/* ==========================================================================
   Chalkboard Theme
   ========================================================================== */

/* Base */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    min-height: 100vh;
    font-family: "Courier New", Courier, monospace;
    color: #e8e0d0;
    line-height: 1.5;
    background-color: #343d43;
    -webkit-tap-highlight-color: transparent;
}

/* Chalkboard texture overlay */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0.06;
    background-image:
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(255, 255, 255, 0.03) 2px,
            rgba(255, 255, 255, 0.03) 4px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 3px,
            rgba(255, 255, 255, 0.02) 3px,
            rgba(255, 255, 255, 0.02) 6px
        );
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 0;
    font-family: "Courier New", Courier, monospace;
    font-weight: 400;
    line-height: 1.2;
    color: #f0ece4;
}

h1 {
    font-size: 2.2rem;
    letter-spacing: 0.02em;
}
h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
}
h4 {
    font-size: 1.1rem;
}

p {
    margin: 0;
}

a {
    color: inherit;
    text-decoration: none;
}

/* Layout */
.container {
    width: 100%;
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 3rem;
    position: relative;
    z-index: 1;
}

.site-main {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    width: 100%;
    padding-top: 2rem;
}

.site-footer {
    padding: 2rem 0;
    font-size: 0.8rem;
    color: rgba(232, 224, 208, 0.25);
}

/* Grid Utilities */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -0.75rem;
}

.row > * {
    padding: 0 0.75rem;
}
.col-12 {
    width: 100%;
}
.col-md-6 {
    width: 100%;
}
.col-lg-12 {
    width: 100%;
}

@media (min-width: 768px) {
    .col-md-6 {
        width: 50%;
    }
}

.text-center {
    text-align: center;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1.2rem;
    border: 2px dashed rgba(232, 224, 208, 0.3);
    border-radius: 4px;
    background: transparent;
    color: rgba(232, 224, 208, 0.6);
    font-family: "Courier New", Courier, monospace;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn:hover {
    border-color: rgba(232, 224, 208, 0.6);
    color: #e8e0d0;
}

.btn-eraser {
    border-color: rgba(220, 100, 100, 0.4);
    color: rgba(220, 100, 100, 0.7);
}

.btn-eraser:hover {
    border-color: rgba(220, 100, 100, 0.7);
    background: rgba(220, 100, 100, 0.08);
    color: #dc6464;
}

/* Skate Checklist */
.skate-checklist {
    background-color: rgba(0, 0, 0, 0.15);
    padding: 30px;
    border-radius: 4px;
    border: 1px solid rgba(232, 224, 208, 0.08);
}

#checklistContainer {
    margin-top: 2.5rem;
}

.trick-category {
    margin-bottom: 30px;
}

/* Collapsible category headings */
.category-toggle {
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    display: flex;
    align-items: center;
    padding: 6px 0;
}

.category-toggle:hover {
    color: #f4d35e;
}

.toggle-icon {
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 7px solid #e8e0d0;
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
    margin-right: 10px;
    flex-shrink: 0;
    transition: transform 0.25s ease;
}

.category-toggle[aria-expanded="true"] .toggle-icon {
    transform: rotate(90deg);
}

.category-toggle:hover .toggle-icon {
    border-left-color: #f4d35e;
}

.category-tricks {
    overflow: hidden;
    max-height: 2000px;
    transition:
        max-height 0.35s ease,
        opacity 0.25s ease;
    opacity: 1;
}

.category-tricks.collapsed {
    max-height: 0;
    opacity: 0;
}

.trick-item {
    display: flex;
    align-items: center;
    margin-bottom: 8px;
    cursor: pointer;
    padding: 10px 14px;
    border-radius: 3px;
    transition:
        background-color 0.25s,
        border-color 0.25s;
    background-color: rgba(232, 224, 208, 0.04);
    border: 1px solid rgba(232, 224, 208, 0.1);
    border-left: 3px solid rgba(232, 224, 208, 0.1);
    min-height: 48px;
    user-select: none;
    -webkit-user-select: none;
}

.trick-item:hover {
    background-color: rgba(232, 224, 208, 0.08);
    border-color: rgba(232, 224, 208, 0.2);
    border-left-color: rgba(232, 224, 208, 0.2);
}

.trick-item:active {
    background-color: rgba(232, 224, 208, 0.1);
}

.trick-item.completed {
    background-color: rgba(244, 211, 94, 0.06);
    border-color: rgba(244, 211, 94, 0.15);
    border-left-color: rgba(244, 211, 94, 0.4);
}

.trick-item.completed .trick-name {
    text-decoration: line-through;
    opacity: 0.45;
}

/* Custom Checkbox — chalk style */
.trick-checkbox {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}

.checkmark {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border: 2px solid rgba(232, 224, 208, 0.3);
    border-radius: 3px;
    margin-right: 14px;
    position: relative;
    transition: all 0.2s ease;
}

.checkmark::after {
    content: "";
    position: absolute;
    left: 7px;
    top: 3px;
    width: 6px;
    height: 12px;
    border: solid #f4d35e;
    border-width: 0 3px 3px 0;
    transform: rotate(45deg) scale(0);
    transition: transform 0.2s ease;
}

.trick-checkbox:checked ~ .checkmark {
    border-color: rgba(244, 211, 94, 0.5);
    background-color: rgba(244, 211, 94, 0.08);
}

.trick-checkbox:checked ~ .checkmark::after {
    transform: rotate(45deg) scale(1);
}

.trick-name {
    font-size: 1.05rem;
    transition: opacity 0.3s;
}

/* Progress */
.progress-stats {
    margin: 30px 0 20px;
    text-align: center;
}

.progress {
    height: 22px;
    margin-top: 15px;
    background-color: rgba(232, 224, 208, 0.08);
    border-radius: 11px;
    overflow: hidden;
    border: 1px solid rgba(232, 224, 208, 0.12);
}

.progress-bar {
    background: linear-gradient(90deg, #f4d35e, #e8c547);
    transition: width 0.5s ease;
    height: 100%;
    border-radius: 11px;
    box-shadow: 0 0 8px rgba(244, 211, 94, 0.2);
}

/* Explosion */
.explosion {
    position: fixed;
    pointer-events: none;
    z-index: 1000;
    will-change: transform, opacity;
}

.explosion-particle {
    position: absolute;
    border-radius: 50%;
    box-shadow: 0 0 10px currentColor;
    will-change: transform, opacity;
    backface-visibility: hidden;
    transform: translateZ(0);
}

/* Accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 2px solid rgba(244, 211, 94, 0.7);
    outline-offset: 2px;
}

.trick-checkbox:focus-visible ~ .checkmark {
    outline: 2px solid rgba(244, 211, 94, 0.7);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 1.7rem;
    }
    h3 {
        font-size: 1.15rem;
    }

    .container {
        padding: 0 1.5rem;
    }
    .site-main {
        padding-top: 1.5rem;
    }

    .skate-checklist {
        padding: 20px 15px;
    }

    .progress-stats {
        margin: 20px 0 15px;
    }
    .progress {
        height: 18px;
    }

    #checklistContainer {
        margin-top: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .skate-checklist {
        padding: 15px 10px;
    }

    .trick-item {
        padding: 10px 12px;
    }
}