:root {
    --bg-gradient: linear-gradient(180deg, #c4c6c8 0%, #babdc1 60%, #afbbcb 85%, #9ca6b5 100%);
    --card-bg: rgba(255, 255, 255, 0.45);
    --card-bg-hover: rgba(255, 255, 255, 0.55);
    --card-text: #2d3436;
    --card-border: rgba(0, 0, 0, 0.08);
    --button-bg: rgba(255, 255, 255, 0.35);
    --button-hover: rgba(255, 255, 255, 0.5);
    --text-main: #2d3436;
    --text-sub: #636e72;
    --text-muted: #b2bec3;
    --accent-primary: #667eea;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.15);
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

.dark-mode {
    --bg-gradient: linear-gradient(135deg, #080615 0%, #0d0b20 30%, #07160f 60%, #12121f 100%);
    --card-bg: rgba(255, 255, 255, 0.08);
    --card-bg-hover: rgba(255, 255, 255, 0.12);
    --card-text: #ffffff;
    --card-border: rgba(255, 255, 255, 0.08);
    --button-bg: rgba(255, 255, 255, 0.06);
    --button-hover: rgba(255, 255, 255, 0.12);
    --text-main: #ffffff;
    --text-sub: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.4);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 20px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    min-height: 100vh;
    color: var(--text-main);
    background: var(--bg-gradient);
    transition: background 0.5s ease, color 0.5s ease;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* -------------------------
   BACKGROUND EFFECTS
-------------------------- */
.aurora {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -5;
    background: linear-gradient(120deg, #00ff88, #667eea, #ff0080, #00d2ff, #00ff88);
    background-size: 400% 400%;
    animation: aurora 20s ease infinite;
    filter: blur(80px);
    opacity: 0.55;
    will-change: transform;
}

@keyframes aurora {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Reduce blur on small screens — major GPU savings, visually identical */
@media (max-width: 640px) {
    .aurora,
    .blob {
        filter: blur(40px);
    }
}

.blob {
    position: fixed;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.45;
    animation: float 20s infinite alternate ease-in-out;
    mix-blend-mode: screen;
    z-index: -4;
    will-change: transform;
}

.blob-1 { background: #00ff88; top: -10%; left: -10%; animation-duration: 25s; }
.blob-2 { background: #ff0080; bottom: -10%; right: -10%; animation-duration: 30s; animation-delay: -5s; }
.blob-3 { background: #00d2ff; top: 40%; left: 30%; width: 300px; height: 300px; animation-duration: 20s; animation-delay: -2s; }

@keyframes float {
    0% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(50px, 100px) rotate(120deg); }
    66% { transform: translate(-50px, 50px) rotate(240deg); }
    100% { transform: translate(0, 0) rotate(360deg); }
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 3px,
        rgba(0, 0, 0, 0.035) 3px,
        rgba(0, 0, 0, 0.035) 5px
    );
    mix-blend-mode: normal;
    opacity: 0.25;
}

.dark-mode body::before {
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 3px,
        rgba(255, 255, 255, 0.04) 3px,
        rgba(255, 255, 255, 0.04) 5px
    );
}

.no-aurora .aurora,
.no-aurora .blob {
    display: none !important;
}

/* Simple theme — solid background, no gradient, no animations */
html.no-aurora body {
    background-color: #d4d6da !important;
    background-image: none !important;
    transition: none !important;
}

html.dark-mode.no-aurora body {
    background-color: #232336 !important;
    background-image: none !important;
}

/* Simple theme scanlines — no overlay blend, just subtle transparency */
html.no-aurora body::before,
html.dark-mode.no-aurora body::before {
    mix-blend-mode: normal !important;
    opacity: 0.12 !important;
}

/* Minimal theme — zero effects, maximum performance */
html.minimal body {
    background-color: #c4c6c8 !important;
    background-image: none !important;
    transition: none !important;
}

html.dark-mode.minimal body {
    background-color: #0d0d1a !important;
    background-image: none !important;
}

html.minimal body::before {
    display: none !important;
}

html.minimal .glass-card {
    background: rgba(255, 255, 255, 0.85) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    box-shadow: none !important;
    border-color: rgba(0, 0, 0, 0.1) !important;
    border-radius: 8px !important;
}

html.dark-mode.minimal .glass-card {
    background: rgba(255, 255, 255, 0.08) !important;
    border-color: rgba(255, 255, 255, 0.08) !important;
}

html.minimal .gd-btn,
html.minimal .gd-select-trigger,
html.minimal .gd-input,
html.minimal .gd-toggle-group {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    box-shadow: none !important;
    border-radius: 6px !important;
}

html.minimal .tool-button {
    backdrop-filter: none !important;
    box-shadow: none !important;
}

html.minimal .aurora,
html.minimal .blob {
    display: none !important;
}

/* Pause continuous animations when tab is hidden */
html.paused .aurora,
html.paused .blob,
html.paused .quote-text {
    animation-play-state: paused;
}

html.paused .live-indicator {
    animation: none;
}

/* -------------------------
   TRANSITION OVERLAY
-------------------------- */
.transition-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--bg-gradient);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity;
    contain: paint;
}

.transition-overlay.active {
    opacity: 1;
    pointer-events: all;
}

/* -------------------------
   LAYOUT
-------------------------- */
.dashboard {
    max-width: 720px;
    margin: 0 auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    animation: fadeInUp 0.8s ease forwards;
}

body.transitioning .dashboard,
body.transitioning .dashboard-header,
body.transitioning .dashboard-footer {
    animation: none;
}

/* -------------------------
   HEADER
-------------------------- */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    animation: fadeInDown 0.6s ease 0.1s both;
}

.greeting {
    display: flex;
    align-items: center;
    gap: 10px;
}

.greeting-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: -0.02em;
}

.theme-btn {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 7px;
    border-radius: 50%;
    font-size: 1.0rem;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--text-main);
}

.theme-btn:hover {
    transform: scale(1.1) rotate(15deg);
    background: var(--card-bg-hover);
    box-shadow: var(--shadow-md);
}

/* -------------------------
   GLASS CARD
-------------------------- */
.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow-md);
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.glass-card:hover {
    box-shadow: var(--shadow-lg);
}

/* Performance: disable expensive blur during resize */
.glass-card.resizing {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}

/* -------------------------
   FOOTER
-------------------------- */
.dashboard-footer {
    text-align: center;
    padding: 40px 0 12px;
    animation: fadeIn 1s ease 0.6s both;
}

.footer-logo {
    max-height: 22px;
    width: auto;
    display: block;
    margin: 0 auto 8px;
    opacity: 0.75;
    filter: drop-shadow(0 2px 6px rgba(0,0,0,0.15));
    transition: opacity var(--transition-base);
}

.footer-logo:hover {
    opacity: 1;
}

.version-text {
    display: inline-block;
    font-size: 0.675rem;
    color: var(--text-main);
    font-weight: 400;
    letter-spacing: 0.05em;
    background: rgba(0,0,0,0.06);
    padding: 3px 12px;
    border-radius: 8px;
}

.dark-mode .version-text {
    background: rgba(255,255,255,0.06);
}

/* -------------------------
   FORM ELEMENTS
-------------------------- */
.gd-input {
    width: 100%;
    background: var(--button-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--text-main);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    resize: vertical;
    contain: layout paint;
}

.gd-input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

.gd-input::placeholder {
    color: var(--text-muted);
}

.gd-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--button-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    padding: 12px 18px;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    color: var(--text-main);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    backdrop-filter: blur(5px);
}

.gd-btn:hover {
    background: var(--button-hover);
    transform: translateY(-2px);
}

.gd-btn-primary {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #fff;
}

.gd-btn-primary:hover {
    background: #5a6fd6;
    border-color: #5a6fd6;
}

.gd-btn-block {
    width: 100%;
}

.gd-toggle-group {
    display: inline-flex;
    background: var(--button-bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--card-border);
    padding: 3px;
    gap: 3px;
}

.gd-toggle-btn {
    background: none;
    border: none;
    padding: 8px 18px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-sub);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
}

.gd-toggle-btn.active {
    background: var(--card-bg);
    color: var(--text-main);
    box-shadow: var(--shadow-sm);
}

.gd-toggle-btn:not(.active):hover {
    color: var(--text-main);
}

.gd-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-sub);
    margin-bottom: 8px;
}

.gd-check {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-main);
    cursor: pointer;
}

.gd-check input[type="checkbox"],
.gd-check input[type="radio"] {
    accent-color: var(--accent-primary);
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.gd-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-style: italic;
}

.gd-status {
    font-size: 0.85rem;
    margin-top: 8px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    display: none;
}

.gd-status.success {
    display: block;
    background: rgba(0, 230, 118, 0.15);
    color: #00c853;
    border: 1px solid rgba(0, 230, 118, 0.3);
}

.gd-status.error {
    display: block;
    background: rgba(255, 82, 82, 0.15);
    color: #ff5252;
    border: 1px solid rgba(255, 82, 82, 0.3);
}

/* -------------------------
   TOOL BUTTON
-------------------------- */
.tool-button {
    text-decoration: none;
    color: var(--text-main);
    background: var(--button-bg);
    padding: 16px 18px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-base);
    border: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(5px);
}

.tool-button .tool-emoji {
    font-size: 1.4rem;
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.tool-button:hover .tool-emoji {
    transform: scale(1.15);
}

.tool-button:hover {
    transform: translateY(-3px);
    background: var(--button-hover);
}

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

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-15px); }
    to { opacity: 1; transform: translateY(0); }
}

/* -------------------------
   MODAL COMPONENTS
-------------------------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    transition: opacity var(--transition-base);
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-overlay:not(.hidden) .modal {
    animation: modalIn 0.3s ease forwards;
}

@keyframes modalIn {
    from { transform: scale(0.92); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal {
    width: 100%;
    max-width: 400px;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--card-border);
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    line-height: 1;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-main);
}

.setting-row {
    margin-bottom: 20px;
}

.setting-row label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-sub);
    margin-bottom: 8px;
}

.toggle-group {
    display: inline-flex;
    background: var(--button-bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--card-border);
    padding: 3px;
    gap: 3px;
}

.unit-btn, .time-format-btn, .bg-theme-btn {
    background: none;
    border: none;
    padding: 8px 18px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-sub);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
}

.unit-btn.active, .time-format-btn.active, .bg-theme-btn.active {
    background: var(--card-bg);
    color: var(--text-main);
    box-shadow: var(--shadow-sm);
}

.unit-btn:not(.active):hover, .time-format-btn:not(.active):hover, .bg-theme-btn:not(.active):hover {
    color: var(--text-main);
}

/* -------------------------
   GD-SELECT — Custom Glass Dropdown
   Replaces native <select> with themed glass dropdown
-------------------------- */
.gd-select-wrapper {
    position: relative;
    width: 100%;
}

.gd-select-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 6px 10px;
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    background: var(--button-bg);
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.85rem;
    cursor: pointer;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    text-align: left;
    gap: 8px;
}

.gd-select-trigger:hover {
    background: var(--card-bg-hover);
    box-shadow: var(--shadow-sm);
}

.gd-select-trigger:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.15);
}

.gd-select-trigger .gd-select-arrow {
    flex-shrink: 0;
    width: 12px;
    height: 12px;
    opacity: 0.6;
    transition: transform 0.2s;
}

.gd-select-trigger.open .gd-select-arrow {
    transform: rotate(180deg);
}

.gd-select-trigger .gd-select-value {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.gd-select-panel {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    z-index: 500;
    background: rgba(248, 249, 252, 0.7);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    padding: 4px;
    opacity: 0;
    transform: translateY(-6px);
    pointer-events: none;
    transition: opacity 0.2s, transform 0.2s;
    max-height: 260px;
    overflow-y: auto;
}

.dark-mode .gd-select-panel {
    background: rgba(98, 98, 100, 0.774);
}

.gd-select-panel.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

.gd-select-option {
    display: block;
    width: 100%;
    padding: 8px 12px;
    border: none;
    border-radius: 6px;
    background: none;
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.85rem;
    text-align: left;
    cursor: pointer;
    transition: background 0.15s;
}

.gd-select-option:hover {
    background: var(--card-bg-hover);
}

.gd-select-option.active {
    background: var(--accent-primary);
    color: #fff;
}

.gd-select-option.highlight {
    outline: 2px solid var(--accent-primary);
    outline-offset: -2px;
    background: var(--card-bg-hover);
}

/* Hide the native select but keep it for form value sync */
select.gd-select {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

/* Prevent layout shift — wrapper sizes from trigger */
.gd-select-wrapper .gd-select-original {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 0;
    pointer-events: none;
}

/* -------------------------
   SETTINGS DROPDOWN
-------------------------- */
.settings-fab {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 1001;
}

.settings-dropdown {
    position: fixed;
    top: 64px;
    right: 16px;
    width: 280px;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 16px;
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: all var(--transition-fast);
}

.settings-dropdown:not(.hidden) {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

.settings-dropdown .setting-row {
    margin-bottom: 0;
}

.settings-dropdown .setting-row label {
    margin-bottom: 8px;
}

.settings-dropdown .bg-theme-btn {
    padding: 8px 11px;
    font-size: 0.8rem;
}

/* -------------------------
   UTILITIES
-------------------------- */
.hidden {
    display: none !important;
}

/* -------------------------
   RESPONSIVE
-------------------------- */
@media (max-width: 640px) {
    .dashboard {
        padding: 16px;
        gap: 14px;
    }
    .settings-fab {
        top: 12px;
        right: 12px;
    }
    .settings-dropdown {
        top: 56px;
        right: 12px;
    }
}