/* General Page Reset and Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: #000000;
    position: relative;
    isolation: isolate;
    color: var(--text-primary);
    min-height: 100vh;
    overflow-y: scroll;
    overflow-x: hidden;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

.app-background-layer {
    position: fixed;
    inset: 0;
    z-index: 1;
    overflow: hidden;
    pointer-events: none;
    opacity: 0;
    transition: opacity 220ms ease;
}

.app-background-layer.is-visible {
    opacity: 1;
}

.app-background-video,
.app-background-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: none;
    filter: none;
    transform: none;
}

.app-background-video.is-active,
.app-background-image.is-active {
    display: block;
}

.app-background-layer[data-background="ashuni-lain"] {
    background: #000000;
}

.app-background-layer[data-background="ashuni-lain"] .app-background-image {
    object-fit: contain;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 2;
    pointer-events: none;
    background-image: radial-gradient(125% 125% at 50% 10%, #000000 40%, var(--background-end-color) 100%);
    background-size: 100% 100%;
    background-position: center;
    opacity: 1;
    transform: translate3d(0, 0, 0) scaleY(1);
    transform-origin: 50% 100%;
    animation: none;
    will-change: opacity, transform;
}

html.has-custom-background body::before,
body.has-custom-background::before {
    display: none;
}

.container {
    position: relative;
    z-index: 3;
}

html.background-initial-load body::before {
    animation: backgroundFillIn 1.15s cubic-bezier(0.16, 1, 0.3, 1) both;
}

html.background-theme-leave body::before {
    animation: backgroundThemeLeave 0.28s cubic-bezier(0.55, 0.06, 0.68, 0.19) both;
}

html.background-theme-enter body::before {
    animation: backgroundThemeEnter 0.7s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes backgroundFillIn {
    0% {
        opacity: 0;
        transform: translate3d(0, 12%, 0) scaleY(0.18);
    }
    100% {
        opacity: 1;
        transform: translate3d(0, 0, 0) scaleY(1);
    }
}

@keyframes backgroundThemeLeave {
    0% {
        opacity: 1;
        transform: translate3d(0, 0, 0) scaleY(1);
    }
    100% {
        opacity: 0;
        transform: translate3d(0, 10%, 0) scaleY(0.18);
    }
}

@keyframes backgroundThemeEnter {
    0% {
        opacity: 0;
        transform: translate3d(0, 10%, 0) scaleY(0.18);
    }
    100% {
        opacity: 1;
        transform: translate3d(0, 0, 0) scaleY(1);
    }
}

@media (prefers-reduced-motion: reduce) {
    body::before,
    html.background-theme-leave body::before,
    html.background-theme-enter body::before {
        animation: none;
        opacity: 1;
        transform: none;
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleUp {
    from {
        opacity: 0;
        transform: scale(0.96);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 0 0 var(--accent-glow); }
    50% { box-shadow: 0 0 12px 4px var(--accent-glow); }
}

/* Main Layout Container */
.container {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

/* 1. Main Navigation Bar (Header) */
.app-navbar {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 10px 16px;
    background: transparent;
    border: 0;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-radius: 0;
    box-shadow: none;
    animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.navbar-spacer {
    min-width: 0;
}

.main-nav {
    justify-self: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 34px;
}

.main-nav-link {
    position: relative;
    appearance: none;
    border: 0;
    background: transparent;
    padding: 8px 2px 10px;
    color: var(--text-primary);
    cursor: pointer;
    font-family: 'Outfit', sans-serif;
    font-size: 1.08rem;
    font-weight: 700;
    letter-spacing: 0;
    line-height: 1;
    text-decoration: none;
    transition: color 0.22s ease, text-shadow 0.22s ease, transform 0.22s ease;
}

.main-nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 2px;
    border-radius: 999px;
    background: var(--accent-primary);
    box-shadow: 0 0 14px var(--accent-glow);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.24s ease;
}

.main-nav-link:hover,
.main-nav-link.active {
    color: var(--accent-primary);
    text-shadow: 0 0 16px var(--accent-glow);
}

.main-nav-link:hover {
    transform: translateY(-1px);
}

.main-nav-link:hover::after,
.main-nav-link.active::after {
    transform: scaleX(1);
}

.navbar-actions {
    justify-self: end;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Navbar Buttons */
.theme-toggle-btn,
.discord-btn,
.profile-btn,
.settings-btn {
    position: relative;
    width: auto;
    min-width: 42px;
    height: 42px;
    border-radius: 999px;
    background: rgba(5, 5, 8, 0.46);
    border: 1px solid rgba(255, 255, 255, 0.1);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.74);
    text-decoration: none;
    padding: 0 14px 0 40px;
    box-shadow: 0 10px 26px rgba(0, 0, 0, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    transition:
        color 0.25s cubic-bezier(0.2, 0.8, 0.2, 1),
        background-color 0.25s cubic-bezier(0.2, 0.8, 0.2, 1),
        border-color 0.25s cubic-bezier(0.2, 0.8, 0.2, 1),
        box-shadow 0.25s cubic-bezier(0.2, 0.8, 0.2, 1),
        transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.theme-toggle-btn > svg,
.discord-btn > svg,
.profile-btn > svg,
.settings-btn > svg {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.top-action-label {
    display: inline-block;
    color: currentColor;
    font-family: 'Outfit', sans-serif;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    line-height: 1;
}

.theme-toggle-btn .moon-icon,
.theme-toggle-btn .sun-icon,
.theme-toggle-btn .gray-icon,
.theme-toggle-btn .green-icon,
.theme-toggle-btn .sunset-icon,
.theme-toggle-btn .yellow-icon,
.theme-toggle-btn .purple-icon,
.theme-toggle-btn .midnight-icon {
    left: 24px;
}

.settings-btn svg {
    transform-origin: center;
}

.settings-btn.is-opening svg {
    animation: gearOpenSpin 0.46s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.settings-btn.is-open svg {
    transform: translateY(-50%) rotate(135deg);
}

.settings-btn.is-closing svg {
    animation: gearCloseSpin 0.34s cubic-bezier(0.55, 0.06, 0.68, 0.19) both;
}

@keyframes gearOpenSpin {
    0% { transform: translateY(-50%) rotate(0deg); }
    100% { transform: translateY(-50%) rotate(135deg); }
}

@keyframes gearCloseSpin {
    0% { transform: translateY(-50%) rotate(135deg); }
    100% { transform: translateY(-50%) rotate(0deg); }
}

.theme-toggle-btn:hover,
.discord-btn:hover,
.profile-btn:hover,
.settings-btn:hover {
    background: color-mix(in srgb, var(--accent-primary) 16%, rgba(5, 5, 8, 0.58));
    color: #ffffff;
    transform: translateY(-2px);
    border-color: color-mix(in srgb, var(--accent-primary) 42%, rgba(255, 255, 255, 0.16));
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.24), 0 0 24px var(--accent-glow);
}

.theme-toggle-btn:active,
.discord-btn:active,
.profile-btn:active,
.settings-btn:active {
    transform: translateY(0);
}

html[data-theme="light"] .main-nav-link,
html[data-theme="gray"] .main-nav-link {
    color: rgba(255, 255, 255, 0.88);
}

html[data-theme="light"] .main-nav-link:hover,
html[data-theme="light"] .main-nav-link.active,
html[data-theme="gray"] .main-nav-link:hover,
html[data-theme="gray"] .main-nav-link.active {
    color: #ffffff;
    text-shadow: 0 0 18px rgba(255, 255, 255, 0.24);
}

html[data-theme="light"] .theme-toggle-btn,
html[data-theme="light"] .discord-btn,
html[data-theme="light"] .profile-btn,
html[data-theme="light"] .settings-btn,
html[data-theme="gray"] .theme-toggle-btn,
html[data-theme="gray"] .discord-btn,
html[data-theme="gray"] .profile-btn,
html[data-theme="gray"] .settings-btn {
    color: rgba(255, 255, 255, 0.78);
    background: rgba(5, 5, 8, 0.48);
    border-color: rgba(255, 255, 255, 0.12);
}

html[data-theme="light"] .theme-toggle-btn:hover,
html[data-theme="light"] .discord-btn:hover,
html[data-theme="light"] .profile-btn:hover,
html[data-theme="light"] .settings-btn:hover,
html[data-theme="gray"] .theme-toggle-btn:hover,
html[data-theme="gray"] .discord-btn:hover,
html[data-theme="gray"] .profile-btn:hover,
html[data-theme="gray"] .settings-btn:hover {
    color: #ffffff;
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.24), 0 0 18px rgba(255, 255, 255, 0.16);
}

/* 2. Dashboard Title Block */
.dashboard-header {
    text-align: center;
    margin-top: 10px;
    animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) 0.1s forwards;
    opacity: 0;
}

.dashboard-title {
    font-family: 'Outfit', sans-serif;
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.dashboard-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* 3. Main Menu Card container */
.menu-container {
    position: relative;
    z-index: 1;
    padding: 8px 0;
    width: 100%;
    flex: 1;
    animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) 0.2s forwards;
    opacity: 0;
}

/* Footer styling */
.footer {
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.75rem;
    padding: 58px 0 150px;
    margin-top: 48px;
    border-top: 1px solid var(--border-color);
}

html[data-theme="light"] .footer,
html[data-theme="gray"] .footer {
    color: rgba(255, 255, 255, 0.54);
    border-top-color: rgba(255, 255, 255, 0.08);
}

/* Webkit Scrollbars */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--border-color-hover);
    border-radius: 8px;
    border: 2px solid var(--bg-primary);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* ==========================================
   4. Re-Engineered Settings Popup Overlay
   ========================================== */
.settings-popup-overlay {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    background: rgba(0, 0, 0, 0.65);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    box-sizing: border-box;
    overflow-y: auto;
    overflow-x: hidden;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.settings-popup-overlay.drawer-open {
    opacity: 1;
    pointer-events: auto;
}

.settings-popup-overlay.drawer-closing {
    opacity: 0;
    pointer-events: none;
}

.settings-popup-container {
    background: var(--bg-secondary);
    border-radius: 24px;
    width: 820px;
    max-width: 92vw;
    height: 580px;
    max-height: 85vh;
    max-height: 85dvh;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl), 0 0 40px var(--accent-glow);
    display: flex;
    flex-direction: row;
    overflow: hidden;
    min-height: 0;
    transform: scale(0.95) translateY(12px);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.settings-popup-overlay.drawer-open .settings-popup-container {
    transform: scale(1) translateY(0);
}

.settings-popup-overlay.drawer-closing .settings-popup-container {
    transform: scale(0.95) translateY(12px);
    transition: transform 0.25s ease-in;
}

.settings-sidebar {
    width: 240px;
    background: var(--bg-tertiary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    min-height: 0;
    padding: 24px 18px;
}

.settings-sidebar-header {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.settings-gear-icon {
    transform-origin: center;
    color: var(--accent-primary);
    filter: drop-shadow(0 0 6px var(--accent-glow));
}

.settings-sidebar-header h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.15rem;
    font-weight: 800;
    margin: 0;
    letter-spacing: -0.02em;
}

.settings-tabs {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 20px;
}

.settings-tab-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 12px;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 700;
    text-align: left;
    cursor: pointer;
    transition: all 0.22s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.settings-tab-btn svg {
    color: var(--text-tertiary);
    transition: color 0.22s ease;
}

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

.settings-tab-btn:hover svg {
    color: var(--text-secondary);
}

.settings-tab-btn.active {
    background: var(--active-bg);
    border-color: var(--active-border);
    color: var(--active-text);
    box-shadow: 0 4px 14px var(--accent-glow);
}

.settings-tab-btn.active svg {
    color: var(--active-text);
}

/* Settings Main Right Content Area */
.settings-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
    padding: 24px 28px;
    position: relative;
    overflow: hidden;
    background: var(--bg-secondary);
}

.settings-top-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--bg-tertiary);
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    transition: all 0.2s ease;
    z-index: 10;
}

.settings-top-close:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
    transform: scale(1.06);
}

.settings-top-close svg {
    width: 16px;
    height: 16px;
}

/* Scrollable tabs content container */
.settings-tab-content {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    display: none;
    padding-right: 6px;
    margin-bottom: 74px;
}

.settings-tab-content.active {
    display: flex;
    flex-direction: column;
    gap: 18px;
    animation: fadeInTab 0.25s ease-out;
}

@keyframes fadeInTab {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Modular Settings Card */
.settings-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 18px;
}

.settings-card h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 0.82rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0 0 14px 0;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border-left: 3px solid var(--accent-primary);
    padding-left: 10px;
}

/* Settings Item Layout */
.setting-item {
    padding-bottom: 14px;
    margin-bottom: 14px;
    border-bottom: 1px solid var(--border-color);
}

.setting-item.no-border {
    padding-bottom: 0;
    margin-bottom: 0;
    border-bottom: none;
}

/* Description Text inside settings */
.info-text {
    font-size: 0.74rem;
    color: var(--text-secondary);
    margin-top: 6px;
    line-height: 1.45;
}

/* Language Chips (Pill Selector) */
.language-chips {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.lang-chip {
    padding: 10px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-secondary);
    font-weight: 700;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
    user-select: none;
    text-align: center;
}

.lang-chip:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border-color-hover);
    transform: translateY(-1px);
}

.lang-chip.active {
    background: var(--active-bg);
    border-color: var(--active-border);
    color: var(--active-text);
    box-shadow: 0 4px 12px var(--accent-glow);
}

/* Custom Switches & Sliders */
/* iOS-style toggle switches inside row */
.switch-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-direction: row-reverse;
    gap: 16px;
    width: 100%;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 0.88rem;
    font-weight: 700;
    user-select: none;
}

.switch-label input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 44px;
    height: 24px;
    background-color: var(--switch-off-bg);
    border-radius: 12px;
    position: relative;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    border: 1px solid var(--switch-off-border);
    flex-shrink: 0;
}

.switch-label input[type="checkbox"]:checked {
    background-color: var(--switch-on-bg);
    border-color: var(--switch-on-border);
    box-shadow: 0 2px 10px var(--accent-glow);
}

.switch-label input[type="checkbox"]::before {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background-color: var(--switch-off-thumb);
    top: 2px;
    left: 2px;
    transition: all 0.28s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.12);
}

.switch-label input[type="checkbox"]:checked::before {
    transform: translateX(20px);
    background-color: var(--switch-on-thumb);
}

/* Range sliders */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: var(--bg-hover);
    border-radius: 4px;
    outline: none;
    transition: background 0.3s;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent-primary);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
    transition: transform 0.12s, background 0.2s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.22);
}

input[type="range"]:disabled::-webkit-slider-thumb {
    background: var(--text-tertiary);
    cursor: not-allowed;
}

/* Custom resolution fields */
.resolution-row {
    display: flex;
    gap: 12px;
    margin-top: 10px;
}

.resolution-input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
}

.resolution-input-group label {
    font-size: 0.74rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.resolution-input-group input {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 10px 14px;
    color: var(--text-primary);
    font-family: monospace;
    font-size: 0.92rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.resolution-input-group input:focus {
    background: var(--bg-secondary);
    border-color: var(--accent-primary);
    outline: none;
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Stretch slider details */
.stretch-slider-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 10px;
}

.stretch-slider-group label {
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.stretch-percent-badge {
    color: var(--accent-primary);
    font-weight: 800;
    font-size: 0.88rem;
}

.combo-warning {
    margin-top: 10px;
    padding: 10px 14px;
    border-left: 3px solid var(--accent-primary);
    border-radius: 12px;
    background: color-mix(in srgb, var(--accent-primary) 8%, transparent);
}

/* Saturation presets */
.saturation-preset-row {
    margin-top: 10px;
}

.saturation-preset-buttons {
    display: flex;
    gap: 8px;
}

.saturation-preset-btn {
    flex: 1;
    padding: 10px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-secondary);
    font-weight: 700;
    font-size: 0.78rem;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
    text-align: center;
}

.saturation-preset-btn:hover:not(:disabled) {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.saturation-preset-btn.active:not(:disabled) {
    background: var(--active-bg);
    border-color: var(--active-border);
    color: var(--active-text);
    box-shadow: 0 4px 12px var(--accent-glow);
}

.saturation-preset-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

/* Reset / Action Buttons inside popup */
.reset-res-btn,
.reset-stretch-btn,
.reset-mapping-btn,
.reset-save-popup-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 10px 18px;
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 700;
    font-size: 0.8rem;
    margin-top: 12px;
    transition: all 0.2s ease;
    width: auto;
}

.reset-res-btn:hover,
.reset-stretch-btn:hover,
.reset-mapping-btn:hover,
.reset-save-popup-btn:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.reset-save-popup-btn {
    width: 100%;
}

/* Resolution Shortcuts list */
.resolution-shortcuts {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 12px 0;
}

.res-shortcut-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px 12px;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.72rem;
    font-weight: 700;
    transition: all 0.2s ease;
}

.res-shortcut-btn:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
    color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: 0 3px 8px var(--accent-glow);
}

/* Key mappings with keycap physical design */
.mapping-container {
    display: flex;
    justify-content: center;
    width: 100%;
    margin-top: 12px;
}

.mapping-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    width: 100%;
    max-width: 320px;
}

.mapping-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: center;
}

.mapping-item label {
    font-size: 0.8rem;
    font-weight: 800;
    color: var(--text-secondary);
}

.key-input {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-bottom: 3px solid var(--border-color-hover);
    border-radius: 12px;
    padding: 10px 4px;
    color: var(--text-primary);
    text-align: center;
    font-weight: 800;
    font-size: 1.15rem;
    transition: all 0.15s cubic-bezier(0.2, 0.8, 0.2, 1);
    width: 56px;
    height: 56px;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.key-input:hover {
    background: var(--bg-hover);
    transform: translateY(-1px);
    border-bottom-width: 4px;
}

.key-input:focus {
    background: var(--bg-secondary);
    border-color: var(--accent-primary);
    border-bottom-width: 1px;
    transform: translateY(2px);
    outline: none;
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Settings Modal Footer sticky bottom */
.settings-popup-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 76px;
    padding: 18px 28px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    align-items: center;
    background: var(--bg-secondary);
    flex-shrink: 0;
    z-index: 5;
}

.settings-cancel-btn,
.settings-save-btn {
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 700;
    cursor: pointer;
    border: none;
    font-size: 0.84rem;
    transition: all 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.settings-save-btn {
    background: var(--active-bg);
    color: var(--active-text);
    border: 1px solid var(--active-border);
    box-shadow: 0 4px 14px var(--accent-glow);
}

.settings-save-btn:hover {
    transform: translateY(-2px);
    background: var(--accent-secondary);
    border-color: var(--accent-secondary);
    box-shadow: 0 6px 18px var(--accent-glow);
}

.settings-cancel-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.settings-cancel-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateY(-2px);
    border-color: var(--border-color-hover);
}

/* Dark mode overrides and optimizations */
html.dark-mode .lang-chip.active {
    box-shadow: 0 0 0 1px var(--active-ring), 0 6px 16px var(--accent-glow);
    background: var(--active-bg);
    border-color: var(--active-border);
    color: var(--active-text);
}

html.dark-mode .switch-label input[type="checkbox"]:checked {
    box-shadow: 0 0 0 1px var(--active-ring), 0 4px 12px var(--accent-glow);
    background-color: var(--switch-on-bg);
    border-color: var(--switch-on-border);
}

html.dark-mode .switch-label input[type="checkbox"]:checked::before {
    background-color: var(--switch-on-thumb);
}

/* Strong dark-mode switch contrast (OFF vs ON) */
html.dark-mode .switch-label input[type="checkbox"] {
    background-color: var(--switch-off-bg) !important;
    border-color: var(--switch-off-border) !important;
}

html.dark-mode .switch-label input[type="checkbox"]::before {
    background-color: var(--switch-off-thumb) !important;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.35) !important;
}

html.dark-mode .switch-label input[type="checkbox"]:checked {
    background-color: var(--switch-on-bg) !important;
    border-color: var(--switch-on-border) !important;
    box-shadow: 0 0 0 1px var(--active-ring), 0 6px 14px var(--accent-glow) !important;
}

html.dark-mode .switch-label input[type="checkbox"]:checked::before {
    background-color: var(--switch-on-thumb) !important;
}

html.dark-mode .saturation-preset-btn.active:not(:disabled) {
    box-shadow: 0 0 0 1px var(--active-ring), 0 6px 14px var(--accent-glow);
    background: var(--active-bg);
    border-color: var(--active-border);
    color: var(--active-text);
}

html.dark-mode .settings-save-btn,
html.dark-mode .settings-save-btn:hover {
    box-shadow: 0 0 0 1px var(--active-ring), 0 8px 18px var(--accent-glow);
}

.font-selector-wrap {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 320px;
}

.font-selector-label {
    font-size: 0.76rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.font-selector {
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: 12px;
    padding: 10px 14px;
    font-size: 0.88rem;
    font-weight: 700;
    outline: none;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: border-color 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease;
}

.font-selector:hover {
    border-color: var(--border-color-hover);
}

.font-selector:focus {
    border-color: var(--active-border);
    box-shadow: 0 0 0 1px var(--active-ring), var(--shadow-md);
}

/* ==========================================
   6. Responsiveness
   ========================================== */
@media (max-width: 768px) {
    .settings-popup-overlay {
        align-items: flex-start;
        padding: 12px 0;
    }

    .container {
        padding: 16px;
        gap: 20px;
    }
    
    .app-navbar {
        padding: 10px 12px;
        grid-template-columns: auto;
        justify-items: center;
        row-gap: 12px;
    }

    .navbar-spacer {
        display: none;
    }

    .main-nav {
        gap: 26px;
        grid-row: 1;
    }

    .main-nav-link {
        font-size: 1rem;
    }

    .navbar-actions {
        grid-row: 2;
        justify-self: center;
        gap: 8px;
    }

    .theme-toggle-btn,
    .discord-btn,
    .profile-btn,
    .settings-btn {
        height: 40px;
        padding: 0 12px 0 38px;
    }

    .top-action-label {
        font-size: 0.72rem;
    }

    .theme-toggle-btn .moon-icon,
    .theme-toggle-btn .sun-icon,
    .theme-toggle-btn .gray-icon,
    .theme-toggle-btn .green-icon,
    .theme-toggle-btn .sunset-icon,
    .theme-toggle-btn .yellow-icon,
    .theme-toggle-btn .purple-icon,
    .theme-toggle-btn .midnight-icon {
        left: 22px;
    }
    
    .dashboard-title {
        font-size: 1.75rem;
    }
    
    .settings-popup-container {
        flex-direction: column;
        width: 95vw;
        max-width: 520px;
        height: 88vh;
        height: 88dvh;
        max-height: none;
        border-radius: 20px;
        margin: auto 0;
    }
    
    .settings-sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 16px 20px 12px 20px;
    }
    
    .settings-sidebar-header {
        padding-bottom: 8px;
    }
    
    .settings-tabs {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        overflow: visible;
        gap: 8px;
        margin-top: 10px;
        width: 100%;
    }
    
    .settings-tab-btn {
        width: 100%;
        min-height: 38px;
        padding: 8px 10px;
        white-space: nowrap;
        font-size: 0.76rem;
        line-height: 1;
        min-width: 0;
        justify-content: center;
        gap: 7px;
        overflow: hidden;
    }

    .settings-tab-btn svg {
        flex: 0 0 17px;
        width: 17px;
        height: 17px;
    }

    .settings-tab-btn span {
        min-width: 0;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .settings-main {
        padding: 16px 20px;
        min-height: 0;
    }
    
    .settings-tab-content {
        margin-bottom: 66px;
    }
    
    .settings-popup-footer {
        padding: 10px 20px;
        height: 64px;
        border-radius: 0 0 20px 20px;
    }
}

@media (max-width: 480px) {
    .settings-popup-overlay {
        padding: 10px 0;
    }

    .theme-toggle-btn,
    .discord-btn,
    .profile-btn,
    .settings-btn {
        width: 42px;
        padding: 0;
    }

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

    .theme-toggle-btn > svg,
    .discord-btn > svg,
    .profile-btn > svg,
    .settings-btn > svg,
    .theme-toggle-btn .moon-icon,
    .theme-toggle-btn .sun-icon,
    .theme-toggle-btn .gray-icon,
    .theme-toggle-btn .green-icon,
    .theme-toggle-btn .sunset-icon,
    .theme-toggle-btn .yellow-icon,
    .theme-toggle-btn .purple-icon,
    .theme-toggle-btn .midnight-icon {
        left: 50%;
    }

    .discord-btn > svg,
    .profile-btn > svg,
    .settings-btn > svg {
        transform: translate(-50%, -50%);
    }

    .settings-popup-container {
        width: 98vw;
        height: 94vh;
        height: 94dvh;
        border-radius: 16px;
        margin: auto 0;
    }

    .settings-sidebar {
        padding: 14px 14px 10px 14px;
    }

    .settings-sidebar-header {
        padding-bottom: 6px;
    }

    .settings-sidebar-header h2 {
        font-size: 1rem;
    }

    .settings-tabs {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 7px;
    }

    .settings-tab-btn {
        min-height: 36px;
        font-size: 0.68rem;
        padding: 8px 7px;
        border-radius: 10px;
    }
    
    .settings-popup-footer {
        border-radius: 0 0 16px 16px;
        padding: 10px 16px;
    }

    .settings-cancel-btn,
    .settings-save-btn {
        padding: 10px 16px;
        font-size: 0.8rem;
        flex: 1;
        text-align: center;
    }
    
    .mapping-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 100%;
        gap: 8px;
    }
    
    .key-input {
        width: 48px;
        height: 48px;
        font-size: 1rem;
    }
}