/* 1. CORE LAYOUT & TYPOGRAPHY */
:root { --font-title-main: system-ui, -apple-system, sans-serif; --font-title-sub: system-ui, -apple-system, sans-serif; }
.container { background-color: var(--bg-primary); padding: 0; width: 100%; max-width: 900px; text-align: left; position: relative; margin-top: 80px; margin-bottom: 2rem; }
.main-title-container { margin-bottom: 1.5rem; line-height: 1.2; }
.main-title-primary { font-family: var(--font-title-main); color: var(--text-primary); font-weight: 300; font-size: 2.25rem; letter-spacing: -0.025em; display: inline; margin-right: 0px; }
.main-title-secondary { font-family: var(--font-title-sub); color: var(--text-secondary); font-size: 1rem; font-weight: 300; display: inline; margin-left: 4px; }
.verified-decks-link { font-size: 0.8rem; color: var(--clickable-text-color); cursor: pointer; text-decoration: underline; margin-left: 0.5rem; transition: color 0.2s; }
.verified-decks-link:hover { color: var(--clickable-text-hover-color); }
.brand-bold { font-weight: 900 !important; color: var(--text-primary); }

/* 2. INPUTS & BUTTONS */
.input-field, .textarea-field, .select-field { width: 100%; padding: 0.75rem; border: 1px solid var(--border-primary); border-radius: 0.5rem; margin-bottom: 1rem; font-size: 1rem; box-sizing: border-box; background-color: var(--bg-secondary); color: var(--text-primary); transition: background-color 0.3s, color 0.3s, border-color 0.3s; }
.input-field::placeholder, .textarea-field::placeholder { color: var(--text-secondary); }
.input-field:focus, .textarea-field:focus, .select-field:focus { outline: none; border-color: var(--border-hover); box-shadow: 0 0 0 2px var(--accent-primary); }
.button-style { display: inline-flex; align-items: center; justify-content: center; padding: 0.5rem 1rem; font-size: 0.875rem; background-color: var(--accent-primary); color: var(--bg-primary); border-radius: 0.375rem; cursor: pointer; transition: background-color 0.2s, color 0.2s, border-color 0.2s, opacity 0.2s; border: 1px solid var(--accent-primary); font-weight: 500; text-align: center; }
.button-style:hover { background-color: var(--accent-hover); border-color: var(--accent-hover); }
.button-style:disabled { background-color: var(--text-secondary); cursor: not-allowed; }
.button-danger { background-color: var(--button-danger-bg); border: 1px solid var(--button-danger-border); color: var(--button-danger-text); }
.button-danger:hover { background-color: var(--button-danger-hover-bg); border-color: var(--button-danger-hover-border); }

/* 3. MODALS, COURSE & PROGRESS */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.85); /* Slightly darker to hide background menu */
    /* Set this to the highest possible standard value */
    z-index: 100000 !important; 
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: auto; /* Ensure modal captures clicks */
}

.modal-content-box { 
    background: var(--bg-secondary); 
    color: var(--text-primary); 
    padding: 1.5rem; 
    border-radius: 0.75rem; 
    width: 90%; 
    max-width: 450px; 
    z-index: 100000 !important; 

    /* HERE IS WHERE THE MODAL HEIGHT IS DEFINED */
    max-height: 85vh; 
    
    display: flex; 
    flex-direction: column; 
    border: 1px solid var(--border-primary); 
}
#myDecksList, #verifiedDecksList { overflow-y: auto; flex: 1; margin: 1rem 0; padding-right: 5px; min-height: 0; }
.modal-actions { margin-top: auto; display: flex; justify-content: flex-end; gap: 0.5rem; flex-shrink: 0; padding-top: 10px; }
.auth-tab { padding: 0.5rem 1rem; border-bottom: 2px solid transparent; cursor: pointer; color: var(--text-secondary); }
.auth-tab.active { color: var(--text-primary); border-color: var(--accent-primary); }
.auth-error-message { color: var(--button-danger-text); background-color: color-mix(in srgb, var(--button-danger-bg) 60%, transparent); padding: 0.75rem; border-radius: 0.375rem; font-size: 0.875rem; margin-bottom: 1rem; display: none; }
#courseDetailsModal { z-index: 999990 !important; }
.progress-track { background-color: rgba(255,255,255,0.1); height: 6px; border-radius: 3px; width: 100%; overflow: hidden; position: relative; }
.progress-fill { height: 100%; background-color: var(--accent-primary); border-radius: 3px; }
.stat-pill { font-size: 0.65rem; padding: 2px 6px; border-radius: 4px; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); white-space: nowrap; }

/* 4. MCQ & SMART TOOLS */
.flashcard-rectangle.is-mcq .question-text { margin-bottom: 12px !important; padding-bottom: 0 !important; font-weight: 500 !important; font-size: 1rem !important; }
.flashcard-rectangle[data-id="grad_choice"] .mcq-option-btn { border-color: var(--accent-primary); background: rgba(245, 158, 11, 0.05); font-weight: 800; text-transform: uppercase; }
.flashcard-rectangle.is-mcq .answer-input-wrapper { margin-top: 0 !important; justify-content: flex-start !important; }
.flashcard-rectangle.is-mcq .card-ink-canvas { display: none !important; }
#hintOverlay { position: fixed; top: 100px; right: 20px; width: 280px; background: #fffbeb; border: 1px solid #f59e0b; border-radius: 8px; box-shadow: 0 10px 30px rgba(0,0,0,0.5); z-index: 96000; display: flex; flex-direction: column; }
#hintDragHandle { padding: 8px 12px; border-bottom: 1px solid #fcd34d; font-size: 0.85rem; font-weight: bold; cursor: grab; border-radius: 8px 8px 0 0; user-select: none; }
#scriptInput { caret-color: #10b981; }
#scriptOutput { box-shadow: inset 0 2px 4px rgba(0,0,0,0.5); min-height: 80px; }

/* 5. ANIMATIONS & LOADERS */
.spinner { display: inline-block; width: 12px; height: 12px; border: 2px solid rgba(255, 255, 255, 0.3); border-radius: 50%; border-top-color: currentColor; animation: spin 0.8s linear infinite; margin-right: 6px; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes fadeIn { from { opacity: 0; transform: translateY(-5px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pulseHorizontal { 0%, 100% { transform: translateY(-50%) translateX(0); } 50% { transform: translateY(-50%) translateX(-5px); } }
.intro-container { position: fixed; top: 38%; left: 50%; transform: translate(-50%, -50%); width: 90%; text-align: center; pointer-events: none; z-index: 5000; }
.static-intro { display: block; opacity: 0; font-size: 2.5rem; font-weight: 300; line-height: 1.2; letter-spacing: -0.02em; color: var(--text-primary); animation: gentleMaterialize 2.5s cubic-bezier(0.19, 1, 0.22, 1) forwards; }
@keyframes gentleMaterialize { 0% { opacity: 0; filter: blur(10px); transform: translateY(20px); } 15% { opacity: 1; filter: blur(0); transform: translateY(0); } 85% { opacity: 1; filter: blur(0); transform: translateY(0); } 100% { opacity: 0; filter: blur(10px); transform: translateY(-20px); } }
.has-cards #emptyStateContainer { opacity: 0; pointer-events: none; display: none; }

/* 6. GRADUATION & ACHIEVEMENT */
#confettiCanvas { position: fixed; top: 0; left: 0; pointer-events: none; z-index: 2147483647 !important; display: none; }
#achievementModal { z-index: 2147483640 !important; }
#achievementModal .modal-content-box { max-width: 450px; border: 2px solid var(--accent-primary); box-shadow: 0 0 40px rgba(245, 158, 11, 0.4); pointer-events: auto; }
#achievementModal .content { transform: scale(0.75) !important; transform-origin: center center; display: flex; flex-direction: column; align-items: center; justify-content: center; width: 100%; z-index: 200030 !important; }
#achievementHeader { font-size: 3rem; font-weight: 900; text-transform: uppercase; color: white; margin-bottom: 0.5rem; }
#achievementSubtitle { font-size: 1.25rem; color: var(--text-secondary); margin-bottom: 3rem; }
.achievement-wrapper { display: flex; justify-content: center; align-items: center; gap: 40px; height: 300px; perspective: 1200px; transform-style: preserve-3d; pointer-events: auto; }
#achievementCardContainer .iso-card { position: relative; width: 200px !important; height: 240px !important; background: var(--bg-card); border: 1px solid var(--border-primary); border-radius: 8px; display: flex !important; flex-direction: column !important; align-items: center !important; justify-content: center !important; text-align: center !important; transform: rotateX(35deg) rotateZ(10deg); transform-style: preserve-3d; transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275); cursor: pointer; box-shadow: 2px 2px 0px var(--border-primary), 5px 5px 15px rgba(0,0,0,0.5); }
#achievementCardContainer .iso-card:hover { transform: rotateX(35deg) rotateZ(10deg) translateZ(40px) translateY(-20px) !important; background: var(--accent-primary); border-color: white; box-shadow: 4px 4px 0px var(--border-primary), 10px 10px 30px rgba(0,0,0,0.6); z-index: 100 !important; }
#achievementCardContainer .iso-card .static-icon { position: relative !important; top: auto !important; left: auto !important; margin: 0 auto 15px auto !important; width: 80px !important; height: 80px !important; transform: translateZ(20px); fill: var(--accent-primary); transition: opacity 0.3s; }
#achievementCardContainer .iso-card.hidden { transform: rotateX(35deg) rotateZ(10deg) scale(0); opacity: 0; pointer-events: none; width: 0; margin: 0; }
#achievementCardContainer .iso-card.prompt-mode { border-color: var(--accent-primary) !important; box-shadow: 0 0 40px var(--accent-primary); background: var(--bg-card); transform: rotateX(10deg) rotateZ(0deg) scale(1.1) translateZ(50px); }
#achievementCardContainer .iso-card.collected { transform: rotateX(0deg) rotateZ(0deg) scale(1.5) translateZ(100px) !important; opacity: 0; z-index: 1000; }
.social-login-grid { display: flex; flex-direction: column; gap: 12px; margin-top: 20px; }
.social-btn { display: flex; align-items: center; justify-content: center; gap: 10px; padding: 12px; border-radius: 8px; border: 1px solid rgba(255,255,255,0.1); background: rgba(255,255,255,0.05); color: white; font-weight: 600; cursor: pointer; transition: background 0.2s; }

/* 7. MOBILE RESPONSIVENESS */
/* 7. MOBILE RESPONSIVENESS */
@media (max-width: 768px) { 
    #flashcardGridContainer { 
        display: flex !important; 
        flex-direction: column !important; 
        align-items: center !important; 
        width: 100% !important; 
    } 

    #achievementCardContainer .iso-card .lottie-anim { 
        width: 320px !important; 
        height: 320px !important; 
        transform: translate(-50%, -50%) translateZ(80px) !important; 
    } 

    #drawingModal .footer-section { 
        border: none !important; 
        background-color: var(--bg-secondary); 
        display: flex; 
        justify-content: center; 
        align-items: center; 
        flex-shrink: 0; 
        padding-top: 5px !important; 
        padding-bottom: max(15px, env(safe-area-inset-bottom)) !important; 
        gap: 10px; 
        z-index: 100; 
    } 

    #drawingModal .button-style { 
        margin: 0 !important; 
        flex: 1 1 30%; 
        font-size: 0.7rem !important; 
        padding: 8px 2px !important; 
    } 

    #submitDrawingBtn { 
        flex: 1 1 100% !important; 
        margin-bottom: 2px !important; 
    } 

    #achievementHeader { 
        font-size: 1.75rem !important; 
        line-height: 1.1; 
        margin-top: 10px; 
    } 

    #achievementSubtitle { 
        font-size: 0.9rem !important; 
        margin-bottom: 1.5rem !important; 
        color: #aaaaaa; 
    } 

    .achievement-wrapper { 
        flex-direction: column !important; 
        height: auto !important; 
        gap: 15px !important; 
        padding: 10px 0; 
    } 

    #achievementCardContainer .iso-card { 
        overflow: visible !important; 
        transform-style: preserve-3d !important; 
    } 

    #achievementCardContainer .iso-card svg { 
        width: 40px !important; 
        height: 40px !important; 
    } 

    #achievementCardContainer .iso-card .lottie-anim { 
        width: 280px !important; 
        height: 280px !important; 
        top: 50% !important; 
        left: 50% !important; 
        transform: translate(-50%, -50%) translateZ(50px) !important; 
    } 

    #achievementCardContainer .iso-card-label { 
        position: relative; 
        z-index: 10; 
        margin-top: auto !important; 
        margin-bottom: 20px !important; 
        text-shadow: 0 2px 4px rgba(0,0,0,0.8); 
    } 

    /* --- THE FIX IS APPLIED HERE --- */
    #achievementModal .modal-content-box, 
    .modal-content-box { 
        height: auto !important; 
        max-height: 85vh !important; 
        overflow-y: auto !important; 
        display: block !important; 
        padding: 1.5rem !important; 
        width: 90% !important; 
        
        /* Moving modals up by 20px */
        transform: translateY(-20px); 
    } 

    #achievementModal .content { 
        height: auto !important; 
    } 
}
/* Fix for the hidden state */
.hidden {
    display: none !important;
}