/**
 * TaskBottomBar Component Styles
 *
 * Uses CSS variables from themes.css for automatic light/dark theme support
 *
 * Features:
 * - Navigation buttons: round, icon-only (like tracker)
 * - Action buttons: rectangular with text (primary/secondary)
 * - Three zones: left, center, right
 * - Smooth animations
 * - Responsive design
 */

/* === CONTAINER === */
.task-bottom-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;

    background-color: var(--bg-secondary);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border-primary);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);

    display: flex;
    flex-direction: column;

    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.task-bottom-bar.show {
    transform: translateY(0);
}

/* === WIDE ROW (верхняя строка) === */
.task-bottom-bar-wide-row {
    height: 192px;
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    gap: 12px;
}

/* === CAROUSEL === */
.task-carousel-container {
    flex: 1;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-behavior: smooth;
    scroll-snap-type: x mandatory;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE/Edge */
}

.task-carousel-container::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

.task-carousel-track {
    display: flex;
    gap: 16px;
    padding: 8px 0;
}

/* Spacer elements for edge card centering */
.task-carousel-track::before,
.task-carousel-track::after {
    content: '';
    flex-shrink: 0;
    min-width: calc(50% - 202px); /* 50% container - half card width (403px / 2) */
}

/* === CAROUSEL ARROWS === */
.task-carousel-arrow {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity var(--transition-base), transform var(--transition-base), background-color var(--transition-base), box-shadow var(--transition-base);
    flex-shrink: 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    opacity: 0;
    pointer-events: none;
}

/* Show arrows on hover over wide row */
.task-bottom-bar-wide-row:hover .task-carousel-arrow {
    opacity: 1;
    pointer-events: auto;
}

.task-carousel-arrow:hover {
    background-color: var(--bg-hover);
    transform: scale(1.1);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.task-carousel-arrow:active {
    transform: scale(0.95);
}

/* Hidden state (when at edges) */
.task-carousel-arrow.hidden {
    opacity: 0 !important;
    pointer-events: none !important;
}

.task-carousel-arrow .material-icons {
    font-size: 24px;
}

/* === TASK CARDS === */
.task-card {
    min-width: 403px; /* 336px * 1.2 = 403px */
    height: 144px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    flex-shrink: 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: all var(--transition-base);
    cursor: pointer;
    scroll-snap-align: center;
    scroll-snap-stop: always;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.task-card:hover {
    border-color: var(--border-hover);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.task-card.active {
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 2px var(--brand-primary);
    transform: scale(1.02);
}

/* Upper section with steps list */
.task-card-upper {
    flex: 1;
    padding: 10px 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow-y: auto;
    font-size: 0.75rem;
}

.task-card-step-item {
    color: var(--text-secondary);
    line-height: 1.4;
    padding: 2px 0;
}

/* Divider line */
.task-card-divider {
    height: 1px;
    background-color: var(--border-primary);
    margin: 0;
}

/* Lower section with user info */
.task-card-lower {
    padding: 12px 16px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.task-card-name {
    font-weight: 500;
    font-size: 0.9375rem;
    color: var(--text-color);
    line-height: 1.3;
}

.task-card-detail {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    line-height: 1.2;
}

/* === AVATAR ROW (нижняя строка) === */
.task-bottom-bar-avatar-row {
    padding: 12px 16px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

/* Frame people toggle button (кнопка сворачивания группы) */
.frame-people-toggle {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-normal);
    transition: color var(--transition-base);
    display: flex;
    align-items: center;
    gap: 4px;
}

.frame-people-toggle:hover {
    color: var(--text-primary);
}

.frame-people-toggle-text::after {
    content: ':';
}

/* Frame people count (показывается в свернутом состоянии) */
.frame-people-count {
    display: none;
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

/* Показывать счетчик когда группа свернута */
.frame-people-toggle[data-collapsed="true"] .frame-people-count {
    display: inline;
}

/* Add member button (круглая кнопка с плюсом) */
.frame-add-member-btn {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1px dashed var(--border-secondary);
    background-color: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.2s ease, transform 0.2s ease, width 0.2s ease, margin-left 0.2s ease, border-color 0.15s ease, background-color 0.15s ease, color 0.15s ease;
    flex-shrink: 0;
    margin-left: 4px; /* Близко к аватарам */
    opacity: 1;
    transform: scale(1);
    overflow: hidden;
}

/* Add member button collapsed state - hides FIRST (before avatars) */
.frame-add-member-btn.collapsed {
    opacity: 0;
    transform: scale(0);
    width: 0;
    margin-left: 0;
    transition-delay: 0s;
}

/* Add member button expanding state - appears LAST (after all avatars) */
.frame-add-member-btn:not(.collapsed) {
    transition-delay: 0.5s; /* After all 10 avatars */
}

.frame-add-member-btn:hover {
    border-color: var(--brand-primary);
    background-color: var(--bg-hover);
    color: var(--brand-primary);
    transform: scale(1.1);
}

.frame-add-member-btn:active {
    transform: scale(0.95);
}

.frame-add-member-btn .material-icons {
    font-size: 14px;
}

/* Frame people divider */
.task-bottom-bar-avatar-row .frame-people-divider {
    width: 1px;
    height: 16px;
    background-color: var(--text-tertiary);
    opacity: 0.5;
    margin: 0 4px;
}

/* Frame avatars container */
.task-bottom-bar-avatar-row .frame-avatars {
    display: flex;
    align-items: center;
    /* gap removed - using margin-right on individual avatars for smooth collapse */
}

/* Individual avatars - smooth sequential fade out */
.task-bottom-bar-avatar-row .frame-avatars .frame-avatar {
    opacity: 1;
    transform: scale(1);
    width: 24px;
    margin-right: 4px;
    overflow: hidden;
    transition: opacity 0.2s ease, transform 0.2s ease, width 0.2s ease, margin-right 0.2s ease;
}

/* Remove margin from last avatar */
.task-bottom-bar-avatar-row .frame-avatars .frame-avatar:last-child {
    margin-right: 0;
}

/* Active avatar state */
.task-bottom-bar-avatar-row .frame-avatars .frame-avatar.active {
    box-shadow: 0 0 0 2px var(--brand-primary);
    transform: scale(1.15);
}

/* Collapsed state - avatars fade out sequentially from right to left */
.task-bottom-bar-avatar-row .frame-avatars.collapsed .frame-avatar {
    opacity: 0;
    transform: scale(0);
    width: 0;
    margin-right: 0;
}

/* Apply staggered delays for sequential animation (right to left) */
.task-bottom-bar-avatar-row .frame-avatars.collapsed .frame-avatar:nth-last-child(1) {
    transition-delay: 0s;
}
.task-bottom-bar-avatar-row .frame-avatars.collapsed .frame-avatar:nth-last-child(2) {
    transition-delay: 0.05s;
}
.task-bottom-bar-avatar-row .frame-avatars.collapsed .frame-avatar:nth-last-child(3) {
    transition-delay: 0.1s;
}
.task-bottom-bar-avatar-row .frame-avatars.collapsed .frame-avatar:nth-last-child(4) {
    transition-delay: 0.15s;
}
.task-bottom-bar-avatar-row .frame-avatars.collapsed .frame-avatar:nth-last-child(5) {
    transition-delay: 0.2s;
}
.task-bottom-bar-avatar-row .frame-avatars.collapsed .frame-avatar:nth-last-child(6) {
    transition-delay: 0.25s;
}
.task-bottom-bar-avatar-row .frame-avatars.collapsed .frame-avatar:nth-last-child(7) {
    transition-delay: 0.3s;
}
.task-bottom-bar-avatar-row .frame-avatars.collapsed .frame-avatar:nth-last-child(8) {
    transition-delay: 0.35s;
}
.task-bottom-bar-avatar-row .frame-avatars.collapsed .frame-avatar:nth-last-child(9) {
    transition-delay: 0.4s;
}
.task-bottom-bar-avatar-row .frame-avatars.collapsed .frame-avatar:nth-last-child(10) {
    transition-delay: 0.45s;
}

/* Expanding - reverse delays (left to right) */
.task-bottom-bar-avatar-row .frame-avatars:not(.collapsed) .frame-avatar:nth-child(1) {
    transition-delay: 0s;
}
.task-bottom-bar-avatar-row .frame-avatars:not(.collapsed) .frame-avatar:nth-child(2) {
    transition-delay: 0.05s;
}
.task-bottom-bar-avatar-row .frame-avatars:not(.collapsed) .frame-avatar:nth-child(3) {
    transition-delay: 0.1s;
}
.task-bottom-bar-avatar-row .frame-avatars:not(.collapsed) .frame-avatar:nth-child(4) {
    transition-delay: 0.15s;
}
.task-bottom-bar-avatar-row .frame-avatars:not(.collapsed) .frame-avatar:nth-child(5) {
    transition-delay: 0.2s;
}
.task-bottom-bar-avatar-row .frame-avatars:not(.collapsed) .frame-avatar:nth-child(6) {
    transition-delay: 0.25s;
}
.task-bottom-bar-avatar-row .frame-avatars:not(.collapsed) .frame-avatar:nth-child(7) {
    transition-delay: 0.3s;
}
.task-bottom-bar-avatar-row .frame-avatars:not(.collapsed) .frame-avatar:nth-child(8) {
    transition-delay: 0.35s;
}
.task-bottom-bar-avatar-row .frame-avatars:not(.collapsed) .frame-avatar:nth-child(9) {
    transition-delay: 0.4s;
}
.task-bottom-bar-avatar-row .frame-avatars:not(.collapsed) .frame-avatar:nth-child(10) {
    transition-delay: 0.45s;
}

/* === BUTTON GROUPS === */
.task-bottom-bar-group {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.task-bottom-bar-left {
    justify-content: flex-start;
    flex: 1;
}

.task-bottom-bar-center {
    justify-content: center;
    flex: 0 1 auto;
}

.task-bottom-bar-right {
    justify-content: flex-end;
    flex: 1;
}

/* === BASE BUTTON STYLES === */
.task-bottom-bar-btn {
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    outline: none;

    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.task-bottom-bar-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.task-bottom-bar-btn .material-icons {
    font-size: 20px;
}

/* === NAVIGATION BUTTON (круглая, только иконка) === */
.task-bottom-bar-nav-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    padding: 0;

    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.task-bottom-bar-nav-btn:hover:not(:disabled) {
    background-color: var(--bg-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.task-bottom-bar-nav-btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.task-bottom-bar-nav-btn .material-icons {
    font-size: 22px;
}

/* === ACTION BUTTON (прямоугольная с текстом) === */
.task-bottom-bar-action-btn {
    height: 38px;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    white-space: nowrap;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Secondary action button */
.task-bottom-bar-action-btn.secondary {
    background-color: transparent;
    border: 1px solid var(--border-secondary);
    color: var(--text-primary);
}

.task-bottom-bar-action-btn.secondary:hover:not(:disabled) {
    background-color: var(--bg-tertiary);
    border-color: var(--border-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

/* Primary action button */
.task-bottom-bar-action-btn.primary {
    background-color: var(--brand-primary);
    border: 1px solid var(--brand-primary);
    color: var(--text-inverse);
}

.task-bottom-bar-action-btn.primary:hover:not(:disabled) {
    background-color: var(--brand-primary-hover);
    border-color: var(--brand-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.task-bottom-bar-action-btn:active:not(:disabled) {
    transform: translateY(0);
}

/* === BODY PADDING WHEN VISIBLE === */
/* Note: padding is now handled by each module's main element */
/* See modules/step-by-step/step-by-step.css for implementation */

/* === RESPONSIVE DESIGN === */
@media (max-width: 768px) {
    .task-bottom-bar-wide-row {
        height: 150px;
        padding: 12px;
        gap: 8px;
    }

    .task-carousel-arrow {
        width: 36px;
        height: 36px;
    }

    .task-carousel-arrow .material-icons {
        font-size: 20px;
    }

    .task-card {
        min-width: 346px; /* 288px * 1.2 = 346px */
        height: 120px;
    }

    .task-card-upper {
        padding: 8px 12px;
        font-size: 0.6875rem;
    }

    .task-card-step-item {
        line-height: 1.3;
    }

    .task-card-lower {
        padding: 10px 12px;
        gap: 2px;
    }

    .task-card-name {
        font-size: 0.875rem;
    }

    .task-card-detail {
        font-size: 0.75rem;
        line-height: 1.2;
    }

    .task-carousel-track::before,
    .task-carousel-track::after {
        min-width: calc(50% - 173px); /* 50% container - half card width */
    }

    .task-bottom-bar-avatar-row {
        padding: 10px 12px;
        gap: 12px;
    }

    .task-bottom-bar-group {
        gap: 8px;
    }

    /* Hide text on small screens, keep icons */
    .task-bottom-bar-action-btn .btn-text {
        display: none;
    }

    .task-bottom-bar-action-btn {
        padding: 8px 12px;
        min-width: auto;
    }

    /* Make navigation buttons slightly smaller on mobile */
    .task-bottom-bar-nav-btn {
        width: 40px;
        height: 40px;
    }

    .task-bottom-bar-nav-btn .material-icons {
        font-size: 20px;
    }

    /* Mobile padding handled by module-specific styles */
}

@media (max-width: 480px) {
    .task-bottom-bar-wide-row {
        height: 120px;
        padding: 10px;
        gap: 6px;
    }

    .task-carousel-arrow {
        width: 32px;
        height: 32px;
    }

    .task-carousel-arrow .material-icons {
        font-size: 18px;
    }

    .task-card {
        min-width: 288px; /* 240px * 1.2 = 288px */
        height: 96px;
    }

    .task-card-upper {
        padding: 6px 10px;
        font-size: 0.625rem;
        gap: 2px;
    }

    .task-card-step-item {
        line-height: 1.2;
        padding: 1px 0;
    }

    .task-card-lower {
        padding: 8px 10px;
        gap: 1px;
    }

    .task-card-name {
        font-size: 0.8125rem;
    }

    .task-card-detail {
        font-size: 0.6875rem;
        line-height: 1.2;
    }

    .task-carousel-track::before,
    .task-carousel-track::after {
        min-width: calc(50% - 144px); /* 50% container - half card width */
    }

    .task-bottom-bar-avatar-row {
        padding: 8px 10px;
        gap: 10px;
    }

    .task-bottom-bar-group {
        gap: 6px;
    }

    /* Even smaller navigation buttons on very small screens */
    .task-bottom-bar-nav-btn {
        width: 38px;
        height: 38px;
    }

    /* Small screen padding handled by module-specific styles */
}

/* === DARK THEME ADJUSTMENTS === */
/* Remove border in dark theme, keep shadow for depth */
[data-theme="dark"] .task-bottom-bar {
    border-top: none;
}

[data-theme="dark"] .task-bottom-bar-nav-btn {
    box-shadow: none;
}

[data-theme="dark"] .task-bottom-bar-action-btn {
    box-shadow: none;
}

[data-theme="dark"] .task-bottom-bar-nav-btn:hover:not(:disabled),
[data-theme="dark"] .task-bottom-bar-action-btn:hover:not(:disabled) {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}