/* ==========================================================================
   Layout - Page Structure & Main Sections
   ========================================================================== */

/* --------------------------------------------------------------------------
   App Container
   -------------------------------------------------------------------------- */

.app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding: var(--space-4);
}

.app-container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

/* --------------------------------------------------------------------------
   Bookmarks Bar
   -------------------------------------------------------------------------- */

.bookmarks {
    background-color: var(--color-bg-elevated);
    border-radius: var(--radius-lg);
    padding: var(--space-3) var(--space-4);
    box-shadow: var(--shadow-sm);
    min-height: 48px;
    display: flex;
    align-items: center;
}

.bookmarks-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    width: 100%;
    align-items: center;
}

.bookmarks-empty {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
}

.bookmarks-empty svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.bookmark-item {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    background-color: var(--color-bg-subtle);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

@media (hover: hover) and (pointer: fine) {
    .bookmark-item:hover {
        background-color: var(--color-primary);
        border-color: var(--color-primary);
        color: var(--color-text-inverse);
    }
}

.bookmark-item:active {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-text-inverse);
}

.bookmark-remove {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border-radius: var(--radius-full);
    color: var(--color-text-tertiary);
    font-size: 14px;
    line-height: 1;
    transition: all var(--transition-fast);
}

.bookmark-item:hover .bookmark-remove {
    color: var(--color-text-inverse);
}

/* --------------------------------------------------------------------------
   Header / Search Section
   -------------------------------------------------------------------------- */

.header {
    background-color: var(--color-bg-elevated);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: visible;
}

.header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--color-border);
    gap: var(--space-4);
}

.header-title {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-width: 0;
}

.header-title h1 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    white-space: nowrap;
}

.header-logo {
    width: 28px;
    height: 28px;
    color: var(--color-primary);
    flex-shrink: 0;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.boosty-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, #ff5a5f, #ff9e3f);
    color: white;
    transition: all var(--transition-fast);
}

.boosty-btn svg {
    width: 22px;
    height: 22px;
}

@media (hover: hover) and (pointer: fine) {
    .boosty-btn:hover {
        transform: scale(1.05);
        box-shadow: var(--shadow-md);
    }
}

.boosty-btn:active {
    transform: scale(0.95);
}

.header-body {
    padding: var(--space-5);
}

/* Search Section */
.search-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.search-mode {
    display: flex;
    justify-content: center;
}

/* Search Form */
.search-form {
    display: flex;
    align-items: stretch;
    gap: var(--space-3);
}

.search-inputs {
    flex: 1;
    min-width: 0;
}

.group-inputs,
.teacher-inputs {
    display: flex;
    gap: var(--space-3);
    width: 100%;
}

/* Search Results */
.search-results {
    margin-top: var(--space-2);
}

.search-results-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-3);
}

.search-results-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    max-height: 300px;
    overflow-y: auto;
}

.search-result-item {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background-color: var(--color-bg-subtle);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    text-align: left;
    font-size: var(--font-size-sm);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

@media (hover: hover) and (pointer: fine) {
    .search-result-item:hover {
        background-color: var(--color-primary);
        border-color: var(--color-primary);
        color: var(--color-text-inverse);
    }
}

.search-result-item:active {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-text-inverse);
}

/* Selection Panel */
.selection-panel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-4);
    background-color: var(--color-bg-subtle);
    border-left: 3px solid var(--color-primary);
    border-radius: var(--radius-md);
    margin-top: var(--space-3);
}

.selection-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    min-width: 0;
}

.selection-name {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    word-break: break-word;
}

.selection-meta {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

.selection-actions {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Main Content / Schedule
   -------------------------------------------------------------------------- */

.main {
    flex: 1;
}

/* Week Navigation */
.week-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
}

.week-nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

@media (hover: hover) and (pointer: fine) {
    .week-nav-btn:hover:not(:disabled) {
        background-color: var(--color-primary);
        border-color: var(--color-primary);
        color: var(--color-text-inverse);
    }
}

.week-nav-btn:active:not(:disabled) {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-text-inverse);
}

.week-nav-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.week-nav-btn svg {
    width: 20px;
    height: 20px;
}

.week-display {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    text-align: center;
    min-width: 200px;
}

/* Schedule Container */
.schedule {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

/* Day Card */
.day-card {
    background-color: var(--color-bg-elevated);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.day-card.today {
    box-shadow: var(--shadow-md);
    border: 2px solid var(--color-accent);
}

.day-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-5);
    background-color: var(--color-bg-subtle);
    border-bottom: 1px solid var(--color-border);
}

.day-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

.day-card.today .day-title {
    color: var(--color-accent);
}

.day-date {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.day-body {
    padding: var(--space-4) var(--space-5);
}

.day-empty {
    text-align: center;
    padding: var(--space-4);
    color: var(--color-text-tertiary);
    font-style: italic;
}

/* Lessons */
.lessons {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.lesson {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: var(--space-4);
    padding: var(--space-4);
    background-color: var(--color-bg-subtle);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-border-strong);
    transition: all var(--transition-fast);
}

@media (hover: hover) and (pointer: fine) {
    .lesson:hover {
        transform: translateX(4px);
    }
}

/* Lesson Type Colors */
.lesson[data-type="lecture"] { border-left-color: var(--color-lecture); }
.lesson[data-type="practice"] { border-left-color: var(--color-practice); }
.lesson[data-type="lab"] { border-left-color: var(--color-lab); }
.lesson[data-type="seminar"] { border-left-color: var(--color-seminar); }
.lesson[data-type="consult"] { border-left-color: var(--color-consult); }
.lesson[data-type="exam"] { border-left-color: var(--color-exam); }
.lesson[data-type="credit"] { border-left-color: var(--color-credit); }
.lesson[data-type="class"] { border-left-color: var(--color-class); }

.lesson-time {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.lesson-time-start {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    line-height: 1;
}

.lesson-time-end {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-top: var(--space-1);
}

.lesson-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    min-width: 0;
}

.lesson-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.lesson-name {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    flex: 1;
    min-width: 0;
    word-break: break-word;
}

.lesson-type {
    flex-shrink: 0;
}

.lesson-info-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    padding: 0;
    border: none;
    background-color: var(--color-border);
    color: var(--color-text-secondary);
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: var(--font-weight-bold);
    font-style: italic;
    font-family: serif;
    flex-shrink: 0;
    cursor: pointer;
    transition: all var(--transition-fast);
}

@media (hover: hover) and (pointer: fine) {
    .lesson-info-btn:hover {
        background-color: var(--color-primary);
        color: var(--color-text-inverse);
    }
}

.lesson-info-btn:active {
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
}

.lesson-details {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.lesson-detail {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.lesson-detail svg {
    width: 14px;
    height: 14px;
    color: var(--color-text-tertiary);
    flex-shrink: 0;
}

.lesson-detail--muted {
    opacity: 0.5;
    font-style: italic;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.footer {
    margin-top: var(--space-4);
    padding: var(--space-4);
    text-align: center;
}

.footer-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    background-color: var(--color-bg-elevated);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

@media (hover: hover) and (pointer: fine) {
    .footer-link:hover {
        color: var(--color-primary);
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
    }
}

.footer-link:active {
    color: var(--color-primary);
}

.footer-link svg {
    width: 18px;
    height: 18px;
}

/* Floating Action Buttons */
.float-buttons {
    position: fixed;
    bottom: var(--space-5);
    right: var(--space-5);
    display: none;
    flex-direction: column;
    gap: var(--space-2);
    z-index: var(--z-sticky);
}

.float-buttons.visible {
    display: flex;
}

.float-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    padding: 0;
    border: none;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.float-btn svg {
    width: 22px;
    height: 22px;
}

.float-btn-action {
    background-color: var(--color-bg-elevated);
    color: var(--color-primary);
    border: 1px solid var(--color-border);
}

@media (hover: hover) and (pointer: fine) {
    .float-btn-action:hover {
        background-color: var(--color-primary);
        color: var(--color-text-inverse);
        border-color: var(--color-primary);
        transform: scale(1.1);
        box-shadow: var(--shadow-xl);
    }
}

.float-btn-action:active {
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
    border-color: var(--color-primary);
    transform: scale(0.95);
}

/* Install Prompt */
.install-prompt {
    position: fixed;
    bottom: var(--space-5);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-5);
    background-color: var(--color-bg-elevated);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-sticky);
    max-width: calc(100% - var(--space-8));
}

.install-prompt-text {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
}

.install-prompt-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--color-text-tertiary);
    border-radius: var(--radius-md);
    cursor: pointer;
    flex-shrink: 0;
}

@media (hover: hover) and (pointer: fine) {
    .install-prompt-close:hover {
        background-color: var(--color-bg-subtle);
        color: var(--color-text);
    }
}

.install-prompt-close:active {
    background-color: var(--color-bg-subtle);
    color: var(--color-text);
}

.install-prompt-close svg {
    width: 20px;
    height: 20px;
}

/* Holiday Card */
.holiday-card {
    padding: var(--space-6);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-md);
    text-align: center;
    color: white;
}

.holiday-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-2);
    color: white;
}

.holiday-card p {
    color: rgba(255, 255, 255, 0.9);
}