radius: 10px; font-size: 14px; font-weight: 800; text-decoration: none; display: flex; align-items: center; justify-content: center; gap: 8px; }
        .btn-watch-ad { background: var(--surface2) !important; color: var(--text) !important; border: 1px solid var(--border) !important; padding: 12px 20px; border-radius: 10px; font-size: 14px; font-weight: 600; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 8px; }

    

        /* MODAL INFO REGULI JOCURI - FULL SCREEN OVERLAY */
        .btn-exercise-info {
            background: var(--surface2) !important;
            color: var(--text) !important;
            border: 1px solid var(--border) !important;
            padding: 5px 12px;
            border-radius: 9999px;
            font-size: 12px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            cursor: pointer;
            transition: all 0.2s ease;
            outline: none;
            text-decoration: none;
            user-select: none;
        }
        .btn-exercise-info:hover {
            border-color: var(--accent) !important;
            color: var(--accent) !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(0,0,0,0.12);
        }
        .exercise-info-overlay {
            position: fixed !important;
            top: 0 !important;
            left: 0 !important;
            right: 0 !important;
            bottom: 0 !important;
            width: 100vw !important;
            height: 100vh !important;
            background: rgba(15, 23, 42, 0.75) !important;
            backdrop-filter: blur(8px) !important;
            -webkit-backdrop-filter: blur(8px) !important;
            z-index: 999999 !important;
            display: none;
            align-items: center !important;
            justify-content: center !important;
            padding: 16px !important;
            box-sizing: border-box !important;
            animation: fadeInModalInfo 0.2s ease-out;
        }
        @keyframes fadeInModalInfo {
            from { opacity: 0; }
            to { opacity: 1; }
        }
        .exercise-info-card {
            background: var(--surface, #ffffff) !important;
            color: var(--text, #0f172a) !important;
            border: 1px solid var(--border, rgba(0,0,0,0.12)) !important;
            border-radius: 24px !important;
            max-width: 520px !important;
            width: 100% !important;
            box-shadow: 0 25px 60px rgba(0, 0, 0, 0.45) !important;
            overflow: hidden !important;
            display: flex !important;
            flex-direction: column !important;
            position: relative !important;
            animation: popUpModalInfo 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        }
        @keyframes popUpModalInfo {
            from { transform: scale(0.92) translateY(20px); opacity: 0; }
            to { transform: scale(1) translateY(0); opacity: 1; }
        }
        .exercise-info-header {
            display: flex !important;
            align-items: center !important;
            justify-content: space-between !important;
            padding: 18px 22px !important;
            border-bottom: 1px solid var(--border, #e2e8f0) !important;
            background: var(--surface2, #f8fafc) !important;
        }
        .exercise-info-icon { font-size: 26px !important; line-height: 1; }
        .exercise-info-title { font-size: 18px !important; font-weight: 800 !important; color: var(--text, #0f172a) !important; margin: 0 !important; }
        .exercise-info-close-btn {
            background: rgba(0,0,0,0.06) !important;
            border: none !important;
            color: var(--muted, #64748b) !important;
            font-size: 18px !important;
            font-weight: 700 !important;
            cursor: pointer !important;
            width: 36px !important;
            height: 36px !important;
            border-radius: 50% !important;
            display: flex !important;
            align-items: center !important;
            justify-content: center !important;
            transition: all 0.2s ease !important;
        }
        .exercise-info-close-btn:hover {
            background: #ef4444 !important;
            color: #ffffff !important;
            transform: scale(1.08) rotate(90deg);
        }
        .exercise-info-body {
            padding: 22px 24px !important;
            display: flex !important;
            flex-direction: column !important;
            gap: 12px !important;
            max-height: 65vh !important;
            overflow-y: auto !important;
            text-align: left !important;
        }
        .info-rule-box {
            display: flex !important;
            align-items: flex-start !important;
            gap: 14px !important;
            background: var(--surface2, #f8fafc) !important;
            border: 1px solid var(--border, #e2e8f0) !important;
            border-radius: 16px !important;
            padding: 14px 16px !important;
        }
        .info-rule-icon { font-size: 22px !important; flex-shrink: 0 !important; line-height: 1.2 !important; margin-top: 2px !important; }
        .info-rule-content { flex: 1 !important; }
        .info-rule-heading { font-size: 14.5px !important; font-weight: 800 !important; color: var(--text, #0f172a) !important; margin-bottom: 3px !important; }
        .info-rule-desc { font-size: 13px !important; color: var(--muted, #64748b) !important; line-height: 1.45 !important; }
        .exercise-info-footer {
            padding: 16px 22px !important;
            border-top: 1px solid var(--border, #e2e8f0) !important;
            background: var(--surface2, #f8fafc) !important;
        }

    

                    @keyframes duelPulse {
                        0% { transform: scale(0.95); opacity: 0.8; }
                        50% { transform: scale(1.08); opacity: 1; }
                        100% { transform: scale(0.95); opacity: 0.8; }
                    }
                    .duel-opt-btn {
                        background: var(--surface2);
                        border: 1.5px solid var(--border);
                        border-radius: 12px;
                        padding: 14px 12px;
                        font-size: 14.5px;
                        font-weight: 700;
                        color: var(--text);
                        cursor: pointer;
                        transition: all 0.15s ease;
                        text-align: center;
                    }
                    .duel-opt-btn:hover {
                        border-color: var(--accent);
                        transform: translateY(-2px);
                    }
                    .duel-opt-btn.correct {
                        background: #10b981 !important;
                        color: #ffffff !important;
                        border-color: #10b981 !important;
                    }
                    .duel-opt-btn.wrong {
                        background: #ef4444 !important;
                        color: #ffffff !important;
                        border-color: #ef4444 !important;
                    }
                

                @media print {
                    body * { visibility: hidden; }
                    #printable-diploma-wrapper, #printable-diploma-wrapper * { visibility: visible; }
                    #printable-diploma-wrapper {
                        position: absolute; left: 0; top: 0; width: 100%; margin: 0; padding: 0;
                    }
                    .diploma-frame {
                        box-shadow: none !important; border: 4px double #d97706 !important;
                        max-width: 100% !important;
                    }
                    button, .btn-action-primary, .breadcrumbs-bar, .bottom-bar, .topbar { display: none !important; }
                }