/* MathViz Styles - Updated for Design System */
@import url('mathviz3d.css'); /* shared .mv3d viewer styles (also used by Visual Math ch. 16) */

.mathviz-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: calc(100vh - 80px); /* Adjust for navbar height */
    padding-top: 80px;
    gap: 20px;
    padding: 100px 20px 20px 20px; /* Top padding for fixed navbar */
}

/* Sidebar */
.mathviz-sidebar {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 20px;
    padding: 20px;
    color: var(--text-color);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.05);
    height: fit-content;
}

.mathviz-sidebar h2 {
    margin: 0 0 15px 0;
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.5rem;
}

.mathviz-sidebar ul { list-style: none; padding: 0; margin: 12px 0 8px; }

.mathviz-sidebar li {
    padding: 12px 15px;
    border-radius: 12px;
    margin-bottom: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    font-weight: 500;
}

.mathviz-sidebar li:hover {
    background: rgba(255, 255, 255, 0.8);
    color: var(--primary-color);
    transform: translateX(5px);
}

.mathviz-sidebar li.active {
    background: var(--primary-color);
    color: #ffffff;
    box-shadow: 0 4px 10px rgba(67, 97, 238, 0.3);
}

.mathviz-sidebar li.disabled { opacity: 0.5; cursor: not-allowed; }
.mathviz-sidebar .sidebar-note { font-size: 12px; opacity: 0.7; margin-top: 12px; }

/* Main Content */
.mathviz-main { padding: 0; }

.panel {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 20px;
}

/* Controls Panel */
.controls {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 20px;
    padding: 20px;
    color: var(--text-color);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.05);
}

.control-group { display: flex; flex-direction: column; margin-bottom: 15px; }
.control-group label { font-size: 0.9rem; margin-bottom: 8px; font-weight: 500; color: var(--text-secondary); }

.control-group input, .control-group select {
    background: #f0f4f8;
    color: var(--text-color);
    border: none;
    border-radius: 10px;
    padding: 10px 15px;
    outline: none;
    transition: all 0.3s;
    box-shadow: inset 2px 2px 5px rgba(163, 177, 198, 0.3), 
                inset -2px -2px 5px rgba(255, 255, 255, 0.8);
}

.control-group input:focus, .control-group select:focus {
    background: #ffffff;
    box-shadow: inset 1px 1px 3px rgba(163, 177, 198, 0.4), 
                inset -1px -1px 3px rgba(255, 255, 255, 0.9),
                0 0 0 2px var(--primary-color);
}

.control-actions { display: flex; gap: 10px; margin-top: 15px; flex-wrap: wrap; }

.btn { 
    padding: 10px 16px; 
    border-radius: 10px; 
    border: none; 
    cursor: pointer; 
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    font-size: 0.9rem;
}

.btn-primary { 
    background: var(--primary-color); 
    color: #fff; 
    box-shadow: 4px 4px 10px rgba(67, 97, 238, 0.4), -4px -4px 10px rgba(255, 255, 255, 0.2);
}

.btn-primary:hover { 
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 6px 6px 14px rgba(67, 97, 238, 0.5), -6px -6px 14px rgba(255, 255, 255, 0.3);
}

.btn-secondary { 
    background: var(--secondary-color); 
    color: #fff; 
    box-shadow: 4px 4px 10px rgba(63, 55, 201, 0.4), -4px -4px 10px rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover { 
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 6px 6px 14px rgba(63, 55, 201, 0.5), -6px -6px 14px rgba(255, 255, 255, 0.3);
}

.btn-secondary.hidden { display: none; }

/* Viewport */
.viewport {
    position: relative;
    background: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 20px;
    min-height: 520px;
    overflow: hidden;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.05);
}

.renderer { width: 100%; height: 100%; min-height: 520px; display: block; }
.subview-trig-basic.renderer { min-height: 0; }

.zoom-controls { position: absolute; right: 20px; bottom: 20px; display: flex; flex-direction: column; gap: 10px; }

.zoom-btn {
    width: 45px; height: 45px;
    border-radius: 12px; 
    border: none;
    background: #f0f4f8;
    color: var(--text-secondary); 
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 4px 4px 8px rgba(163, 177, 198, 0.4), -4px -4px 8px rgba(255, 255, 255, 0.8);
    transition: all 0.3s ease;
}

.zoom-btn:hover { 
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 5px 5px 10px rgba(163, 177, 198, 0.5), -5px -5px 10px rgba(255, 255, 255, 0.9);
}

.readout {
    position: absolute; right: 20px; top: 20px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 12px;
    padding: 12px 16px;
    color: var(--text-color); font-size: 14px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.readout .label { font-weight: 600; color: var(--primary-color); margin-right: 6px; }

.hidden { display: none; }
.view { display: none; }
.view.active { display: block; }

/* Trick Trig */
.tt-viewport { 
    position: relative; 
    background: #ffffff;
}

.tt-error { margin-top: 8px; color: var(--error-color); }
.tt-svg { width: 100%; height: 100%; }
.tt-label { font: 12px Poppins, Arial, sans-serif; fill: var(--text-color); opacity: 0.85; }
.tt-square { fill: rgba(67, 97, 238, 0.1); stroke: var(--primary-color); stroke-width: 2; }
.tt-square.hyp { fill: rgba(33, 37, 41, 0.05); stroke: var(--dark-color); }
.tt-liquid { fill: var(--primary-color); opacity: 0.85; }
.tt-liquid-b { fill: var(--warning-color); opacity: 0.85; }
.tt-liquid-c { fill: var(--success-color); opacity: 0.9; }

/* Trick Trig tabs */
.tt-tabs { display: flex; gap: 10px; margin-bottom: 15px; }
.tt-tab { 
    background: #f0f4f8; 
    color: var(--text-secondary); 
    border: none; 
    border-radius: 10px; 
    padding: 10px 15px; 
    cursor: pointer; 
    font-weight: 500;
    transition: all 0.3s;
    box-shadow: 3px 3px 6px rgba(163, 177, 198, 0.3), -3px -3px 6px rgba(255, 255, 255, 0.8);
}
.tt-tab.active { 
    background: var(--primary-color); 
    color: white;
    box-shadow: 4px 4px 10px rgba(67, 97, 238, 0.4), -4px -4px 10px rgba(255, 255, 255, 0.2);
}

.subview { display: none; }
.subview.active { display: block; }

/* Trig Basic controls */
.tb-controls { margin-top: 15px; border-top: 1px dashed rgba(0,0,0,0.1); padding-top: 15px; }
.pyth-controls { margin-top: 10px; }
.tb-radio label, .tb-checkboxes label { display: inline-flex; align-items: center; gap: 8px; margin-right: 15px; font-size: 14px; cursor: pointer; }
.tb-values { margin-top: 12px; font-size: 14px; opacity: 0.9; }

/* Circle Section */
.circle-tabs { display: flex; gap: 10px; margin-bottom: 16px; }
.circle-tab { 
    background: #f0f4f8; 
    color: var(--text-secondary); 
    border: none; 
    border-radius: 10px; 
    padding: 10px 15px; 
    cursor: pointer; 
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 3px 3px 6px rgba(163, 177, 198, 0.3), -3px -3px 6px rgba(255, 255, 255, 0.8);
}
.circle-tab:hover { transform: translateY(-2px); }
.circle-tab.active { 
    background: var(--primary-color); 
    color: #ffffff;
    box-shadow: 4px 4px 10px rgba(67, 97, 238, 0.4), -4px -4px 10px rgba(255, 255, 255, 0.2);
}

/* Circle Theorems */
.theorems-controls { margin-top: 15px; border-top: 1px dashed rgba(0,0,0,0.1); padding-top: 15px; }
.theorem-tabs { 
    display: grid; 
    grid-template-columns: 1fr 1fr; 
    gap: 10px; 
    margin-top: 10px;
}
.theorem-tab { 
    background: #f0f4f8; 
    color: var(--text-secondary); 
    border: none; 
    border-radius: 8px; 
    padding: 10px 12px; 
    cursor: pointer; 
    font-size: 13px;
    text-align: center;
    transition: all 0.2s ease;
    box-shadow: 2px 2px 5px rgba(163, 177, 198, 0.3), -2px -2px 5px rgba(255, 255, 255, 0.8);
}
.theorem-tab:hover { transform: translateY(-1px); }
.theorem-tab.active { 
    background: var(--success-color); 
    color: #ffffff;
    box-shadow: 3px 3px 8px rgba(6, 214, 160, 0.4), -3px -3px 8px rgba(255, 255, 255, 0.2);
}

.subview-basic, .subview-theorems { display: none; }
.subview-basic.active, .subview-theorems.active { display: block; }

.circle-theorem-svg { width: 100%; height: 100%; }
.circle-theorem-label { 
    font: 12px Poppins, Arial, sans-serif; 
    fill: var(--text-color); 
    opacity: 0.9; 
    font-weight: 500;
}

/* Draggable points */
.draggable-point { 
    cursor: pointer; 
}
.draggable-point:hover { 
    opacity: 0.8; 
}

/* Angle arcs */
.angle-arc { 
    fill: none; 
    stroke-width: 3; 
    opacity: 0.8;
}

#theorem-readout .label { color: var(--success-color); font-weight: 600; }
#theorem-readout div { margin-bottom: 8px; padding: 4px 0; }

@media (max-width: 1200px) {
    .theorem-tabs { grid-template-columns: 1fr; }
}

@media (max-width: 1024px) {
    .mathviz-layout {
        grid-template-columns: 1fr;
        padding-top: 100px;
    }

    /* Show sidebar as a horizontal scrollable tab bar instead of hiding it */
    .mathviz-sidebar {
        height: auto;
        padding: 10px 12px;
        border-radius: 14px;
    }

    .mathviz-sidebar h2,
    .mathviz-sidebar .sidebar-note {
        display: none;
    }

    .mathviz-sidebar ul {
        display: flex;
        flex-direction: row;
        flex-wrap: wrap;
        gap: 6px;
        margin: 0;
        padding: 0;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none; /* Firefox */
    }

    .mathviz-sidebar ul::-webkit-scrollbar {
        display: none; /* Chrome/Safari */
    }

    .mathviz-sidebar li {
        flex-shrink: 0;
        margin-bottom: 0;
        padding: 8px 14px;
        white-space: nowrap;
    }

    /* Remove horizontal slide animation on touch devices */
    .mathviz-sidebar li:hover {
        transform: none;
    }

    .panel { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
    .mathviz-layout {
        padding: 80px 12px 12px 12px;
        gap: 12px;
    }

    /* Reduce renderer height so it fits the phone screen */
    .viewport {
        min-height: 320px;
    }
    .renderer {
        min-height: 320px;
    }

    /* Move readout below the canvas instead of floating over it */
    .readout {
        position: static;
        margin-top: 10px;
        border-radius: 10px;
    }

    /* Allow circle tabs to wrap on narrow screens */
    .circle-tabs {
        flex-wrap: wrap;
    }
    .circle-tab {
        flex: 1 1 auto;
        font-size: 12px;
        padding: 8px 10px;
        text-align: center;
    }

    /* Trick trig tabs wrap too */
    .tt-tabs {
        flex-wrap: wrap;
    }
    .tt-tab {
        flex: 1 1 auto;
        font-size: 12px;
        padding: 8px 10px;
        text-align: center;
    }

    /* Theorem tabs: single column on phones */
    .theorem-tabs {
        grid-template-columns: 1fr;
    }

    /* Sidebar tabs: smaller text on phones */
    .mathviz-sidebar li {
        font-size: 12px;
        padding: 7px 10px;
    }
}

/* ==========================================================================
   ░░  MATHVIZ 2.0 — DE-SLOP + SOLID GEOMETRY 3D VIEWER  ░░
   Appended last → supersedes the glass/neumorphism above. Tokens only.
   ========================================================================== */

/* --- Layout + impeccable collapsible drawer ------------------------------ */
.mathviz-layout {
    gap: var(--space-5);
    transition: grid-template-columns var(--dur-slow) var(--ease-spring);
}
.mathviz-sidebar {
    background: var(--color-surface);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: none;
    padding: var(--space-4);
    position: sticky;
    top: 96px;
}
.mathviz-drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}
.mathviz-sidebar h2 {
    color: var(--color-ink);
    font-size: var(--text-xl);
    margin: 0;
    letter-spacing: var(--tracking-tight);
}
.mathviz-drawer-toggle {
    flex-shrink: 0;
    width: 34px; height: 34px;
    display: grid; place-items: center;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    color: var(--color-ink-2);
    cursor: pointer;
    transition: var(--transition-base);
}
.mathviz-drawer-toggle:hover { background: var(--color-surface-2); color: var(--color-accent); }
.mathviz-sidebar li {
    color: var(--color-ink-2);
    border-radius: var(--radius-md);
    font-weight: var(--weight-medium);
    margin-bottom: var(--space-1);
    transition: background var(--dur) var(--ease-standard), color var(--dur) var(--ease-standard);
}
.mathviz-sidebar li:hover { background: var(--color-surface-2); color: var(--color-ink); transform: none; }
.mathviz-sidebar li.active {
    background: var(--color-accent-soft);
    color: var(--color-accent-active);
    box-shadow: inset 2px 0 0 var(--color-accent);
    font-weight: var(--weight-semibold);
}
.mathviz-sidebar li i { width: 1.1rem; text-align: center; flex-shrink: 0; }

/* Collapsed rail: icons only (font-size:0 hides raw text nodes + labels) */
.mathviz-layout.is-collapsed { grid-template-columns: 72px 1fr; }
.mathviz-layout.is-collapsed .mathviz-sidebar h2,
.mathviz-layout.is-collapsed .mathviz-sidebar .sidebar-note { display: none; }
.mathviz-layout.is-collapsed .mathviz-drawer-head { justify-content: center; }
.mathviz-layout.is-collapsed .mathviz-sidebar li { font-size: 0; justify-content: center; padding: 12px 0; }
.mathviz-layout.is-collapsed .mathviz-sidebar li i { font-size: 1.1rem; }

/* --- De-slop controls / viewport / buttons / tabs for the legacy views --- */
.controls,
.viewport {
    background: var(--color-surface);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: none;
}
.control-group input, .control-group select {
    background: var(--color-surface);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-md);
    box-shadow: none;
}
.control-group input:focus, .control-group select:focus {
    background: var(--color-surface);
    box-shadow: var(--focus-ring);
}
.mathviz-main .btn { border-radius: var(--radius-md); }
.mathviz-main .btn-primary {
    background: var(--color-accent); color: #fff; box-shadow: var(--btn-inset);
}
.mathviz-main .btn-primary:hover { background: var(--color-accent-hover); transform: translateY(-1px); box-shadow: var(--btn-inset), var(--shadow-accent-hover); }
.mathviz-main .btn-secondary {
    background: var(--color-surface); color: var(--color-ink);
    border: 1px solid var(--color-border-strong); box-shadow: var(--btn-inset-light);
}
.mathviz-main .btn-secondary:hover { background: var(--color-surface-2); border-color: var(--color-accent); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.circle-tab, .theorem-tab, .tt-tab {
    background: var(--color-surface-2); color: var(--color-ink-2);
    border: 1px solid var(--color-border); border-radius: var(--radius-md); box-shadow: none;
}
.circle-tab.active, .tt-tab.active { background: var(--color-accent); color: #fff; box-shadow: none; }
.theorem-tab.active { background: var(--color-accent); color: #fff; box-shadow: none; }
.readout {
    background: var(--color-surface);
    -webkit-backdrop-filter: none; backdrop-filter: none;
    border: 1px solid var(--color-border); border-radius: var(--radius-md);
    box-shadow: var(--shadow-pop);
}
.readout .label { color: var(--color-accent); }

/* ========================================================================== */
/*  SOLID GEOMETRY 3D VIEWER                                                   */
/* ========================================================================== */
#view-solid3d .panel { display: block; }

/* .mv3d viewer styles live in css/mathviz3d.css (imported at the top of this file). */

@media (max-width: 1024px) {
    .mathviz-sidebar { position: static; }
    .mathviz-drawer-toggle, .mathviz-drawer-head { display: none; }
}