:root {
    --border-color: #434343;
    --bg-light: #1d1d1d;
    --bg-main: #141414;
    --text-color: #e8e8e8;
    --text-secondary: #b0b0b0;
    --text-primary: #e8e8e8;
    --shadow-color: rgba(0,0,0,0.25);
    --accent-color: #2196F3; 
    --handle-height: 20px;
    --handle-gap: 4px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background: var(--bg-main);
    color: var(--text-color);
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
}
.plan-container {
    padding-top: 1rem;
    padding-bottom: 4rem;
}
.plan-header {
    margin-bottom: 2rem;
    text-align: center;
}
.plan-controls {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    gap: 2rem;
    margin: 1.5rem auto;
    max-width: 600px;
    flex-wrap: wrap;
}
.plan-search-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}
.plan-search-wrapper label {
    margin-bottom: 0;
    color: var(--text-primary);
    font-size: 0.9rem;
}
#plan-search {
    padding: 0.5rem;
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-color);
    min-width: 220px;
    font-size: 16px;
}

.search-results {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 5px 5px;
    max-height: 300px;
    overflow-y: auto;
    z-index: 10;
}
.search-result-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
}
.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover { background-color: var(--bg-main); }
.search-result-item small {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-left: 0.5rem;
}

.plan-selector-wrapper {
    max-width: 500px;
    margin: 1rem auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}
.plan-selector-wrapper label {
    margin-bottom: 0;
    color: var(--text-primary);
    flex-shrink: 0;
}

#plan-selector {
    width: auto;
    flex-grow: 1;
    max-width: 350px;
    padding: 0.6rem 2rem 0.6rem 0.75rem;
    font-size: 1rem;
    line-height: 1.2;
    background-color: var(--bg-light);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    appearance: none;
    -webkit-appearance: none;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="%23b0b0b0"><path d="M7 10l5 5 5-5z"/></svg>');
    background-repeat: no-repeat;
    background-position: right .6rem center;
    background-size: 14px 14px;
}
#plan-selector:hover { border-color: #5a5a5a; }
#plan-selector:focus { outline: 2px solid rgba(33,150,243,.4); outline-offset: 2px; }
#plan-selector:disabled { opacity: .6; cursor: not-allowed; }
#plan-selector optgroup { color: var(--text-secondary); font-weight: 600; }
#plan-selector option { background-color: var(--bg-light); color: var(--text-color); }

.plan-grid .placeholder {
    text-align: center;
    padding: 4rem 1rem;
    color: var(--text-secondary);
    background-color: var(--bg-light);
    border-radius: 8px;
}
.plan-grid table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}
.plan-grid th, .plan-grid td {
    border: 1px solid var(--border-color);
    padding: 0.5rem;
    text-align: center;
    vertical-align: top;
}
.plan-grid th {
    background-color: var(--bg-light);
    font-weight: 600;
    vertical-align: middle;
    font-size: 1.05rem;
}
.plan-grid .time-cell {
    font-weight: 700;
    font-size: 1rem;
    white-space: nowrap;
    background-color: var(--bg-light);
    vertical-align: middle;
    text-align: center;
}

.lesson-cell {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.5rem;
    margin-bottom: 0.25rem;
    font-size: 0.85rem;
    min-height: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.lesson-cell .subject { font-weight: 600; margin-bottom: 4px; }
.lesson-cell .room { color: var(--text-secondary); font-size: 0.8rem; }
.lesson-cell .teacher-link,
.lesson-cell .class-link {
    -webkit-appearance: none;
    appearance: none;
    background: none;
    border: 0;
    padding: 0;
    display: inline;
    color: inherit;
    font: inherit;
    font-size: 0.8rem;
    cursor: pointer;
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
    line-height: inherit;
    -webkit-tap-highlight-color: transparent;
}
.lesson-cell .teacher-link:hover,
.lesson-cell .class-link:hover {
    color: var(--accent-color);
    text-decoration-thickness: 2px;
}
.lesson-cell .teacher-link:focus-visible,
.lesson-cell .class-link:focus-visible {
    outline: 2px dashed var(--accent-color);
    outline-offset: 2px;
}
.lesson-cell .teacher-link:focus { outline: none; }

.swipeable-selector { display: none; }
.swipe-category { margin-bottom: 1rem; }
.swipe-category-title {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    text-align: left;
}
.swipe-list {
    display: flex;
    gap: 0.75rem;
    overflow-x: auto;
    padding-bottom: 1rem;
    scroll-snap-type: x mandatory;
    -ms-overflow-style: none;
    scrollbar-width: none;
}
.swipe-list::-webkit-scrollbar { display: none; }
.swipe-item {
    scroll-snap-align: start;
    flex: 0 0 auto;
    padding: 0.75rem 1.25rem;
    font-size: 1rem;
    background-color: var(--bg-light);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 25px;
    cursor: pointer;
    transition: background-color .2s, color .2s, border-color .2s;
}
.swipe-item.active, .swipe-item:hover {
    background-color: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.bar-toggle-handle {
    display: none;
    position: absolute;
    top: calc(-1 * var(--handle-height) + var(--handle-gap));
    left: 50%;
    transform: translateX(-50%);
    width: 56px;
    height: var(--handle-height);
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-radius: 8px 8px 0 0;
    cursor: pointer;
    z-index: 150;
    padding: 0;
}

.chevron-down {
    width: 0;
    height: 0;
    border-left: 7px solid transparent;
    border-right: 7px solid transparent;
    border-top: 8px solid var(--text-secondary);
    transition: transform .2s ease, border-top-color .2s ease;
}

.settings-wrapper{position:relative;display:flex;align-items:center;justify-content:center}
.settings-toggle{
    padding:.5rem .9rem;
    background-color:var(--bg-light);
    color:var(--text-color);
    border:1px solid var(--border-color);
    border-radius:4px;
    cursor:pointer;
    transition:background-color .15s,border-color .15s,transform .1s
}
.settings-toggle:active{transform:translateY(1px)}
.settings-menu{
    position:absolute;top:calc(100% + 6px);right:0;min-width:220px;
    background-color:var(--bg-light);border:1px solid var(--border-color);
    border-radius:8px;box-shadow:0 8px 18px var(--shadow-color);
    padding:.5rem .5rem;z-index:20;opacity:0;transform:translateY(-6px) scale(.98);
    pointer-events:none;transition:opacity .15s ease,transform .15s ease
}
.settings-menu.open{opacity:1;transform:none;pointer-events:auto}
.setting-item{display:flex;justify-content:center;align-items:center;gap:.6rem;padding:.4rem .3rem;font-size:.95rem;cursor:pointer;user-select:none}

.lesson-cell.current{
    border-color:var(--accent-color);
    box-shadow:0 0 0 1px var(--accent-color) inset;
    background-image:linear-gradient(0deg,rgba(33,150,243,.15),transparent)
}

@media screen and (max-width: 768px) {
    .plan-header {
        position: fixed; bottom: 0; left: 0; right: 0;
        background-color: rgba(30,30,30,.95);
        backdrop-filter: blur(5px);
        border-top: 1px solid var(--border-color);
        padding: .5rem; margin-bottom: 0; z-index: 100;
        box-shadow: 0 -4px 12px var(--shadow-color);
        transition: transform .3s ease-in-out;
    }

    .plan-controls { margin: 0 0 .5rem 0; gap: 1rem; justify-content: center; align-items: flex-end; }
    #plan-search { height: 40px; border-radius: 4px; }
    input, select, textarea, button { font-size: 16px; }
    .settings-toggle { height: 40px; display: inline-flex; align-items: center; justify-content: center; }
    .plan-search-wrapper { flex-grow: 1; align-items: stretch; }
    .settings-wrapper { align-self: flex-end; }
    .settings-menu .setting-item { justify-content: center; text-align: center; line-height: 1.1; }
    .settings-menu .setting-item input[type="checkbox"] { margin: 0; width: 1.1rem; height: 1.1rem; }

    .plan-selector-wrapper { display: none; }
    .swipeable-selector { display: block; padding: 0; }

    .plan-container { padding-bottom: 140px; }
    .swipe-category { margin-bottom: .5rem; }
    .swipe-category-title { margin-bottom: .25rem; font-size: .8rem; }
    .swipe-list { padding-bottom: .5rem; }
    .swipe-item { padding: .5rem 1rem; font-size: .9rem; height: 2rem; display: flex; align-items: center; }

    .lesson-cell { width: 100%; text-align: right; }

    .bar-toggle-handle { display: flex; align-items: center; justify-content: center; }
    .plan-header.bar-is-hidden { transform: translateY(calc(100% - var(--handle-height) - var(--handle-gap))); }
    .plan-header.bar-is-hidden .chevron-down { transform: rotate(180deg); }

    .settings-menu { right: 50%; transform: translateX(50%) translateY(-6px) scale(.98); }
    .settings-menu.open { transform: translateX(25%) translateY(0) scale(1); }

    .plan-container.bar-is-hidden-padding { padding-bottom: calc(var(--handle-height) + var(--handle-gap) + 16px); }

    .mobile-days { display: grid; gap: 1rem; }
    .mobile-day { border: 1px solid var(--border-color); border-radius: 8px; background-color: var(--bg-light); overflow: hidden; }
    .mobile-day-header { margin: 0; padding: .6rem .75rem; font-weight: 600; color: var(--text-color); background-color: var(--bg-main); border-bottom: 1px solid var(--border-color); text-align: center; }
    .mobile-day-content { display: block; }
    .mobile-slot { display: flex; align-items: flex-start; gap: .75rem; padding: .6rem .75rem; border-bottom: 1px solid var(--border-color); }
    .mobile-slot:last-child { border-bottom: 0; }
    .mobile-time { flex: 0 0 auto; font-weight: 700; color: var(--text-secondary); min-width: 85px; }
    .mobile-lessons { flex: 1 1 auto; display: grid; gap: .5rem; }
    .mobile-lessons.two-col { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: stretch; }
}