/* ============================================================================
   default-soft-futur.css
   Soft Futuristic Minimalism — buồng luyện hằng ngày
   Lấy cảm hứng Gemini Pro greeting + nhận diện Luyện AI (lá mạ, đen mềm)
   ----------------------------------------------------------------------------
   Triết lý:
     - tôn trọng editorial typography sẵn có (Fraunces italic + ruler eyebrows)
     - chỉ THÊM atmosphere: aurora gradient nền, hero greeting, glass surfaces
     - tone trắng — sáng — elegant; chỉ một accent lá mạ + xanh trời rất nhạt
     - không fight với .tp-steps--no-rail (đã đẹp), chỉ phủ canvas mới
   File load SAU admin-default.css.
   ============================================================================ */

/* ===== 1. Fonts ========================================================== */
@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@300;400;500;600;700&display=swap');

/* ===== 2. Tokens ========================================================= */
:root {
    --sft-ink:          #0F1419;
    --sft-ink-soft:     rgba(15, 20, 25, 0.78);
    --sft-ink-muted:    rgba(15, 20, 25, 0.56);
    --sft-ink-faint:    rgba(15, 20, 25, 0.32);
    --sft-ink-hair:     rgba(15, 20, 25, 0.06);

    --sft-canvas-1:     #FFFFFF;
    --sft-canvas-2:     #FBFDF9;
    --sft-canvas-3:     #F2F8FF;
    --sft-mist:         rgba(221, 242, 255, 0.55);

    --sft-lime:         #9ACD32;
    --sft-lime-deep:    #6B9D1F;
    --sft-lime-soft:    rgba(154, 205, 50, 0.14);
    --sft-lime-glow:    rgba(154, 205, 50, 0.38);

    --sft-sky:          #4FA8FF;
    --sft-sky-soft:     rgba(79, 168, 255, 0.10);
    --sft-warm:         #F0B27A;
    --sft-warm-soft:    rgba(240, 178, 122, 0.16);

    --sft-glass:        rgba(255, 255, 255, 0.72);
    --sft-glass-hi:     rgba(255, 255, 255, 0.88);
    --sft-glass-border: rgba(255, 255, 255, 0.85);

    --sft-shadow-rest:  0 1px 0 rgba(255,255,255,0.9) inset,
                        0 1px 2px rgba(15,20,25,0.03),
                        0 12px 32px rgba(15,20,25,0.05);
    --sft-shadow-lift:  0 1px 0 rgba(255,255,255,0.95) inset,
                        0 4px 12px rgba(15,20,25,0.05),
                        0 28px 70px rgba(15,20,25,0.09);
    --sft-shadow-chip:  0 1px 0 rgba(255,255,255,0.9) inset,
                        0 8px 20px rgba(15,20,25,0.06);

    --sft-r-pill:       999px;
    --sft-r-2xl:        32px;
    --sft-r-xl:         24px;
    --sft-r-lg:         18px;

    --sft-font-display: 'Fraunces', 'Iowan Old Style', 'Palatino Linotype', Georgia, serif;
    --sft-font-body:    'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Inter', 'Segoe UI', sans-serif;
}

/* ===== 3. Body atmosphere ================================================ */
html, body { background: var(--sft-canvas-2); }

body#bodyCss {
    font-family: var(--sft-font-body);
    color: var(--sft-ink);
    background:
        radial-gradient(ellipse 80% 60% at 50% 0%,
            rgba(255,255,255,0.96) 0%, rgba(255,255,255,0) 60%),
        radial-gradient(ellipse 70% 55% at 50% 100%,
            var(--sft-mist) 0%, rgba(221,242,255,0) 65%),
        radial-gradient(ellipse 50% 40% at 12% 28%,
            var(--sft-lime-soft) 0%, transparent 60%),
        radial-gradient(ellipse 55% 45% at 88% 75%,
            rgba(79,168,255,0.08) 0%, transparent 65%),
        linear-gradient(180deg,
            var(--sft-canvas-1) 0%,
            var(--sft-canvas-2) 42%,
            var(--sft-canvas-3) 100%);
    background-attachment: fixed;
    min-height: 100vh;
}

/* Subtle grain để khử cảm giác "phẳng kỹ thuật số" */
body#bodyCss::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0.35;
    mix-blend-mode: multiply;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.06 0 0 0 0 0.08 0 0 0 0 0.10 0 0 0 0.06 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

.container1 { position: relative; z-index: 1; }

/* ===== 4. Main wrapper — remove old card, generous breathing room ======== */
.default-main-content1 {
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    padding: 28px clamp(16px, 4vw, 56px) 64px !important;
    /* 1250px đồng nhất mọi trang — khớp với override của BasicClass.ascx */
    max-width: 1250px !important;
    margin: 0 auto !important;
}

/* ===== 5. Student identity strip — compact glass pill, top-left ========= */
.student-header {
    display: block !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    padding: 0 !important;
    margin: 0 0 18px !important;
}

/* Header-left: masthead editorial — identity pill TRÁI, brand logo PHẢI */
.header-left {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    justify-content: space-between !important;
    text-align: left !important;
    width: 100% !important;
    background: transparent !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    padding: 0 !important;
    gap: 20px !important;
    flex-wrap: wrap;
    transition: transform 280ms ease;
}
.header-left:hover .header-logo {
    transform: translateY(-1px);
    box-shadow: var(--sft-shadow-chip), 0 16px 32px rgba(15,20,25,0.07);
    border-color: rgba(154, 205, 50, 0.28);
}
.header-left:hover .header-logo::before {
    opacity: 0.28;
    transform: scale(1.05);
}
.header-left:hover .header-info {
    box-shadow: var(--sft-shadow-chip), 0 16px 32px rgba(15,20,25,0.07) !important;
}

/* Brand logo card: glass squircle bo tròn, cùng family với pill identity bên trái */
.header-logo {
    position: relative;
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    order: 2;
    height: clamp(62px, 6.4vw, 78px);
    padding: 10px 18px;
    /* Nền TRẮNG đặc — logo nền trắng phải khớp, không để gradient lá mạ lọt qua */
    background: #ffffff !important;
    border: 1px solid var(--sft-glass-border);
    border-radius: 22px;
    box-shadow: var(--sft-shadow-rest);
    isolation: isolate;
    transition: transform 320ms cubic-bezier(0.22, 1, 0.36, 1),
                box-shadow 320ms ease,
                border-color 320ms ease;
}
.header-logo::before {
    content: '';
    position: absolute;
    inset: -20% -12%;
    border-radius: 50%;
    background:
        radial-gradient(ellipse at 30% 35%, var(--sft-lime-glow) 0%, transparent 55%),
        radial-gradient(ellipse at 75% 75%, rgba(79,168,255,0.18) 0%, transparent 60%);
    filter: blur(28px);
    opacity: 0.16;
    transition: opacity 320ms ease, transform 320ms ease;
    z-index: -2;
    pointer-events: none;
}
.header-logo img {
    height: 100% !important;
    width: auto !important;
    max-width: 100%;
    object-fit: contain;
    background: transparent !important;
    border-radius: 0 !important;
    padding: 0 !important;
    box-shadow: none !important;
    filter: none;
}

/* Identity strip: glass pill trái, "lead" content của masthead */
.header-info {
    display: inline-flex !important;
    flex-direction: row !important;
    align-items: center !important;
    text-align: left !important;
    flex-wrap: wrap;
    order: 1;
    gap: 4px 12px !important;
    min-height: 48px;
    background: var(--sft-glass) !important;
    backdrop-filter: blur(16px) saturate(130%);
    -webkit-backdrop-filter: blur(16px) saturate(130%);
    border: 1px solid var(--sft-glass-border) !important;
    border-radius: var(--sft-r-pill) !important;
    box-shadow: var(--sft-shadow-rest) !important;
    padding: 9px 20px !important;
    transition: box-shadow 280ms ease;
}

.header-name {
    font-family: var(--sft-font-body) !important;
    font-size: 14px !important;
    font-weight: 600 !important;
    color: var(--sft-ink) !important;
    letter-spacing: -0.012em !important;
    text-decoration: none;
    line-height: 1.2;
}
.header-meta {
    font-family: var(--sft-font-body) !important;
    font-size: 12px !important;
    font-weight: 400 !important;
    color: var(--sft-ink-muted) !important;
    letter-spacing: 0 !important;
    line-height: 1.2;
    padding-left: 10px;
    border-left: 1px solid var(--sft-ink-hair);
}

.header-package {
    font-family: var(--sft-font-body) !important;
    font-size: 11px !important;
    font-weight: 600 !important;
    background: var(--sft-lime-soft) !important;
    color: var(--sft-lime-deep) !important;
    padding: 4px 11px !important;
    margin-top: 0 !important;
    border: 1px solid rgba(154, 205, 50, 0.28) !important;
    letter-spacing: 0.01em !important;
    width: fit-content;
    line-height: 1.2;
}

/* Token copy button — gặp Thầy AI nhanh, cùng family với pill identity */
.header-token-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px 5px 10px;
    margin: 0;
    background: linear-gradient(135deg,
        rgba(154, 205, 50, 0.16) 0%,
        rgba(154, 205, 50, 0.08) 100%) !important;
    border: 1px solid rgba(154, 205, 50, 0.32) !important;
    border-radius: 999px !important;
    font-family: var(--sft-font-body) !important;
    font-size: 11px !important;
    font-weight: 600 !important;
    color: var(--sft-lime-deep) !important;
    cursor: pointer;
    line-height: 1.2;
    letter-spacing: 0.01em;
    white-space: nowrap;
    -webkit-tap-highlight-color: transparent;
    transition: background 220ms ease, border-color 220ms ease,
                transform 220ms ease, box-shadow 220ms ease, color 220ms ease;
}
.header-token-btn .header-token-icon {
    font-size: 10px;
    line-height: 1;
    transition: transform 220ms ease;
}
.header-token-btn:hover {
    background: linear-gradient(135deg,
        rgba(154, 205, 50, 0.26) 0%,
        rgba(154, 205, 50, 0.14) 100%) !important;
    border-color: rgba(154, 205, 50, 0.5) !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(154, 205, 50, 0.18);
}
.header-token-btn:hover .header-token-icon {
    transform: rotate(-12deg) scale(1.1);
}
.header-token-btn:active { transform: translateY(0); }
.header-token-btn:focus-visible {
    outline: 2px solid var(--sft-lime);
    outline-offset: 2px;
}
.header-token-btn.is-copied {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%) !important;
    border-color: rgba(16, 185, 129, 0.55) !important;
    color: #ffffff !important;
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.28);
}
.header-token-btn.is-error {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%) !important;
    border-color: rgba(239, 68, 68, 0.5) !important;
    color: #b91c1c !important;
}

@media (max-width: 480px) {
    .header-token-btn { padding: 6px 10px !important; font-size: 10.5px !important; }
    .header-token-btn .header-token-label { display: none; }
    .header-token-btn .header-token-icon { font-size: 11px; }
}

/* Upgrade pill — softer lime/peach instead of harsh blue/red */
.header-package.header-package--upgrade {
    background: linear-gradient(90deg, #6B9D1F 0%, #9ACD32 40%, #6B9D1F 100%) !important;
    background-size: 200% 100% !important;
    color: #ffffff !important;
    border: 1px solid rgba(107, 157, 31, 0.4) !important;
    box-shadow: 0 4px 14px rgba(154, 205, 50, 0.32);
}
.header-package.header-package--upgrade[data-slide="b"] {
    background: linear-gradient(90deg, #B86F2D 0%, #F0B27A 40%, #B86F2D 100%) !important;
    background-size: 200% 100% !important;
    box-shadow: 0 4px 14px rgba(184, 111, 45, 0.28);
}

/* ===== 6. Hero greeting — linh hồn của buồng luyện ====================== */
.luyen-hero {
    position: relative;
    margin: 8px 0 28px;
    padding: 48px clamp(20px, 4vw, 56px) 40px;
    border-radius: var(--sft-r-2xl);
    background:
        linear-gradient(160deg,
            rgba(255,255,255,0.92) 0%,
            rgba(255,255,255,0.66) 55%,
            rgba(242,248,255,0.55) 100%);
    backdrop-filter: blur(18px) saturate(130%);
    -webkit-backdrop-filter: blur(18px) saturate(130%);
    border: 1px solid var(--sft-glass-border);
    box-shadow: var(--sft-shadow-rest);
    overflow: hidden;
    isolation: isolate;
    animation: sftHeroEnter 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.luyen-hero::before {
    content: '';
    position: absolute;
    inset: -40% -20% auto auto;
    width: 560px; height: 560px;
    background: radial-gradient(circle at center, var(--sft-lime-glow) 0%, transparent 65%);
    filter: blur(60px);
    opacity: 0.55;
    z-index: -1;
    animation: sftAurora 14s ease-in-out infinite;
}
.luyen-hero::after {
    content: '';
    position: absolute;
    inset: auto auto -30% -10%;
    width: 420px; height: 420px;
    background: radial-gradient(circle at center, rgba(79,168,255,0.30) 0%, transparent 65%);
    filter: blur(70px);
    opacity: 0.45;
    z-index: -1;
    animation: sftAurora 18s ease-in-out -7s infinite reverse;
}
@keyframes sftHeroEnter {
    from { opacity: 0; transform: translateY(14px); filter: blur(6px); }
    to   { opacity: 1; transform: translateY(0);   filter: blur(0); }
}
@keyframes sftAurora {
    0%, 100% { transform: translate(0,0) scale(1); }
    50%      { transform: translate(-30px, 20px) scale(1.08); }
}

.luyen-hero-inner {
    position: relative;
    max-width: 760px;
    margin: 0 auto;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.luyen-hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 7px 16px 7px 12px;
    background: rgba(255,255,255,0.7);
    border: 1px solid var(--sft-ink-hair);
    border-radius: var(--sft-r-pill);
    font-family: var(--sft-font-body);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.02em;
    color: var(--sft-ink-soft);
    box-shadow: 0 1px 0 rgba(255,255,255,0.8) inset, 0 4px 10px rgba(15,20,25,0.03);
    animation: sftHeroEnter 0.7s 0.1s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.luyen-hero-eyebrow .luyen-hero-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--sft-lime);
    box-shadow: 0 0 0 0 var(--sft-lime-glow);
    animation: sftDotPulse 2.2s ease-in-out infinite;
}
@keyframes sftDotPulse {
    0%,100% { box-shadow: 0 0 0 0 var(--sft-lime-glow); }
    50%     { box-shadow: 0 0 0 7px rgba(154,205,50,0); }
}
.luyen-hero-eyebrow strong { color: var(--sft-ink); font-weight: 600; }

/* Greeting — Fraunces serif elegant */
.luyen-hero-greeting {
    margin: 0;
    font-family: var(--sft-font-display);
    font-weight: 400;
    font-variation-settings: 'opsz' 144, 'SOFT' 50, 'WONK' 0;
    font-size: clamp(32px, 4.6vw, 54px);
    line-height: 1.08;
    letter-spacing: -0.022em;
    color: var(--sft-ink);
    text-wrap: balance;
    animation: sftHeroEnter 0.75s 0.16s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.luyen-hero-greeting .luyen-hero-line { color: var(--sft-ink-soft); }
.luyen-hero-greeting .luyen-hero-name {
    font-style: italic;
    font-weight: 500;
    background: linear-gradient(120deg,
        var(--sft-ink) 0%,
        var(--sft-lime-deep) 60%,
        var(--sft-ink) 100%);
    background-size: 220% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: sftNameShimmer 9s ease-in-out infinite;
}
@keyframes sftNameShimmer {
    0%,100% { background-position: 0% 50%; }
    50%     { background-position: 100% 50%; }
}

.luyen-hero-sub {
    margin: 0;
    max-width: 540px;
    font-family: var(--sft-font-body);
    font-size: 15.5px;
    font-weight: 400;
    line-height: 1.55;
    letter-spacing: -0.005em;
    color: var(--sft-ink-muted);
    animation: sftHeroEnter 0.75s 0.22s cubic-bezier(0.22, 1, 0.36, 1) both;
}

/* Progress chips */
.luyen-hero-chips {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 6px;
    animation: sftHeroEnter 0.75s 0.28s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.luyen-chip {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 9px 18px;
    background: var(--sft-glass-hi);
    border: 1px solid var(--sft-ink-hair);
    border-radius: var(--sft-r-pill);
    font-family: var(--sft-font-body);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: -0.005em;
    color: var(--sft-ink-soft);
    box-shadow: var(--sft-shadow-chip);
    transition: transform 250ms ease, box-shadow 250ms ease, background 250ms ease;
}
.luyen-chip:hover {
    transform: translateY(-2px);
    background: #ffffff;
    box-shadow: 0 1px 0 rgba(255,255,255,0.9) inset, 0 12px 28px rgba(15,20,25,0.08);
}
.luyen-chip i { font-size: 13px; line-height: 1; }
.luyen-chip strong {
    color: var(--sft-ink);
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}
.luyen-chip--rank i   { color: var(--sft-lime-deep); }
.luyen-chip--streak i { color: #E07B3C; }
.luyen-chip--time i   { color: var(--sft-sky); }
.luyen-chip--time {
    background: linear-gradient(135deg, #ffffff 0%, rgba(242,248,255,0.95) 100%);
}

/* ===== 7. Training journey card — keep editorial Fraunces, soften surface */
.tp-card {
    background: var(--sft-glass-hi) !important;
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    border: 1px solid var(--sft-glass-border) !important;
    border-radius: var(--sft-r-2xl) !important;
    box-shadow: var(--sft-shadow-lift) !important;
    padding: 24px clamp(18px, 3vw, 32px) 8px !important;
    margin: 0 0 22px !important;
    position: relative;
    overflow: hidden;
}
.tp-card::before {
    content: '';
    position: absolute;
    inset: 0 0 auto 0;
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(154, 205, 50, 0.5) 30%,
        rgba(79, 168, 255, 0.5) 70%,
        transparent 100%);
    opacity: 0.7;
    pointer-events: none;
}

/* Refine header inside tp-card */
.tp-card .tp-header {
    margin-bottom: 18px !important;
    padding-bottom: 14px !important;
    border-bottom: 1px solid var(--sft-ink-hair) !important;
}
.tp-card .tp-title {
    font-family: var(--sft-font-body) !important;
    font-size: 13px !important;
    font-weight: 600 !important;
    color: var(--sft-ink-soft) !important;
    letter-spacing: 0.02em !important;
    text-transform: none !important;
    display: flex;
    align-items: center;
    gap: 10px;
}
.tp-card .tp-title i {
    color: var(--sft-lime-deep) !important;
    font-size: 11px !important;
}
.tp-card .tp-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    font-size: 11px;
    font-weight: 700;
    color: var(--sft-ink-muted);
}
.tp-card .tp-count {
    font-family: var(--sft-font-body) !important;
    font-size: 11px !important;
    font-weight: 600 !important;
    background: var(--sft-lime-soft) !important;
    color: var(--sft-lime-deep) !important;
    padding: 3px 10px !important;
    border-radius: var(--sft-r-pill) !important;
    border: 1px solid rgba(154,205,50,0.28);
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.04em;
}
.tp-card .tp-reset {
    color: var(--sft-ink-faint) !important;
    background: transparent !important;
    border: 1px solid var(--sft-ink-hair) !important;
    border-radius: 50% !important;
    width: 32px !important;
    height: 32px !important;
    transition: all 200ms ease !important;
}
.tp-card .tp-reset:hover {
    color: var(--sft-ink) !important;
    border-color: var(--sft-ink-faint) !important;
    background: rgba(255,255,255,0.6) !important;
    transform: rotate(-90deg);
}

/* "Khám phá thêm" — nhãn lối phụ, đóng vai divider giữa hành trình và lựa chọn khác */
.tp-card .tp-explore-label {
    margin: 16px 0 0 !important;
    padding-top: 14px !important;
    border-top: 1px dashed var(--sft-ink-hair) !important;
    font-family: var(--sft-font-body) !important;
    font-size: 10px !important;
    font-weight: 700 !important;
    letter-spacing: 0.24em !important;
    text-transform: uppercase !important;
    color: var(--sft-ink-faint) !important;
}

/* Lối phụ nhẹ hơn hành trình: bỏ viền trên (đã có nhãn divider), giữ vách ngăn dọc mảnh */
.tp-card .tp-actions {
    border-top: none !important;
    margin-top: 2px !important;
}
.tp-card .tp-action {
    border-right: 1px dashed var(--sft-ink-hair) !important;
}
.tp-card .tp-actions .tp-action:last-child { border-right: none !important; }

/* Highlight current step card softly */
.tp-card .tp-steps--no-rail .tp-step.step-current {
    background: linear-gradient(180deg,
        rgba(154, 205, 50, 0.06) 0%,
        rgba(154, 205, 50, 0.02) 100%) !important;
    border-radius: var(--sft-r-xl);
    box-shadow: 0 0 0 1px rgba(154, 205, 50, 0.18),
                0 10px 30px rgba(154, 205, 50, 0.10);
}

/* ===== 8. Premium banner — refined: lime accent, soft canvas ============ */
.premium-upgrade-banner {
    margin: 14px 0 24px !important;
    padding: 28px clamp(20px, 3vw, 32px) !important;
    background:
        linear-gradient(135deg,
            #ffffff 0%,
            var(--sft-canvas-2) 48%,
            rgba(242, 248, 255, 0.85) 100%) !important;
    border: 1px solid var(--sft-glass-border) !important;
    border-radius: var(--sft-r-2xl) !important;
    box-shadow: var(--sft-shadow-lift) !important;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    font-family: var(--sft-font-body) !important;
}
.premium-upgrade-banner:hover {
    transform: translateY(-2px);
    border-color: rgba(154, 205, 50, 0.32) !important;
    box-shadow: 0 1px 0 rgba(255,255,255,0.95) inset,
                0 8px 18px rgba(15, 20, 25, 0.06),
                0 36px 80px rgba(15, 20, 25, 0.12) !important;
}

.premium-upgrade-banner .pb-glow {
    background: radial-gradient(circle at center,
        var(--sft-lime-glow) 0%,
        rgba(79, 168, 255, 0.18) 45%,
        transparent 70%) !important;
}
.premium-upgrade-banner .pb-glow--left {
    background: radial-gradient(circle at center,
        rgba(79, 168, 255, 0.22) 0%,
        var(--sft-lime-soft) 45%,
        transparent 70%) !important;
}

.premium-upgrade-banner .pb-eyebrow {
    background: var(--sft-lime-soft) !important;
    border: 1px solid rgba(154, 205, 50, 0.32) !important;
    color: var(--sft-lime-deep) !important;
    letter-spacing: 0.06em !important;
    font-weight: 600 !important;
}
.premium-upgrade-banner .pb-eyebrow .pb-spark {
    background: radial-gradient(circle, var(--sft-lime), var(--sft-lime-deep)) !important;
}

.premium-upgrade-banner .pb-title {
    font-family: var(--sft-font-display) !important;
    font-variation-settings: 'opsz' 144, 'SOFT' 30;
    font-weight: 400 !important;
    letter-spacing: -0.02em !important;
    color: var(--sft-ink) !important;
}
.premium-upgrade-banner .pb-title em {
    font-style: italic !important;
    font-weight: 500 !important;
    background: linear-gradient(120deg,
        var(--sft-lime-deep) 0%,
        var(--sft-sky) 60%,
        var(--sft-lime-deep) 100%) !important;
    background-size: 220% 100% !important;
    -webkit-background-clip: text !important;
    background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
}
.premium-upgrade-banner .pb-title .pb-sparkle {
    background: linear-gradient(135deg, var(--sft-lime), var(--sft-warm)) !important;
    -webkit-background-clip: text !important;
    background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
}

.premium-upgrade-banner .pb-sub {
    font-family: var(--sft-font-body) !important;
    color: var(--sft-ink-soft) !important;
    font-size: 14px !important;
}
.premium-upgrade-banner .pb-sub strong { color: var(--sft-lime-deep) !important; }
.premium-upgrade-banner .pb-sub .pb-rank {
    background: var(--sft-lime-soft) !important;
    border: 1px solid rgba(154, 205, 50, 0.28) !important;
    color: var(--sft-ink) !important;
}

.premium-upgrade-banner .pb-perks li {
    font-family: var(--sft-font-body) !important;
    color: var(--sft-ink-muted) !important;
}
.premium-upgrade-banner .pb-perks li .pb-perk-icon {
    background: var(--sft-lime-soft) !important;
    color: var(--sft-lime-deep) !important;
}
.premium-upgrade-banner .pb-perks li.pb-perk--hero { color: var(--sft-ink) !important; }
.premium-upgrade-banner .pb-perks li.pb-perk--hero .pb-perk-icon {
    background: linear-gradient(135deg, var(--sft-warm-soft), var(--sft-lime-soft)) !important;
    color: #B86F2D !important;
    box-shadow: 0 0 0 2px rgba(240, 178, 122, 0.18) !important;
}

.premium-upgrade-banner .pb-price-kicker {
    font-family: var(--sft-font-body) !important;
    color: var(--sft-ink-muted) !important;
    letter-spacing: 0.10em !important;
}
.premium-upgrade-banner .pb-price-kicker .pb-live { background: var(--sft-lime) !important; }
.premium-upgrade-banner .pb-price-old {
    font-family: var(--sft-font-body) !important;
    color: var(--sft-ink-faint) !important;
}
.premium-upgrade-banner .pb-price-new {
    font-family: var(--sft-font-display) !important;
    font-variation-settings: 'opsz' 144;
    font-weight: 500 !important;
    background: linear-gradient(135deg, var(--sft-lime-deep) 0%, var(--sft-lime) 100%) !important;
    -webkit-background-clip: text !important;
    background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    letter-spacing: -0.03em !important;
}

.premium-upgrade-banner .pb-save {
    background: linear-gradient(135deg, var(--sft-lime-deep), var(--sft-lime)) !important;
    color: #ffffff !important;
    font-family: var(--sft-font-body) !important;
    box-shadow: 0 6px 14px rgba(107, 157, 31, 0.28) !important;
    letter-spacing: 0.04em !important;
}

.premium-upgrade-banner .pb-cta {
    font-family: var(--sft-font-body) !important;
    background: linear-gradient(135deg, var(--sft-ink) 0%, #2A3338 100%) !important;
    color: #ffffff !important;
    border-radius: var(--sft-r-pill) !important;
    padding: 14px 28px !important;
    font-weight: 600 !important;
    letter-spacing: -0.005em !important;
    box-shadow: 0 12px 28px rgba(15, 20, 25, 0.20),
                inset 0 1px 0 rgba(255,255,255,0.12) !important;
    animation: none !important;
}
.premium-upgrade-banner:hover .pb-cta {
    background: linear-gradient(135deg, #0F1419 0%, var(--sft-lime-deep) 100%) !important;
    box-shadow: 0 14px 32px rgba(107, 157, 31, 0.35),
                inset 0 1px 0 rgba(255,255,255,0.16) !important;
}

.premium-upgrade-banner .pb-trust {
    font-family: var(--sft-font-body) !important;
    color: var(--sft-ink-muted) !important;
}
.premium-upgrade-banner .pb-trust .pb-check { color: var(--sft-lime-deep) !important; }

/* ===== 9. Footer — minimal & elegant ==================================== */
footer {
    margin-top: 60px !important;
    padding: 32px 20px !important;
    border-top: 1px solid var(--sft-ink-hair) !important;
    text-align: center;
    font-family: var(--sft-font-body) !important;
    font-size: 12.5px;
    color: var(--sft-ink-muted);
    letter-spacing: 0.005em;
}
footer p { margin: 16px 0 0; }
footer .action-btn,
footer .theory-btn {
    font-family: var(--sft-font-body) !important;
    font-size: 13px !important;
    font-weight: 500 !important;
    padding: 10px 24px !important;
    background: rgba(255, 255, 255, 0.7) !important;
    color: var(--sft-ink-soft) !important;
    border: 1px solid var(--sft-ink-hair) !important;
    border-radius: var(--sft-r-pill) !important;
    text-decoration: none !important;
    transition: all 220ms ease !important;
    box-shadow: var(--sft-shadow-chip) !important;
    display: inline-flex !important;
    align-items: center;
    gap: 8px;
}
footer .action-btn:hover,
footer .theory-btn:hover {
    background: #ffffff !important;
    color: var(--sft-ink) !important;
    transform: translateY(-1px);
    border-color: var(--sft-ink-faint) !important;
}

/* ===== 10. Responsive ==================================================== */
@media (max-width: 768px) {
    .default-main-content1 { padding: 18px 14px 48px !important; }
    .luyen-hero {
        padding: 32px 18px 28px;
        margin-bottom: 20px;
        border-radius: var(--sft-r-xl);
    }
    .luyen-hero-greeting { font-size: clamp(26px, 7vw, 36px); }
    .luyen-hero-sub      { font-size: 14px; }
    .luyen-chip          { font-size: 12px; padding: 7px 14px; }
    .tp-card             { padding: 18px 16px 4px !important; border-radius: var(--sft-r-xl) !important; }
}
@media (max-width: 768px) {
    /* Tablet: vẫn masthead trái-phải, hai thẻ cùng gọn nhịp nhàng */
    .header-left { gap: 14px !important; }
    .header-logo { height: 64px !important; padding: 8px 14px !important; border-radius: 18px !important; }
    .header-info { min-height: 46px; }
}

@media (max-width: 560px) {
    /* Mobile: stack — logo card TRÊN cân giữa, pill DƯỚI cân giữa */
    .header-left {
        flex-direction: column !important;
        justify-content: center !important;
        align-items: center !important;
        gap: 12px !important;
        text-align: center !important;
    }
    .header-logo {
        order: 1 !important;
        height: 60px !important;
        padding: 8px 16px !important;
        border-radius: 18px !important;
    }
    .header-logo::before { inset: -18% -22%; opacity: 0.32; }
    .header-info {
        order: 2 !important;
        justify-content: center !important;
        text-align: center !important;
    }
}

@media (max-width: 480px) {
    .luyen-hero { padding: 26px 16px 22px; }
    .luyen-hero-greeting { font-size: 26px; }
    .luyen-hero-eyebrow { font-size: 11px; padding: 6px 12px 6px 10px; }
    .header-logo { height: 56px !important; padding: 7px 14px !important; border-radius: 16px !important; }
    .header-info { min-height: 44px; padding: 8px 16px !important; gap: 4px 10px !important; }
    .header-name { font-size: 14px !important; }
    .header-meta { padding-left: 8px !important; font-size: 11.5px !important; }
}

@media (max-width: 360px) {
    .header-logo { height: 52px !important; padding: 6px 12px !important; }
    .header-info { padding: 7px 14px !important; }
}

@media (prefers-reduced-motion: reduce) {
    .luyen-hero,
    .luyen-hero-eyebrow,
    .luyen-hero-greeting,
    .luyen-hero-sub,
    .luyen-hero-chips { animation: none !important; }
    .luyen-hero::before, .luyen-hero::after { animation: none !important; }
    .luyen-hero-eyebrow .luyen-hero-dot { animation: none !important; }
    .luyen-hero-greeting .luyen-hero-name { animation: none !important; }
}

/* ===== 11. Floating Help FAB — Messenger trợ giúp ====================== */
/* Tinh thần: luôn hiện, dễ thấy, không xâm phạm — pill mềm với pulse rất nhẹ */
/* Filled Messenger blue 44×44 — to rõ + pulse mạnh, đối xứng visual với badge đỏ filled của chuông. */
.luyen-help-fab {
    position: fixed;
    top: 61px;          /* ngay dưới chuông 42×42 (top:11 + 42 + 8 khoảng cách) — xếp cặp dọc */
    right: 15px;        /* cùng mép phải với chuông thông báo, kích thước 42×42 đều nhau */
    z-index: 9998;      /* dưới chuông (.tb-bell 9999) để dropdown thông báo che được khi mở */
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    width: 42px;
    height: 42px;
    padding: 0;
    background: linear-gradient(135deg, #00B2FF 0%, #0084FF 50%, #006AFF 100%);
    color: #ffffff !important;
    font-family: var(--sft-font-body);
    font-size: 0;
    line-height: 1;
    text-decoration: none !important;
    border-radius: 50%;
    border: 2px solid #ffffff;
    box-shadow: 0 4px 14px rgba(0, 132, 255, 0.34);
    transition: transform .2s ease, box-shadow .2s ease;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}
.luyen-help-fab:hover {
    background: linear-gradient(135deg, #0091FF 0%, #006AFF 50%, #0056D6 100%);
    color: #ffffff !important;
    text-decoration: none !important;
    transform: scale(1.08);
    box-shadow:
        0 8px 22px rgba(0, 132, 255, 0.60),
        0 0 0 6px rgba(0, 132, 255, 0.18);
    animation-play-state: paused;
}
.luyen-help-fab:active {
    transform: scale(0.96);
}
.luyen-help-fab:focus-visible {
    outline: 3px solid rgba(0, 132, 255, 0.55);
    outline-offset: 3px;
}

/* Pulse mạnh — scale + halo lan rộng, nhịp 1.6s giống nhịp của badge đỏ tbPulse */
/* Chỉ lan vòng hào quang — KHÔNG scale, để nút luôn đúng 42×42 đều với chuông */
@keyframes sftHelpFabPulse {
    0% {
        box-shadow:
            0 4px 14px rgba(0, 132, 255, 0.45),
            0 0 0 0 rgba(0, 132, 255, 0.45);
    }
    70% {
        box-shadow:
            0 4px 14px rgba(0, 132, 255, 0.45),
            0 0 0 12px rgba(0, 132, 255, 0);
    }
    100% {
        box-shadow:
            0 4px 14px rgba(0, 132, 255, 0.45),
            0 0 0 0 rgba(0, 132, 255, 0);
    }
}

/* Indicator/halo cũ: tắt */
.luyen-help-pulse { display: none; }
.luyen-help-dot   { display: none; }

/* Icon container — "?" đậm trắng trong nút filled (24×24 cân với bell svg) */
.luyen-help-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: transparent;
    flex-shrink: 0;
    color: inherit;
}
.luyen-help-icon svg {
    display: block;
    width: 24px;
    height: 24px;
    color: inherit;
}

/* Label được ẩn hoàn toàn (giữ cho screen reader) — nút giờ là icon-only ở mọi kích thước */
.luyen-help-label {
    position: absolute;
    width: 1px; height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    white-space: nowrap;
}

/* Reduced motion: tắt pulse + hover transform */
@media (prefers-reduced-motion: reduce) {
    .luyen-help-pulse { animation: none !important; }
    .luyen-help-fab,
    .luyen-help-fab:hover,
    .luyen-help-icon,
    .luyen-help-fab:hover .luyen-help-icon { transition: none !important; transform: none !important; }
}