/* ==========================================================================
   Ugauga Studio - Dual Theme System (Light Editorial Stone + Dark Deep Indigo)
   ========================================================================== */

:root {
    /* LIGHT MODE (Default: Warm Architectural Stone) */
    --ug-bg: #fcfbfa;
    --ug-surface: #ffffff;
    --ug-surface-muted: #f5f4ef;
    --ug-surface-warm: #eceae3;
    --ug-ink: #141518;
    --ug-ink-muted: #57534e;
    --ug-ink-subtle: #8a867f;
    --ug-border: #e7e5df;
    --ug-border-hover: #c9c6bc;
    --ug-card-bg: #ffffff;
    --ug-card-border: #e7e5df;
    --ug-btn-primary-bg: #141518;
    --ug-btn-primary-text: #ffffff;
    --ug-btn-primary-hover: #26272b;
    --ug-pill-bg: #f2f0ea;
    --ug-pill-text: #57534e;
    --ug-pill-border: #e2ded5;
    --ug-input-bg: #ffffff;
    --ug-mockup-bar-bg: #f7f6f2;
    --font-heading: 'Syne', -apple-system, sans-serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

html.dark {
    /* DARK MODE (Deep Blue / Navy Slate & Luminous Indigo) */
    --ug-bg: #030712;
    --ug-surface: #0b1120;
    --ug-surface-muted: #070d1e;
    --ug-surface-warm: #0f172a;
    --ug-ink: #f8fafc;
    --ug-ink-muted: #94a3b8;
    --ug-ink-subtle: #64748b;
    --ug-border: rgba(99, 102, 241, 0.2);
    --ug-border-hover: rgba(99, 102, 241, 0.45);
    --ug-card-bg: rgba(13, 19, 34, 0.8);
    --ug-card-border: rgba(99, 102, 241, 0.25);
    --ug-btn-primary-bg: #4f46e5;
    --ug-btn-primary-text: #ffffff;
    --ug-btn-primary-hover: #4338ca;
    --ug-pill-bg: rgba(99, 102, 241, 0.12);
    --ug-pill-text: #a5b4fc;
    --ug-pill-border: rgba(99, 102, 241, 0.28);
    --ug-input-bg: #0c1222;
    --ug-mockup-bar-bg: #0a0f1d;
}

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

html {
    font-family: var(--font-body);
    color: var(--ug-ink);
    background-color: var(--ug-bg);
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.25s ease, color 0.25s ease;
}

body {
    background-color: var(--ug-bg);
    color: var(--ug-ink);
    line-height: 1.65;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    transition: background-color 0.25s ease, color 0.25s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--ug-ink);
    line-height: 1.15;
    letter-spacing: -0.03em;
    font-weight: 700;
}

.font-mono {
    font-family: var(--font-mono);
}

a {
    color: inherit;
    text-decoration: none;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

img, svg {
    display: block;
    max-width: 100%;
}
button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* Logo Stretched 40% in Height (1.4x) */
.ug-logo {
    display: inline-flex;
    align-items: center;
    transform: scaleY(1.4);
    transform-origin: left center;
    transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.ug-logo:hover {
    transform: scaleY(1.43) scaleX(1.02);
}

/* Typewriter Effect as seen on asin24.com */
.ug-typewriter-cursor {
    display: inline-block;
    margin-left: 4px;
    font-weight: 300;
    color: var(--ug-ink);
    animation: ugBlinkCursor 0.85s infinite;
}

@keyframes ugBlinkCursor {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.ug-delayed-subtitle {
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.65s cubic-bezier(0.16, 1, 0.3, 1), transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}

.ug-delayed-subtitle.revealed {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* Layout Utilities */
.ug-container {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

@media (min-width: 640px) {
    .ug-container {
        padding-left: 2.5rem;
        padding-right: 2.5rem;
    }
}

/* Cards */
.ug-card {
    background: var(--ug-card-bg);
    border: 1px solid var(--ug-card-border);
    border-radius: 1.25rem;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

.ug-card:hover {
    border-color: var(--ug-border-hover);
    transform: translateY(-2px);
}

html:not(.dark) .ug-card:hover {
    box-shadow: 0 20px 40px -15px rgba(20, 21, 24, 0.06);
}

html.dark .ug-card:hover {
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6), 0 0 25px -5px rgba(99, 102, 241, 0.15);
}

/* Browser Mockup Frame */
.ug-browser-frame {
    border: 1px solid var(--ug-border);
    border-radius: 1rem;
    overflow: hidden;
    background: var(--ug-surface);
    transition: all 0.25s ease;
}

html:not(.dark) .ug-browser-frame {
    box-shadow: 0 25px 50px -12px rgba(20, 21, 24, 0.08);
}

html.dark .ug-browser-frame {
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6), 0 0 35px -5px rgba(99, 102, 241, 0.15);
}

.ug-browser-bar {
    background: var(--ug-mockup-bar-bg);
    border-bottom: 1px solid var(--ug-border);
    padding: 0.65rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.ug-dot {
    width: 10px;
    height: 10px;
    border-radius: 9999px;
    display: inline-block;
}

/* Buttons */
.ug-btn-primary {
    background-color: var(--ug-btn-primary-bg);
    color: var(--ug-btn-primary-text) !important;
    font-weight: 600;
    border-radius: 9999px;
    padding: 0.85rem 1.75rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.ug-btn-primary:hover {
    background-color: var(--ug-btn-primary-hover);
    transform: translateY(-1px);
}

html:not(.dark) .ug-btn-primary:hover {
    box-shadow: 0 10px 25px -8px rgba(20, 21, 24, 0.25);
}

html.dark .ug-btn-primary {
    box-shadow: 0 10px 25px -8px rgba(99, 102, 241, 0.5);
}

html.dark .ug-btn-primary:hover {
    box-shadow: 0 12px 30px -8px rgba(99, 102, 241, 0.7);
}

.ug-btn-outline {
    background-color: transparent;
    color: var(--ug-ink) !important;
    border: 1px solid var(--ug-border);
    font-weight: 600;
    border-radius: 9999px;
    padding: 0.85rem 1.75rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.ug-btn-outline:hover {
    border-color: var(--ug-ink);
    background-color: var(--ug-surface);
    transform: translateY(-1px);
}

/* Pills & Badges */
.ug-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    font-family: var(--font-mono);
    letter-spacing: -0.01em;
    background: var(--ug-pill-bg);
    color: var(--ug-pill-text);
    border: 1px solid var(--ug-pill-border);
}

.ug-live-dot {
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 9999px;
    background-color: #10b981;
}

/* Filter buttons */
.ug-filter-btn {
    padding: 0.45rem 1.15rem;
    border-radius: 9999px;
    font-size: 0.825rem;
    font-weight: 500;
    background: var(--ug-surface);
    border: 1px solid var(--ug-border);
    color: var(--ug-ink-muted);
    cursor: pointer;
    transition: all 0.15s ease;
}

.ug-filter-btn:hover {
    color: var(--ug-ink);
    border-color: var(--ug-border-hover);
}

.ug-filter-btn.active {
    background: var(--ug-ink);
    color: var(--ug-bg);
    border-color: var(--ug-ink);
}

/* FAQ Accordion */
.ug-faq-item {
    border: 1px solid var(--ug-border);
    border-radius: 1rem;
    background: var(--ug-surface);
    overflow: hidden;
    transition: all 0.2s ease;
}

.ug-faq-item:hover {
    border-color: var(--ug-border-hover);
}

.ug-faq-btn {
    width: 100%;
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-align: left;
    background: none;
    border: none;
    color: var(--ug-ink);
    font-weight: 600;
    font-size: 1.05rem;
    cursor: pointer;
    font-family: var(--font-heading);
}

.ug-faq-icon {
    transition: transform 0.25s ease;
    flex-shrink: 0;
    color: var(--ug-ink-muted);
}

.ug-faq-item.open .ug-faq-icon {
    transform: rotate(180deg);
}

.ug-faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 0 1.5rem;
    color: var(--ug-ink-muted);
    font-size: 0.95rem;
    line-height: 1.65;
}

.ug-faq-item.open .ug-faq-content {
    padding-bottom: 1.25rem;
}

/* Form Controls */
.ug-input, .ug-select, .ug-textarea {
    width: 100%;
    padding: 0.85rem 1.15rem;
    background: var(--ug-input-bg);
    border: 1px solid var(--ug-border);
    border-radius: 0.75rem;
    color: var(--ug-ink);
    outline: none;
    transition: all 0.2s ease;
}

.ug-input:focus, .ug-select:focus, .ug-textarea:focus {
    border-color: var(--ug-btn-primary-bg);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.ug-input::placeholder, .ug-textarea::placeholder {
    color: var(--ug-ink-subtle);
}

/* Calculator specific */
.ug-calc-card {
    background: var(--ug-surface);
    border: 1px solid var(--ug-border);
    border-radius: 1.5rem;
    padding: 2.25rem;
}

html:not(.dark) .ug-calc-card {
    box-shadow: 0 20px 45px -15px rgba(20, 21, 24, 0.05);
}

html.dark .ug-calc-card {
    box-shadow: 0 20px 45px -15px rgba(0, 0, 0, 0.6), 0 0 30px -5px rgba(99, 102, 241, 0.15);
}

.ug-calc-option {
    cursor: pointer;
    padding: 1rem;
    border-radius: 0.85rem;
    border: 1px solid var(--ug-border);
    background: var(--ug-surface-muted);
    transition: all 0.15s ease;
}

.ug-calc-option:hover {
    border-color: var(--ug-border-hover);
    background: var(--ug-surface);
}

.ug-calc-option.selected {
    border-color: var(--ug-btn-primary-bg);
    background: var(--ug-surface);
    box-shadow: 0 0 0 2px var(--ug-btn-primary-bg);
}

/* Theme Toggle Button */
.ug-theme-toggle {
    width: 38px;
    height: 38px;
    border-radius: 9999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--ug-border);
    background: var(--ug-surface);
    color: var(--ug-ink);
    cursor: pointer;
    transition: all 0.2s ease;
}

.ug-theme-toggle:hover {
    border-color: var(--ug-border-hover);
    background: var(--ug-surface-muted);
    transform: rotate(15deg);
}

/* Language Pill Button */
.ug-lang-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.35rem 0.65rem;
    border-radius: 9999px;
    font-family: var(--font-mono);
    font-size: 0.725rem;
    font-weight: 600;
    border: 1px solid var(--ug-border);
    background: var(--ug-surface);
    color: var(--ug-ink-muted);
    transition: all 0.2s ease;
}

.ug-lang-pill:hover {
    color: var(--ug-ink);
    border-color: var(--ug-border-hover);
}

@media (max-width: 640px) {
    .ug-calc-card {
        padding: 1.25rem;
    }
}