/* Load Inter font with better fallback */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap");

:root {
    /* Theme Colors */
    --primary-color: #2a313c; /* button/surface-high */
    --primary-hover: #343b47;
    --primary-light: rgba(255, 255, 255, 0.12);
    --accent-color: #313845;
    --accent-hover: #3a4350;

    --secondary-hover: #212834;

    /* Semantic colors - Modern Neutral */
    --success-color: #d1d5db;
    --success-hover: #f3f4f6;
    --error-color: #9ca3af;
    --error-hover: #d1d5db;
    --warning-color: #6b7280;
    --warning-hover: #9ca3af;

    /* Text colors - High Contrast */
    --text-primary: #f9fafb;
    --text-secondary: #e5e7eb;
    --text-tertiary: #d1d5db;
    --text-muted: #9ca3af;

    /* Background colors: background (darkest) → containers (lighter) → buttons (lightest) */
    --bg-primary: #0d0f12; /* page background */
    --bg-secondary: #14181e; /* container background */
    --bg-tertiary: #1b2129; /* elevated container */
    --bg-muted: #232934;
    --bg-overlay: rgba(255, 255, 255, 0.04);

    --bg-gradient-accent: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.06) 0%,
        rgba(255, 255, 255, 0.03) 100%
    );

    /* Border colors - Subtle */
    --border-primary: #374151;
    --border-secondary: #4b5563;
    --border-focus: var(--primary-color);
    --border-hover: #6b7280;

    /* Modern shadows with better depth */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.4), 0 1px 2px -1px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.6);

    /* Enhanced spacing scale */
    --space-px: 1px;
    --space-0-5: 0.125rem;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Modern border radius */
    --radius-xs: 0.125rem;
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-3xl: 1.5rem;
    --radius-full: 9999px;

    /* Typography using Inter with system fallbacks */
    --font-family:
        "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu",
        "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
    --font-mono:
        ui-monospace, SFMono-Regular, "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono",
        "Courier New", monospace;

    /* Modern font scale */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    --font-size-7xl: 4.5rem;

    /* Line heights */
    --leading-none: 1;
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;

    /* Font weights */
    --font-thin: 100;
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;
    --font-black: 900;

    /* Enhanced transitions */
    --transition-none: none;
    --transition-all: all 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-default: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 100ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* Easing curves */
    --ease-linear: linear;
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-family);
    font-weight: var(--font-normal);
    background: var(--bg-primary);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: var(--leading-normal);
    font-size: var(--font-size-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
}

/* Footer */
.site-footer {
    margin-top: auto;
    border-top: 1px solid var(--border-primary);
    background: var(--bg-primary);
}

.site-footer .footer-inner {
    max-width: 56rem;
    margin: 0 auto;
    padding: var(--space-6) var(--space-4);
    color: var(--text-secondary);
    display: flex;
    gap: var(--space-3);
    justify-content: center;
    align-items: center;
    font-size: var(--font-size-sm);
}

.site-footer .footer-brand {
    color: var(--text-primary);
    font-weight: var(--font-medium);
}

.site-footer .footer-sep {
    opacity: 0.6;
}

.site-footer a.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-default);
    display: inline-flex;
    align-items: center;
}

.site-footer a.footer-link:hover,
.site-footer a.footer-link:focus {
    color: var(--text-primary);
    text-decoration: underline;
    outline: none;
}

.site-footer .footer-link-icon {
    margin-left: 0.25rem;
    opacity: 0.9;
    width: 12px;
    height: 12px;
}

.container {
    max-width: 56rem;
    margin: 0 auto;
    padding: var(--space-8) var(--space-4);
    position: relative;
    flex: 1 0 auto;
}

.page {
    display: none;
    animation: fadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Main Page Styles */
header {
    text-align: center;
    margin-bottom: var(--space-12);
    color: var(--text-primary);
    padding: var(--space-16) var(--space-8);
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: none;
    border-radius: 0;
    box-shadow: none;
    position: relative;
    overflow: visible;
}

header::before {
    content: none;
}

header h1 {
    font-size: clamp(2rem, 6vw, 3.5rem);
    font-weight: var(--font-extrabold);
    line-height: var(--leading-tight);
    margin-bottom: var(--space-6);
    color: var(--text-primary);
    letter-spacing: -0.05em;
    background: linear-gradient(135deg, #fff 0%, #e5e7eb 50%, #d1d5db 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    font-weight: var(--font-light);
    line-height: var(--leading-relaxed);
    max-width: 36rem;
    margin: 0 auto;
    opacity: 0.9;
}

.search-container {
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: none;
    border-radius: 0;
    padding: 0;
    margin-bottom: var(--space-20);
    display: flex;
    gap: var(--space-4);
    align-items: stretch;
    box-shadow: none;
    position: relative;
    overflow: visible;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.search-container:hover,
.search-container:focus-within {
    transform: none;
    box-shadow: none;
}

.search-container::before {
    content: none;
}

/* (Removed shared accent overlay to make header/search match share/animation backgrounds) */

#question-input {
    flex: 1;
    padding: var(--space-3) var(--space-8);
    padding-right: 2.75rem; /* room for inline action button */
    border-radius: var(--radius-full);
    font-size: var(--font-size-lg);
    font-family: var(--font-family);
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    outline: none;
    transition: var(--transition-all);
    min-height: 3rem;
    border: none;
    box-shadow: var(--shadow-sm);
}

#question-input:focus {
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    box-shadow:
        0 0 0 3px var(--primary-light),
        var(--shadow-md);
}

/* Remove native appearance borders on some browsers */
#question-input {
    -webkit-appearance: none;
    appearance: none;
}

/* Inline action button inside input */
.input-group {
    position: relative;
    flex: 1;
    display: flex;
    width: 100%;
}

#ask-button.input-action {
    position: absolute;
    right: var(--space-2);
    top: 50%;
    transform: translateY(-50%);
    height: 2rem;
    width: 2rem;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: var(--bg-primary);
    color: var(--text-tertiary);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    z-index: 1;
    overflow: hidden;
}

#ask-button.input-action:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
}

#ask-button.input-action:focus {
    outline: none;
    box-shadow:
        0 0 0 3px var(--primary-light),
        var(--shadow-md);
    color: var(--text-primary);
}

#ask-button.input-action:disabled,
#ask-button.input-action.disabled {
    background: var(--bg-primary);
    color: var(--text-muted);
    cursor: not-allowed;
    box-shadow: none;
}

/* Keep input full width and make arrow animate inside only */
#question-input {
    width: 100%;
    display: block;
}

#ask-button.input-action svg {
    transition: transform var(--transition-default);
}

#ask-button.input-action:hover svg,
#ask-button.input-action:focus svg {
    transform: translateY(-1px);
}

/* Hide inline arrow when loading to show spinner only */
#ask-button.input-action.loading svg {
    opacity: 0;
}

#question-input::placeholder {
    color: var(--text-tertiary);
    font-weight: var(--font-light);
}

/* Removed input icon and wrapper for a simpler, pill-style field */

#ask-button:not(.input-action) {
    padding: var(--space-4) var(--space-6);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: var(--text-primary);
    border: none;
    border-radius: var(--radius-full);
    font-size: var(--font-size-base);
    font-weight: var(--font-semibold);
    font-family: var(--font-family);
    cursor: pointer;
    transition: var(--transition-all);
    min-height: 3rem;
    white-space: nowrap;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

#ask-button:not(.input-action):hover {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    transform: none;
    box-shadow: var(--shadow-md);
}

#ask-button:not(.input-action):focus {
    outline: none;
    box-shadow:
        0 4px 20px rgba(0, 0, 0, 0.3),
        0 0 0 3px var(--primary-light);
}

#ask-button:not(.input-action):active {
    transform: translateY(0) scale(0.98);
}

#ask-button:not(.input-action):disabled,
#ask-button:not(.input-action).disabled {
    opacity: 0.4;
    cursor: not-allowed;
    background: var(--bg-muted) !important;
    color: var(--text-muted) !important;
    transform: none !important;
    box-shadow: none !important;
}

#ask-button:not(.input-action).loading {
    position: relative;
    color: transparent;
}

#ask-button:not(.input-action).loading::after {
    content: "";
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 2px solid transparent;
    border-top: 2px solid #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* Animation Page Styles */
.browser-mockup {
    background: var(--bg-muted);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    margin-bottom: var(--space-12);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}

.browser-header {
    position: relative;
    background: var(--bg-secondary);
    padding: var(--space-3) var(--space-6);
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border-primary);
}

.browser-buttons {
    position: absolute;
    left: var(--space-6);
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    gap: var(--space-2);
}

.browser-button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.15);
}

.browser-button.red {
    background: #ff5f56;
}
.browser-button.yellow {
    background: #ffbd2e;
}
.browser-button.green {
    background: #27c93f;
}

.address-bar {
    background: var(--bg-secondary);
    padding: var(--space-2) var(--space-6);
    border-radius: var(--radius-full);
    border: 1px solid var(--border-primary);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    outline: none;
    user-select: none;
    pointer-events: none;
    margin: 0 auto;
    text-align: center;
    min-width: 14rem;
}

.browser-content {
    padding: var(--space-10);
    min-height: 25rem;
    background: var(--bg-secondary);
    /* Keep a fixed content width while staying responsive */
    width: 720px;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
}

.chat-interface {
    max-width: 42rem;
    margin: 0 auto;
}

.message-input-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-2xl);
    padding: var(--space-6) var(--space-8);
    margin-bottom: var(--space-8);
    position: relative;
    min-height: 5rem;
    display: flex;
    align-items: flex-start;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-all);
}

.message-input-container:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--border-hover);
}

.typing-cursor {
    color: var(--primary-color);
    font-size: var(--font-size-xl);
    animation: blink 1s infinite;
    margin-right: var(--space-1);
    font-weight: var(--font-medium);
}

@keyframes blink {
    0%,
    50% {
        opacity: 1;
    }
    51%,
    100% {
        opacity: 0;
    }
}

/* Moved from JS injection: input shake animation */
@keyframes shake {
    0%,
    100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-10px);
    }
    75% {
        transform: translateX(10px);
    }
}

.typed-text {
    font-size: var(--font-size-lg);
    line-height: var(--leading-relaxed);
    color: var(--text-primary);
    flex: 1;
    font-weight: var(--font-normal);
    /* Prevent long unbroken strings from expanding layout */
    overflow-wrap: anywhere;
    word-break: break-word;
}

.claude-message {
    margin-top: var(--space-8);
    animation: slideUp 0.6s var(--ease-out);
    /* Move visual bubble styles here so the arrow can be within the same backdrop-filtered box */
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.06) 0%,
        rgba(255, 255, 255, 0.03) 100%
    );
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: var(--text-primary);
    border-radius: var(--radius-2xl);
    position: relative;
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.3),
        0 2px 8px rgba(255, 255, 255, 0.06);
    padding: var(--space-6) var(--space-8);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translate3d(0, 1.5rem, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

.message-bubble {
    /* Now acts as content wrapper only */
    color: var(--text-primary);
}

.response-text {
    line-height: var(--leading-relaxed);
    font-size: var(--font-size-lg);
    font-weight: var(--font-normal);
    /* Prevent long unbroken strings from expanding layout */
    overflow-wrap: anywhere;
    word-break: break-word;
}

.final-message {
    text-align: center;
    background: var(--bg-primary);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: none;
    padding: var(--space-16) var(--space-8);
    border-radius: var(--radius-2xl);
    animation: fadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: none;
    position: relative;
    overflow: hidden;
}

.final-message h2 {
    color: var(--text-primary);
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-6);
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
}

.final-message p {
    color: var(--text-secondary);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-12);
    line-height: var(--leading-relaxed);
    font-weight: var(--font-medium);
    max-width: 36rem;
    margin-left: auto;
    margin-right: auto;
    letter-spacing: -0.01em;
}

.share-container {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-10);
    align-items: stretch;
}

.share-button {
    padding: var(--space-2) var(--space-5);
    background: var(--primary-color);
    color: var(--text-primary);
    border: none;
    border-radius: 9999px; /* pill */
    cursor: pointer;
    font-weight: var(--font-semibold);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    transition: var(--transition-all);
    min-height: 2.25rem;
    white-space: nowrap;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.share-button:hover {
    background: var(--primary-hover);
}

.share-button:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-light);
}

.share-button:active {
    transform: scale(0.98);
}

/* Share buttons header + layout */
.share-buttons {
    display: grid;
    gap: var(--space-3);
}

.share-buttons-title {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    text-align: center;
}

.share-buttons-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    justify-content: center;
}

/* All share buttons use the primary brand color for visual consistency */

#share-url {
    flex: 1;
    padding: var(--space-4) var(--space-6);
    border: none;
    border-radius: var(--radius-xl);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    transition: var(--transition-all);
    min-height: 3rem;
}

#share-url:focus {
    box-shadow: none;
    background: var(--bg-primary);
    outline: none;
}

#share-url:hover {
    background: var(--bg-tertiary);
    cursor: pointer;
}

#share-url:active {
    background: var(--bg-tertiary);
}

/* Copy button as icon-only dark button */
#copy-button {
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
    border: none;
    border-radius: var(--radius-sm); /* slightly rounded */
    cursor: pointer;
    transition: var(--transition-all);
    aspect-ratio: 1 / 1;
    min-height: 3rem; /* match input visual height */
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

#copy-button:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

#copy-button:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-light);
    color: var(--text-primary);
}

#copy-button:active {
    transform: scale(0.98);
}

/* Icon swapping based on state */
#copy-button .icon-check,
#copy-button .icon-x {
    display: none;
}

#copy-button.copied .icon-clipboard {
    display: none;
}

#copy-button.copied .icon-check {
    display: block;
}

#copy-button.error .icon-clipboard {
    display: none;
}

#copy-button.error .icon-x {
    display: block;
}

.action-buttons-container {
    margin-top: var(--space-8);
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

#claude-button,
#start-over-button {
    padding: var(--space-4) var(--space-8);
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-weight: var(--font-semibold);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: var(--transition-all);
    min-height: 3rem;
    white-space: nowrap;
    flex: 1;
    min-width: 12rem;
    max-width: 16rem;
}

#claude-button {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border-primary);
}

#claude-button:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-hover);
}

#claude-button:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-light);
    border-color: var(--primary-color);
}

#claude-button:active {
    transform: scale(0.98);
}

#start-over-button {
    background: var(--primary-color);
    color: var(--text-primary);
    border: none;
}

#start-over-button:hover {
    background: var(--primary-hover);
}

#start-over-button:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-light);
}

#start-over-button:active {
    transform: scale(0.98);
}

.typing-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    margin: var(--space-6) 0;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-2xl);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
    animation: fadeIn var(--transition-default) ease-in;
    backdrop-filter: blur(10px);
}

.typing-dots {
    display: flex;
    gap: var(--space-1);
}

.typing-dots span {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: var(--radius-full);
    background: var(--primary-color);
    animation: bounce 1.4s infinite both;
}

.typing-dots span:nth-child(2) {
    animation-delay: 0.16s;
}

.typing-dots span:nth-child(3) {
    animation-delay: 0.32s;
}

@keyframes bounce {
    0%,
    80%,
    100% {
        transform: scale3d(0.6, 0.6, 0.6);
        opacity: 0.4;
    }
    40% {
        transform: scale3d(1.1, 1.1, 1.1);
        opacity: 1;
    }
}

/* Performance optimizations */
.page,
.browser-mockup,
.claude-message,
.final-message,
.typing-indicator {
    will-change: transform, opacity;
}

.page.active {
    will-change: auto;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .typing-cursor {
        animation: none;
    }

    .typing-dots span {
        animation: none;
        opacity: 1;
    }

    .search-container:hover,
    .search-container:focus-within,
    #ask-button:hover,
    #copy-button:hover,
    .theme-toggle:hover,
    #question-input:focus {
        transform: none !important;
    }

    body::before {
        display: none;
    }
}

.hidden {
    display: none !important;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Responsive Design */
@media (max-width: 48rem) {
    /* Make browser container use most of the viewport width without scaling with content */
    .browser-mockup {
        width: calc(100vw - 2rem);
        max-width: 720px;
        margin-left: auto;
        margin-right: auto;
    }

    .browser-header {
        padding: var(--space-2) var(--space-4);
    }

    .browser-buttons {
        left: var(--space-4);
        gap: var(--space-1);
    }

    .browser-button {
        width: 10px;
        height: 10px;
    }

    .address-bar {
        padding: var(--space-1) var(--space-4);
        font-size: var(--font-size-xs);
        min-width: 10rem;
    }

    .container {
        padding: var(--space-6) var(--space-4);
    }

    header {
        margin-bottom: var(--space-12);
    }

    header h1 {
        font-size: var(--font-size-4xl);
        margin-bottom: var(--space-4);
    }

    .subtitle {
        font-size: var(--font-size-lg);
    }

    .search-container {
        flex-direction: column;
        gap: var(--space-6);
        padding: 0;
        margin-bottom: var(--space-12);
    }

    .search-container:hover,
    .search-container:focus-within {
        transform: none;
    }

    #question-input {
        min-height: 3rem; /* match desktop */
        padding: var(--space-3) var(--space-8);
        padding-right: 2.75rem; /* match desktop inline button space */
        font-size: var(--font-size-lg);
    }

    #ask-button:not(.input-action) {
        width: 100%;
        min-height: 4rem;
        padding: var(--space-6) var(--space-8);
        font-size: var(--font-size-lg);
    }

    #ask-button:not(.input-action):hover,
    #copy-button:hover {
        transform: none;
    }

    .share-container {
        flex-direction: row; /* keep URL and copy button on one line */
        gap: var(--space-3);
        align-items: center;
        flex-wrap: nowrap;
    }

    /* Keep copy button compact inline */
    #copy-button {
        align-self: center;
        width: 3rem;
        height: 3rem;
        min-height: 3rem;
        aspect-ratio: auto;
    }

    .final-message {
        padding: var(--space-16) var(--space-8);
        margin-bottom: var(--space-8);
    }

    .final-message h2 {
        font-size: var(--font-size-4xl);
        margin-bottom: var(--space-6);
    }

    .final-message p {
        font-size: var(--font-size-xl);
        margin-bottom: var(--space-8);
    }

    .browser-content {
        padding: var(--space-4);
        min-height: 20rem;
        width: 100%; /* fills the fixed .browser-mockup width */
    }

    .chat-interface {
        max-width: 100%;
    }

    .message-input-container {
        padding: var(--space-5) var(--space-6);
        min-height: 4rem;
    }

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

    .claude-message {
        padding: var(--space-5) var(--space-6);
    }

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

    .action-buttons-container {
        flex-direction: column;
        align-items: center;
    }

    #claude-button,
    #start-over-button {
        width: 100%;
        max-width: 20rem;
        flex: none;
    }
}

@media (max-width: 24rem) {
    /* Slightly narrower gutter on very small screens */
    .browser-mockup {
        width: calc(100vw - 1rem);
    }

    .browser-header {
        padding: var(--space-2) var(--space-3);
    }

    .browser-buttons {
        left: var(--space-3);
    }

    .address-bar {
        min-width: 8rem;
        padding: var(--space-1) var(--space-3);
        font-size: var(--font-size-xs);
    }

    .browser-content {
        padding: var(--space-3);
    }

    /* Stack input and buttons earlier for small screens */
    .search-container {
        flex-direction: column;
        align-items: stretch;
    }

    #ask-button:not(.input-action) {
        width: 100%;
    }

    .share-container {
        flex-direction: row; /* still inline on very small screens */
        align-items: center;
        flex-wrap: nowrap;
        gap: var(--space-3);
    }

    /* Ensure compact copy button on very small screens */
    #copy-button {
        align-self: center;
        width: 2.5rem;
        height: 2.5rem;
        min-height: 2.5rem;
        aspect-ratio: auto;
    }

    .container {
        padding: var(--space-4) var(--space-3);
    }

    header h1 {
        font-size: var(--font-size-3xl);
    }

    .search-container {
        padding: 0;
    }

    .final-message {
        padding: var(--space-8) var(--space-4);
    }

    .final-message h2 {
        font-size: var(--font-size-2xl);
    }

    .browser-content {
        padding: var(--space-4);
    }
}
#ask-button.input-action.loading::after {
    content: "";
    position: absolute;
    width: 14px;
    height: 14px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 2px solid transparent;
    border-top: 2px solid #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}