/* Application Module Styles */

/* MARK: Basic HTML/Body Reset */

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

:root {
    --title-bar-height: 52px;
    --scaffold-max-width: 1200px;
    --edge-navigation-width: 240px; /* Navigation and quick jump */

    /* Safe area insets — CSS env() defaults, overridden by JS for known iOS devices */
    --sa-top: env(safe-area-inset-top, 0px);
    --sa-bottom: env(safe-area-inset-bottom, 0px);
    --sa-left: env(safe-area-inset-left, 0px);
    --sa-right: env(safe-area-inset-right, 0px);

    /* Derived helpers */
    --sa-horizontal: max(var(--sa-left), var(--sa-right));
    --content-width: calc(100% - var(--sa-horizontal) * 2);
    --scaffold-inset: 8px;
}

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    background: var(--color-bg-elevated);
    color: var(--color-text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    overflow: hidden;
    overscroll-behavior: none;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    -webkit-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
}

/* Prevent image dragging */
img {
    -webkit-user-drag: none;
    user-drag: none;
    pointer-events: none;
}

/* Allow text selection in form inputs */
input, textarea, [contenteditable="true"] {
    -webkit-user-select: text;
    user-select: text;
}

body {
    min-height: var(--app-height, 100dvh);
}

/* MARK: Scaffold Layers */

#scaffold_top,
#scaffold_page,
#scaffold_left,
#scaffold_right,
#scaffold_bottom,
#scaffold_overlay {
    pointer-events: none;
}

#scaffold_top > *,
#scaffold_page > *,
#scaffold_left > *,
#scaffold_right > *,
#scaffold_bottom > *,
#scaffold_overlay > * {
    pointer-events: auto;
}

/* Title Bar Scaffold */
#scaffold_top {
    margin-top: var(--sa-top);
    height: var(--title-bar-height);
    background: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-border-light);
}

#scaffold_title {
    height: 100%;
    width: var(--content-width);
    margin-left: var(--sa-horizontal);
}

#scaffold_page {
    position: absolute;
    left: 0;
    right: 0;
    width: var(--content-width);
    max-width: var(--scaffold-max-width);
    margin-left: auto;
    margin-right: auto;
    top: calc(var(--sa-top) + var(--title-bar-height));
    height: calc(var(--app-height, 100vh) - var(--sa-top) - var(--title-bar-height));
    display: flex;
    flex-direction: column;
    overflow: hidden;
    z-index: 1;
}

#scaffold_left {
    position: absolute;
    left: 0;
    top: var(--scaffold-inset);
    margin-top: var(--sa-top);
    height: calc(100vh
    - var(--sa-top)
    - max(16px, var(--sa-bottom) + 16px));
    width: calc(
        var(--edge-navigation-width)
        + var(--sa-horizontal)
        + var(--scaffold-inset));
    z-index: 100;
    overflow: hidden;
}

@media (orientation: landscape) {
    body.is-standalone.has-safe-area #scaffold_left,
    body.is-standalone.has-safe-area #scaffold_right {
        height: calc(100vh
        - var(--sa-top)
        - (var(--scaffold-inset) * 2));
    }
}

#scaffold_right {
    position: absolute;
    right: 0;
    top: var(--scaffold-inset);
    margin-top: var(--sa-top);
    height: calc(100vh
    - var(--sa-top)
    - max(16px, var(--sa-bottom) + 16px));
    width: calc(
        var(--edge-navigation-width)
        + var(--sa-horizontal)
        + var(--scaffold-inset));
    z-index: 100;
    overflow: hidden;
}

#scaffold_bottom {
    /* background-color: red; */
    position: fixed;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: var(--content-width);
    height: calc(100% - var(--sa-top) - var(--title-bar-height));
    max-height: 70vh;
    max-width: var(--scaffold-max-width);
    margin-left: var(--sa-left);
    margin-top: var(--sa-top);
    z-index: 50;
}

#scaffold_overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--app-height, 100vh);
    z-index: 1000;
}


/* MARK: Title Bar */

.titlebar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    padding: 0 16px;
}

.titlebar-left {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-width: 0;
    flex: 1;
}

.titlebar-right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
}

/* Hamburger Menu Trigger */
.menu-trigger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
    background: transparent;
    border: none;
    cursor: pointer;
    flex-shrink: 0;
    touch-action: manipulation;
}

.menu-trigger span {
    width: 20px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 1px;
    transition: all var(--transition-base);
}

.menu-trigger:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Page Title */
.titlebar-title {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
    min-width: 0;
    overflow: hidden;
}

.titlebar-title-text {
    margin: 0;
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.titlebar-title-meta {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    flex-shrink: 0;
}

/* Action Button - matches core-btn-secondary style */
.titlebar-action {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    background: linear-gradient(to bottom, #323236, var(--color-bg-muted));
    border: none;
    border-radius: var(--radius-md);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 1px 2px rgba(0, 0, 0, 0.2);
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    touch-action: manipulation;
}

.titlebar-action .icon {
    font-size: 15px;
    line-height: 1;
}

.titlebar-action-label {
    display: none;
}

@media (hover: hover) and (pointer: fine) {
    .titlebar-action:hover {
        background: linear-gradient(to bottom, #3e3e42, #3a3a3e);
    }
}

@media (hover: none) and (pointer: coarse) {
    .titlebar-action:active {
        background: linear-gradient(to bottom, #2a2a2e, var(--color-bg-muted));
        transform: scale(0.96);
        transition: transform 0.06s ease-out;
    }
}

.titlebar-action:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Action Badge */
.titlebar-action-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    background: var(--color-error);
    border-radius: var(--radius-full);
    color: #fff;
    font-size: 10px;
    font-weight: var(--font-weight-semibold);
    display: flex;
    align-items: center;
    justify-content: center;
}


/* MARK: Navigation Drawer */

.nav-overlay {
    position: fixed;
    inset: 0;
    background: var(--color-overlay-light);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.nav-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

.nav-drawer {
    position: absolute;
    width: var(--edge-navigation-width);
    height: 100%;
    right: 0;
    background: rgba(20, 20, 22, 0.85);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border: 1px solid var(--color-border-light);
    border-radius: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: translateX(calc(-100% - var(--scaffold-inset) - var(--sa-horizontal)));
    transition: transform var(--transition-base);
}

.nav-drawer.visible {
    transform: translateX(0);
}

.nav-drawer-header {
    height: var(--title-bar-height);
    padding: 0 var(--space-5);
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--color-border);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    flex-shrink: 0;
}

.nav-drawer-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-2) var(--space-3);
}

.nav-drawer-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    margin-bottom: var(--space-1);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    touch-action: manipulation;
}

@media (hover: hover) and (pointer: fine) {
    .nav-drawer-link:hover {
        background: rgba(255, 255, 255, 0.08);
        color: var(--color-text-primary);
    }
}

@media (hover: none) and (pointer: coarse) {
    .nav-drawer-link:active {
        background: rgba(255, 255, 255, 0.12);
        transform: scale(0.98);
        transition: transform 0.06s ease-out, background 0.06s ease-out;
    }
}

.nav-drawer-link:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: -2px;
}

.nav-drawer-link.active {
    background: var(--color-accent-bg);
    color: var(--color-accent);
}

.nav-drawer-link .icon {
    font-size: 1.1em;
    opacity: 0.8;
}

.nav-drawer-link.active .icon {
    opacity: 1;
}

.nav-drawer-link-text {
    flex: 1;
}

.nav-drawer-link-badge {
    font-size: var(--font-size-xs);
    color: var(--color-text-disabled);
    background: rgba(255, 255, 255, 0.08);
    padding: 2px 8px;
    border-radius: 10px;
    min-width: 24px;
    text-align: center;
}

.nav-drawer-link.active .nav-drawer-link-badge {
    background: rgba(60, 179, 113, 0.2);
    color: var(--color-accent);
}

.nav-drawer-section {
    padding: var(--space-4) var(--space-5) var(--space-2);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-drawer-section:first-child {
    padding-top: var(--space-2);
}

.nav-drawer-footer {
    border-top: 1px solid var(--color-border);
    padding: var(--space-3) var(--space-4);
}

body.nav-drawer-open {
    overflow: hidden;
}


/* MARK: Date Jump Drawer */

.datejump-overlay {
    position: fixed;
    inset: 0;
    background: var(--color-overlay-light);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.datejump-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

.datejump-drawer {
    position: absolute;
    width: var(--edge-navigation-width);
    height: 100%;
    background: rgba(20, 20, 22, 0.85);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border: 1px solid var(--color-border-light);
    border-radius: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: translateX(calc(100% + var(--scaffold-inset) + var(--sa-horizontal)));
    transition: transform var(--transition-base);
}

.datejump-drawer.visible {
    transform: translateX(0);
}

.datejump-header {
    height: var(--title-bar-height);
    padding: 0 var(--space-5);
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--color-border);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    flex-shrink: 0;
}

.datejump-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-2) 0;
    -webkit-overflow-scrolling: touch;
}

.date-section {
    padding: var(--space-4) var(--space-5) var(--space-2);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.date-section:first-child {
    padding-top: var(--space-2);
}

.date-item {
    padding: var(--space-3) var(--space-5);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    touch-action: manipulation;
}

@media (hover: hover) and (pointer: fine) {
    .date-item:hover {
        background: rgba(255, 255, 255, 0.08);
        color: var(--color-text-primary);
    }
}

@media (hover: none) and (pointer: coarse) {
    .date-item:active {
        background: rgba(255, 255, 255, 0.12);
    }
}

.date-item.active {
    color: var(--color-accent);
    font-weight: var(--font-weight-medium);
}


/* MARK: User Info */

.nav-user {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2);
}

.nav-user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--color-bg-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    overflow: hidden;
}

.nav-user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.nav-user-info {
    flex: 1;
    min-width: 0;
}

.nav-user-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-user-email {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}


/* MARK: Viewer Overlay */

.app-viewer-overlay {
    position: absolute;
    inset: 0;
    background: var(--color-bg-primary);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.app-viewer-overlay.visible {
    opacity: 1;
}

body.viewer-open {
    overflow: hidden;
}


/* MARK: Page States */

.app-loading-state,
.app-error-state,
.app-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 48px 24px;
    text-align: center;
}

.app-loading-text,
.app-error-message,
.app-empty-message {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-2);
}

.app-error-icon,
.app-empty-icon {
    font-size: 48px;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-4);
}

.app-error-title,
.app-empty-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.app-error-state .core-btn,
.app-empty-state .core-btn {
    margin-top: var(--space-6);
}


/* MARK: Mobile Responsive */

@media (max-width: 600px) {
    .titlebar {
        padding: 0 12px;
    }

    .titlebar-left {
        gap: var(--space-2);
    }

    .titlebar-title-text {
        font-size: var(--font-size-base);
    }
}


/* MARK: Delete Confirmation Dialog */

.app-delete-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.app-delete-backdrop.visible {
    opacity: 1;
}

.app-delete-dialog {
    width: 280px;
    padding: 24px;
    border-radius: 20px;
    background: rgba(30, 30, 34, 0.85);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border: 1px solid var(--color-border-light);
    text-align: center;
}

.app-delete-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.app-delete-message {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
}

.app-delete-actions {
    display: flex;
    gap: var(--space-3);
}

.app-delete-btn {
    flex: 1;
    padding: 10px 0;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    touch-action: manipulation;
    transition: opacity 0.15s ease;
}

.app-delete-cancel {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text-primary);
}

.app-delete-confirm {
    background: var(--color-error);
    color: #fff;
}


/* MARK: Delete Success Toast */

.app-delete-toast {
    position: fixed;
    bottom: calc(24px + var(--sa-bottom));
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    padding: 12px 24px;
    border-radius: var(--radius-full);
    background: rgba(30, 30, 34, 0.85);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border: 1px solid var(--color-border-light);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    z-index: 2000;
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.app-delete-toast.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}


/* MARK: Reduced Motion Support */

@media (prefers-reduced-motion: reduce) {
    .nav-drawer,
    .nav-overlay,
    .datejump-drawer,
    .datejump-overlay,
    .titlebar-action,
    .app-viewer-overlay,
    .app-delete-backdrop,
    .app-delete-toast {
        transition: none;
    }
}