/* ============================================================
   Practice Topic Explorer — "Quest Map" redesign
   Built for Grade 4/5 learners (~8-9 years old).
   Feel: premium kids-learning-app / game dashboard, not a
   school website. Chunky "popsicle" buttons, one mascot as
   the memorable element, color-coded topic worlds, a winding
   quest trail for skill stages.

   NOTE: every class/id consumed by practice-topics.js is
   preserved: #topicSelect, #skillsContainer, .empty-state,
   .section-card / .skill-category, .section-header,
   .toggle-icon, .subcards-container, .sub-card, .icon-bubble,
   .code-badge, .name, .play-btn, .active.
   ============================================================ */

:root {
    /* --- legacy palette kept (in case JS ever sets --cat inline) --- */
    --practice-primary: #4A90E2;
    --practice-secondary: #50E3C2;
    --practice-sky: #35A7FF;
    --practice-mint-bright: #2ECC71;
    --practice-sun: #F1C40F;
    --practice-purple: #9B59B6;
    --practice-pink: #FF6B6B;
    --practice-bg: #F8F9FA;

    /* --- Quest Map tokens --- */
    --ink: #2D2A45;
    --ink-soft: #6E6789;
    --paper: #FFF6E9;
    --card: #FFFFFF;
    --coral: #FF6F5E;
    --sunshine: #FFC24B;
    --sky2: #2EC4D6;
    --grape: #8C6FFF;
    --leaf: #45C08A;
    --bubblegum: #FF6FA5;
    --line: #ECE4FB;
    --trail: #D8CFF0;

    --shadow-ink: rgba(45, 42, 69, 0.16);
}

/* ------------------------------------------------------------
   Base / page
   ------------------------------------------------------------ */
body {
    font-family: 'Nunito', 'Poppins', sans-serif;
    margin: 0;
    color: var(--ink);
}

.practice-page {
    background-color: var(--paper);
    background-image: radial-gradient(circle, rgba(140, 111, 255, 0.12) 1.6px, transparent 1.6px);
    background-size: 28px 28px;
    padding: 3rem 1.5rem 5rem;
    min-height: 70vh;
    position: relative;
    overflow: hidden;
}

/* soft decorative shapes drifting behind the content */
.bg-float {
    position: absolute;
    font-size: 1.6rem;
    color: var(--trail);
    opacity: 0.55;
    pointer-events: none;
    animation: drift 9s ease-in-out infinite;
    z-index: 0;
}
.bg-float--1 { top: 8%;  left: 6%;  font-size: 1.1rem; color: var(--sunshine); animation-delay: 0s; }
.bg-float--2 { top: 18%; right: 9%; font-size: 2rem;   color: var(--sky2);     animation-delay: 1.4s; }
.bg-float--3 { bottom: 24%; left: 4%; font-size: 0.9rem; color: var(--coral);  animation-delay: 2.6s; }
.bg-float--4 { bottom: 10%; right: 7%; font-size: 1.3rem; color: var(--grape); animation-delay: 3.8s; }

@keyframes drift {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-14px) rotate(14deg); }
}

/* ------------------------------------------------------------
   Hero
   ------------------------------------------------------------ */
.portal-header {
    max-width: 980px;
    margin: 0 auto 2.75rem;
    position: relative;
    z-index: 1;
}

.hero-row {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    text-align: left;
}

.hero-copy { flex: 1 1 320px; min-width: 240px; text-align: center; }

@media (min-width: 720px) {
    .hero-copy { text-align: left; }
}

.portal-header h1 {
    font-family: 'Baloo 2', 'Nunito', sans-serif;
    font-weight: 800;
    font-size: clamp(1.9rem, 4.4vw, 2.7rem);
    letter-spacing: 0.2px;
    margin: 0 0 0.35rem;
    background: linear-gradient(100deg, var(--coral) 0%, var(--grape) 55%, var(--sky2) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.15;
}

.portal-header p {
    font-size: 1.08rem;
    color: var(--ink-soft);
    font-weight: 700;
    margin: 0;
}

/* --- mascot: a friendly round "quest buddy" built from CSS shapes --- */
.mascot {
    position: relative;
    width: 92px;
    height: 92px;
    flex: 0 0 auto;
    animation: mascot-bob 3.2s ease-in-out infinite;
}

@keyframes mascot-bob {
    0%, 100% { transform: translateY(0) rotate(-2deg); }
    50% { transform: translateY(-8px) rotate(2deg); }
}

.mascot__body {
    position: absolute;
    inset: 10px 0 0 0;
    background: var(--sunshine);
    border: 4px solid var(--ink);
    border-radius: 50%;
    box-shadow: inset 0 -10px 0 rgba(0,0,0,0.06);
}

.mascot__ear {
    position: absolute;
    top: 2px;
    width: 20px;
    height: 26px;
    background: var(--sunshine);
    border: 4px solid var(--ink);
    border-radius: 50% 50% 0 0;
}
.mascot__ear--l { left: 8px; transform: rotate(-18deg); }
.mascot__ear--r { right: 8px; transform: rotate(18deg); }

.mascot__eye {
    position: absolute;
    top: 34px;
    width: 20px;
    height: 20px;
    background: #fff;
    border: 3px solid var(--ink);
    border-radius: 50%;
}
.mascot__eye--l { left: 16px; }
.mascot__eye--r { right: 16px; }
.mascot__eye span {
    position: absolute;
    top: 5px; left: 5px;
    width: 8px; height: 8px;
    background: var(--ink);
    border-radius: 50%;
}

.mascot__cheek {
    position: absolute;
    top: 52px;
    width: 12px; height: 8px;
    background: var(--coral);
    opacity: 0.55;
    border-radius: 50%;
}
.mascot__cheek--l { left: 12px; }
.mascot__cheek--r { right: 12px; }

.mascot__beak {
    position: absolute;
    top: 48px;
    left: 50%;
    transform: translateX(-50%);
    width: 16px; height: 12px;
    background: var(--coral);
    border: 3px solid var(--ink);
    border-radius: 0 0 10px 10px;
}

.mascot__badge {
    position: absolute;
    bottom: -6px;
    right: -6px;
    width: 30px; height: 30px;
    background: var(--grape);
    border: 3px solid #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.75rem;
    box-shadow: 0 3px 6px var(--shadow-ink);
}

/* --- stars / progress badge --- */
.stars-badge {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--card);
    border: 3px solid var(--sunshine);
    border-radius: 999px;
    padding: 10px 18px 10px 14px;
    box-shadow: 0 5px 0 #F0DFB3, 0 8px 16px var(--shadow-ink);
    font-weight: 800;
    font-family: 'Baloo 2', 'Nunito', sans-serif;
}
.stars-badge__icon { font-size: 1.15rem; }
.stars-badge__count { color: var(--ink); font-size: 1.15rem; }
.stars-badge__label {
    font-family: 'Nunito', sans-serif;
    font-weight: 700;
    font-size: 0.78rem;
    color: var(--ink-soft);
    white-space: nowrap;
}

/* ------------------------------------------------------------
   Topic picker — the "world select" tiles
   ------------------------------------------------------------ */
.topic-picker {
    margin-top: 2.25rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 14px;
}

.topic-tile {
    font-family: 'Baloo 2', 'Nunito', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    color: var(--ink);
    background: var(--card);
    border: 3px solid var(--line);
    border-radius: 20px;
    padding: 1.1rem 0.75rem 0.95rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    box-shadow: 0 6px 0 var(--line), 0 10px 18px var(--shadow-ink);
    transition: transform 0.16s cubic-bezier(0.34, 1.56, 0.64, 1),
                box-shadow 0.16s cubic-bezier(0.34, 1.56, 0.64, 1),
                border-color 0.16s ease;
}

.topic-tile__icon {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    background: var(--tile-soft, #EEF6FF);
    color: var(--tile-accent, var(--grape));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.topic-tile:hover {
    border-color: var(--tile-accent, var(--grape));
    transform: translateY(-4px);
    box-shadow: 0 9px 0 var(--tile-accent, var(--grape)), 0 16px 24px var(--shadow-ink);
}
.topic-tile:hover .topic-tile__icon { transform: rotate(-8deg) scale(1.08); }

.topic-tile:active {
    transform: translateY(1px);
    box-shadow: 0 3px 0 var(--tile-accent, var(--grape));
}

.topic-tile:focus-visible {
    outline: 3px solid var(--sky2);
    outline-offset: 3px;
}

.topic-tile.is-active {
    border-color: var(--tile-accent, var(--grape));
    background: var(--tile-soft, #EEF6FF);
    box-shadow: 0 4px 0 var(--tile-accent, var(--grape)), 0 8px 16px var(--shadow-ink);
}

.topic-tile__label { line-height: 1.2; }

/* ------------------------------------------------------------
   Fallback native <select> — kept for accessibility & keyboard
   users, demoted to a quiet secondary control under the tiles
   ------------------------------------------------------------ */
.picker-fallback {
    margin-top: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.picker-fallback label {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--ink-soft);
}

.dropdown-container {
    display: inline-flex;
    align-items: center;
    position: relative;
}

.dropdown-container .dropdown-icon {
    position: absolute;
    left: 16px;
    font-size: 1rem;
    pointer-events: none;
    z-index: 2;
}

select.topic-dropdown {
    appearance: none;
    -webkit-appearance: none;
    padding: 8px 34px 8px 40px;
    font-family: 'Nunito', sans-serif;
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--ink);
    border: 2px solid var(--line);
    border-radius: 999px;
    background-color: #fff;
    background-image: linear-gradient(45deg, transparent 50%, var(--ink-soft) 50%),
                       linear-gradient(135deg, var(--ink-soft) 50%, transparent 50%);
    background-position: calc(100% - 18px) calc(50% - 2px), calc(100% - 13px) calc(50% - 2px);
    background-size: 5px 5px, 5px 5px;
    background-repeat: no-repeat;
    cursor: pointer;
    outline: none;
    transition: border-color 0.15s ease;
}

select.topic-dropdown:hover { border-color: var(--grape); }

select.topic-dropdown:focus-visible {
    outline: 3px solid var(--sky2);
    outline-offset: 2px;
}

/* ------------------------------------------------------------
   Empty / coming-soon states
   ------------------------------------------------------------ */
.empty-state,
.coming-soon {
    max-width: 480px;
    margin: 2.5rem auto 0;
    text-align: center;
    font-size: 1.02rem;
    font-weight: 700;
    color: var(--ink-soft);
    background: var(--card);
    border: 3px dashed var(--trail);
    border-radius: 20px;
    padding: 2rem 1.5rem;
    position: relative;
    z-index: 1;
}

.empty-state::before { content: "🧭"; display: block; font-size: 2.5rem; margin-bottom: 0.75rem; }
.coming-soon .coming-soon__icon { display: block; font-size: 2.5rem; margin-bottom: 0.75rem; }
.coming-soon strong {
    display: block;
    font-family: 'Baloo 2', 'Nunito', sans-serif;
    font-size: 1.2rem;
    color: var(--ink);
    margin-bottom: 0.35rem;
}

/* ------------------------------------------------------------
   Skills grid + winding quest trail
   ------------------------------------------------------------ */
.skills-grid {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    gap: 2rem;
    position: relative;
    z-index: 1;
}

.skills-grid::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 34px;
    width: 4px;
    background-image: repeating-linear-gradient(
        to bottom,
        var(--trail) 0, var(--trail) 10px,
        transparent 10px, transparent 20px
    );
    border-radius: 4px;
    z-index: 0;
}

@media (max-width: 640px) { .skills-grid::before { left: 22px; } }

/* single orchestrated reveal when a topic's stages render */
@keyframes stage-pop-in {
    from { opacity: 0; transform: translateY(14px) scale(0.98); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ------------------------------------------------------------
   Stage cards (rendered by JS as .skill-category / .section-card)
   ------------------------------------------------------------ */
.skill-category,
.section-card {
    background: var(--card);
    padding: 1.6rem 1.75rem 1.6rem 4.5rem;
    border-radius: 22px;
    border: 3px solid var(--line);
    box-shadow: 0 8px 0 -2px rgba(45, 42, 69, 0.05), 0 14px 24px -10px var(--cat, var(--grape));
    position: relative;
    z-index: 1;
    animation: stage-pop-in 0.45s cubic-bezier(0.34, 1.56, 0.64, 1) both;
    animation-delay: calc(var(--stage-index, 0) * 0.08s);
}

.skill-category::before,
.section-card::before {
    content: "🧩";
    position: absolute;
    left: 14px;
    top: 1.6rem;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--card);
    border: 3px solid var(--cat, var(--grape));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    box-shadow: 0 4px 10px rgba(45, 42, 69, 0.12);
}

.skill-category:nth-of-type(6n+1)::before, .section-card:nth-of-type(6n+1)::before { content: "🧱"; }
.skill-category:nth-of-type(6n+2)::before, .section-card:nth-of-type(6n+2)::before { content: "🔍"; }
.skill-category:nth-of-type(6n+3)::before, .section-card:nth-of-type(6n+3)::before { content: "🎯"; }
.skill-category:nth-of-type(6n+4)::before, .section-card:nth-of-type(6n+4)::before { content: "🧠"; }
.skill-category:nth-of-type(6n+5)::before, .section-card:nth-of-type(6n+5)::before { content: "🏆"; }
.skill-category:nth-of-type(6n+0)::before, .section-card:nth-of-type(6n+0)::before { content: "🚀"; }

.section-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    cursor: pointer;
}

.skill-category h2, .skill-category h3, .skill-category h4,
.section-card h2, .section-card h3, .section-card h4 {
    font-family: 'Baloo 2', 'Nunito', sans-serif;
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--ink);
    margin: 0 0 0.3rem;
}

.skill-category p, .section-card p {
    font-size: 0.96rem;
    color: var(--ink-soft);
    font-weight: 600;
    margin: 0 0 0.6rem;
}

/* mini progress bar showing skills completed within a stage */
.stage-progress {
    display: flex;
    align-items: center;
    gap: 8px;
}
.stage-progress__track {
    flex: 1 1 auto;
    max-width: 180px;
    height: 8px;
    border-radius: 999px;
    background: var(--line);
    overflow: hidden;
}
.stage-progress__fill {
    height: 100%;
    border-radius: 999px;
    background: var(--cat, var(--grape));
    transition: width 0.4s ease;
}
.stage-progress__text {
    font-size: 0.78rem;
    font-weight: 800;
    color: var(--ink-soft);
    white-space: nowrap;
}

.toggle-icon {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--line);
    color: var(--grape);
    font-size: 0.95rem;
    margin-top: 0.15rem;
    transition: transform 0.25s ease, background 0.2s ease;
}

.section-card.active .toggle-icon,
.skill-category.active .toggle-icon {
    transform: rotate(180deg);
    background: var(--cat, var(--grape));
    color: #fff;
}

/* Sub-cards grid */
.subcards-container {
    display: none;
    padding: 1.6rem 0.15rem 0.25rem;
    margin-top: 1.2rem;
    grid-template-columns: repeat(auto-fill, minmax(168px, 1fr));
    gap: 1.3rem 1.1rem;
    border-top: 3px dashed var(--line);
}

.section-card.active .subcards-container,
.skill-category.active .subcards-container {
    display: grid;
}

/* Skill tile — a vertical "quest sticker" card, dealt out with a
   slight per-card tilt like a hand of collectible cards. Bold
   moment = the icon medallion + chunky action button; everything
   else stays quiet so those two elements read clearly. */
.sub-card {
    --tilt: 0deg;
    background: linear-gradient(180deg, var(--card-bg-soft, #EEF6FF) 0%, #FFFFFF 58%);
    border: 3px solid #FFFFFF;
    border-radius: 22px;
    padding: 1.5rem 1.1rem 1.1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.7rem;
    text-decoration: none;
    color: var(--ink);
    position: relative;
    overflow: hidden;
    box-shadow: 0 6px 0 var(--card-accent, var(--grape)), 0 14px 20px -10px var(--shadow-ink);
    animation: card-deal 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) both;
    transition: transform 0.18s cubic-bezier(0.34, 1.56, 0.64, 1),
                box-shadow 0.18s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* stagger the "deal" as each stage opens, and give every third
   card a different resting tilt so the row feels hand-placed */
.sub-card:nth-child(3n+1) { --tilt: -1.6deg; animation-delay: 0.02s; }
.sub-card:nth-child(3n+2) { --tilt: 1.4deg;  animation-delay: 0.08s; }
.sub-card:nth-child(3n)   { --tilt: -0.6deg; animation-delay: 0.14s; }

@keyframes card-deal {
    from { opacity: 0; transform: translateY(16px) rotate(0deg) scale(0.96); }
    to   { opacity: 1; transform: translateY(0) rotate(var(--tilt)) scale(1); }
}

.sub-card:hover {
    transform: translateY(-6px) rotate(var(--tilt)) scale(1.02);
    box-shadow: 0 10px 0 var(--card-accent, var(--grape)), 0 20px 28px -12px var(--shadow-ink);
}

.sub-card:active { transform: translateY(-1px) rotate(var(--tilt)) scale(0.99); box-shadow: 0 3px 0 var(--card-accent, var(--grape)); }
.sub-card:focus-visible { outline: 3px solid var(--sky2); outline-offset: 3px; }

/* a little one-time "pop" when a skill is marked complete */
.sub-card.celebrate { animation: card-celebrate 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) both; }
@keyframes card-celebrate {
    0%   { transform: rotate(var(--tilt)) scale(1); }
    35%  { transform: rotate(-4deg) scale(1.09); }
    65%  { transform: rotate(3deg) scale(0.96); }
    100% { transform: rotate(var(--tilt)) scale(1); }
}

/* folded corner ribbon carrying the skill code, e.g. "A.1" */
.sub-card .code-badge {
    position: absolute;
    top: 14px;
    left: -7px;
    font-family: 'Baloo 2', 'Nunito', sans-serif;
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.3px;
    color: #fff;
    background: var(--card-accent, var(--grape));
    padding: 4px 12px 4px 15px;
    border-radius: 0 8px 8px 0;
    box-shadow: 0 3px 6px rgba(45, 42, 69, 0.2);
}
.sub-card .code-badge::after {
    content: "";
    position: absolute;
    left: 0;
    top: 100%;
    border-width: 4px 0 0 7px;
    border-style: solid;
    border-color: transparent transparent transparent color-mix(in srgb, var(--card-accent, var(--grape)) 70%, black 15%);
}

/* icon medallion — the hero element of the card */
.sub-card .icon-bubble {
    width: 74px;
    height: 74px;
    border-radius: 50%;
    margin-top: 0.3rem;
    background: radial-gradient(circle at 32% 28%, #FFFFFF 0%, var(--card-bg-soft, #EEF6FF) 55%, var(--card-accent, #4A90E2) 145%);
    border: 4px solid #fff;
    color: var(--card-accent, #4A90E2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.7rem;
    flex-shrink: 0;
    position: relative;
    box-shadow: 0 6px 14px -5px var(--card-accent, var(--grape)), inset 0 -4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.sub-card:hover .icon-bubble { transform: rotate(-8deg) scale(1.08); }

.sub-card .card-body { display: flex; flex-direction: column; align-items: center; gap: 4px; flex-grow: 1; }

.sub-card .name {
    font-family: 'Baloo 2', 'Nunito', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    line-height: 1.3;
    color: var(--ink);
}

/* full-width chunky action button */
.sub-card .play-btn {
    margin-top: 0.3rem;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 0.6rem 0.8rem;
    border-radius: 999px;
    background: var(--card-accent, #4A90E2);
    color: #fff;
    font-family: 'Baloo 2', 'Nunito', sans-serif;
    font-weight: 700;
    font-size: 0.85rem;
    box-shadow: 0 4px 0 rgba(45, 42, 69, 0.18);
    transition: transform 0.18s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.18s ease, background 0.2s ease;
}

.sub-card .play-btn i { font-size: 0.75rem; }

.sub-card:hover .play-btn { transform: translateY(-2px); box-shadow: 0 6px 0 rgba(45, 42, 69, 0.2); }
.sub-card:active .play-btn { transform: translateY(0); box-shadow: 0 2px 0 rgba(45, 42, 69, 0.18); }

/* completed state: gold trim + a little medal sticker on the corner */
.sub-card.is-done { border-color: var(--sunshine); }
.sub-card.is-done .icon-bubble { box-shadow: 0 6px 14px -5px var(--sunshine), inset 0 -4px 6px rgba(0, 0, 0, 0.05); }
.sub-card.is-done .play-btn { background: var(--leaf); }

.sub-card.is-done::after {
    content: "\f091";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    top: 12px;
    right: 12px;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #FFD65A, #FFA63D);
    color: #fff;
    font-size: 0.8rem;
    transform: rotate(14deg);
    box-shadow: 0 3px 8px rgba(45, 42, 69, 0.25), 0 0 0 3px #fff;
}

/* ------------------------------------------------------------
   Small screens
   ------------------------------------------------------------ */
@media (max-width: 640px) {
    .skill-category, .section-card { padding: 1.4rem 1.2rem 1.4rem 3.6rem; }
    .skill-category::before, .section-card::before {
        width: 36px; height: 36px; font-size: 1.05rem; left: 6px; top: 1.4rem;
    }
    .hero-row { justify-content: center; text-align: center; }
    .stars-badge { order: 3; }
}

/* ------------------------------------------------------------
   Reduced motion
   ------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
    .mascot,
    .bg-float,
    .sub-card,
    .sub-card.celebrate,
    .sub-card .icon-bubble,
    .sub-card .play-btn,
    .topic-tile,
    .topic-tile__icon,
    .skill-category,
    .section-card,
    select.topic-dropdown {
        animation: none !important;
        transition: none !important;
    }
    .sub-card { --tilt: 0deg; }
}