/* Component Styles: Buttons, Inputs, Toasts, Loading Bar */

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background-color: transparent;
    color: var(--text-main);
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s, color 0.2s;
    font-size: 0.875rem;
}

.btn:hover {
    background-color: var(--bg-app);
    border-color: var(--text-muted);
}

.btn.active {
    background-color: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    box-shadow: inset var(--shadow-sm);
}

.btn.active:hover {
    background-color: var(--primary-hover);
    color: #ffffff;
}

[data-theme="dark"] .btn.active,
[data-theme="dark"] .btn.active:hover {
    color: #000000;
}

/* Override inner element specificity to ensure active text color wins */
.btn.active span,
.btn.active i {
    color: inherit !important;
}

/* Button Modifiers */
.btn-primary {
    background-color: var(--primary);
    color: white;
    border: none;
    font-weight: 500;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    color: white;
}

.btn-sm {
    padding: 4px;
    height: auto;
    width: auto;
}

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

.btn-icon {
    padding: 0.25rem 0.6rem;
    width: auto;
    height: 32px;
}

.btn-icon i,
.btn-icon svg {
    width: 1rem;
    height: 1rem;
}

.btn-text {
    background: none;
    border: none;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    padding: 0.4rem 0.6rem;
    height: 100%;
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
}

.btn-text:hover {
    background-color: var(--bg-app);
    color: var(--primary);
}

/* Specific Button Overrides */
#btn-ignore-enter svg,
#btn-view-only-diff svg {
    width: 0.9rem;
    height: 0.9rem;
}

#btn-theme {
    padding: 0.5rem;
}

#btn-theme svg {
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
}

/* ==========================================================================
   Panels
   ========================================================================== */
.panel {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    contain: paint;
    position: relative;
}

.panel-header {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--bg-panel);
    position: relative;
    /* For absolute centering option, though flex is used */
}

.header-center {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    /* Let clicks pass through if it overlaps bits of buttons */
    max-width: 40%;
}

.file-name-display {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.panel-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Specific Header Fonts */
.panel-header .header-left>span,
.panel-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
}

/* ==========================================================================
   Controls
   ========================================================================== */
/* Font Control Group */
.font-control-group {
    display: flex;
    align-items: center;
    gap: 0;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2px;
    background-color: transparent;
}

.font-control-group>span {
    padding: 0 0.5rem;
    font-size: 0.85rem;
    min-width: 35px;
    text-align: center;
    /* Ensure numbers align vertically */
    font-variant-numeric: tabular-nums;
    color: var(--text-muted);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ==========================================================================
   Badges & Tags
   ========================================================================== */
/* Character Count Badge */
.char-count {
    font-family: 'Inter', sans-serif;
    font-size: 12.8px !important;
    font-weight: 600;
    line-height: 1.6;
    color: var(--primary) !important;
    background-color: var(--bg-app);
    padding: 4px 9.6px;
    border-radius: var(--radius-pill);
    border: none;
    min-width: 100px;
    text-align: center;
    display: inline-block;
}

/* Version Tag */
.version-tag {
    font-size: 0.7rem;
    font-weight: normal;
    background-color: var(--primary);
    color: var(--bg-app);
    padding: 1px 4px;
    border-radius: var(--radius-sm);
    margin-left: 8px;
    vertical-align: middle;
    opacity: 0.9;
}

/* ==========================================================================
   Components
   ========================================================================== */
/* Legend */
.legend {
    display: flex;
    gap: 0.75rem;
    font-size: 0.8rem;
}

.legend-item {
    display: flex;
    align-items: center;
}

.legend-item::before {
    content: '';
    display: inline-block;
    width: 10px;
    height: 10px;
    margin-right: 4px;
    border-radius: 2px;
}

.legend-item.add::before {
    background-color: var(--diff-add-text);
}

.legend-item.del::before {
    background-color: var(--diff-del-text);
}

/* Scroll Buttons */
.scroll-buttons {
    position: fixed;
    bottom: 1rem;
    right: 1rem;
    display: grid;
    grid-template-areas:
        ". up ."
        "left . right"
        ". down .";
    gap: 0;
    z-index: var(--z-scroll-btn);
}

#btn-scroll-top {
    grid-area: up;
}

#btn-prev-change {
    grid-area: left;
}

#btn-next-change {
    grid-area: right;
}

#btn-scroll-bottom {
    grid-area: down;
}

.btn-scroll {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background-color: var(--primary);
    border: none;
    color: white;
    box-shadow: var(--shadow-btn-scroll);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    opacity: 0.8;
}

.btn-scroll svg {
    width: 24px;
    height: 24px;
}

.btn-scroll:hover {
    background-color: var(--primary-hover);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    opacity: 1;
}

[data-theme="dark"] .btn-scroll {
    color: black;
}

[data-theme="dark"] .btn-scroll:hover {
    color: black;
}

/* Toast Notification */
.toast-container {
    position: fixed;
    top: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
    pointer-events: none;
}

.toast {
    --toast-accent: var(--text-primary);
    background-color: var(--bg-panel);
    color: var(--text-primary);
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--toast-accent);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 300px;
    max-width: 90vw;
    animation: slideDown 0.3s ease-out forwards;
    pointer-events: auto;
    font-size: 0.95rem;
}

.toast.toast-error {
    --toast-accent: #ef4444;
}

.toast.toast-info {
    --toast-accent: var(--primary);
}

.toast.toast-success {
    --toast-accent: #22c55e;
}

.toast-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--toast-accent);
}

.toast.fade-out {
    animation: fadeOut 0.3s ease-in forwards;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-1rem);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }

    to {
        opacity: 0;
        transform: translateY(-1rem);
    }
}

/* Loading Bar */
.loading-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, transparent 0%, var(--primary) 30%, var(--primary) 70%, transparent 100%);
    background-size: 200% 100%;
    z-index: var(--z-loading);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.loading-bar.active {
    opacity: 1;
    animation: loadingInfo 12s infinite linear;
}

@keyframes loadingInfo {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}