/* ============================================
   smartwatchd — Premium Styles
   ============================================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Colors — Refined neutral palette */
    --color-bg: #FAFAF9;
    --color-bg-alt: #F5F5F4;
    --color-bg-card: #FFFFFF;
    --color-bg-elevated: #FFFFFF;
    
    --color-text: #1C1917;
    --color-text-secondary: #57534E;
    --color-text-tertiary: #A8A29E;
    
    --color-border: #E7E5E4;
    --color-border-subtle: #F5F5F4;
    
    --color-accent: #1C1917;
    --color-accent-hover: #292524;
    --color-success: #15803D;
    --color-success-bg: #DCFCE7;
    
    /* Typography */
    --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-serif: 'Instrument Serif', Georgia, 'Times New Roman', serif;
    
    /* Font sizes — Fluid scale */
    --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
    --text-sm: clamp(0.8125rem, 0.75rem + 0.3vw, 0.9375rem);
    --text-base: clamp(0.9375rem, 0.875rem + 0.3vw, 1.0625rem);
    --text-lg: clamp(1.0625rem, 1rem + 0.3vw, 1.1875rem);
    --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
    --text-2xl: clamp(1.5rem, 1.25rem + 1.25vw, 2rem);
    --text-3xl: clamp(2rem, 1.5rem + 2.5vw, 3rem);
    --text-4xl: clamp(2.5rem, 1.75rem + 3.75vw, 4.5rem);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;
    
    /* Layout */
    --container-max: 640px;
    --container-padding: clamp(1.25rem, 5vw, 2rem);
    
    /* Borders */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
    --duration-fast: 150ms;
    --duration-base: 250ms;
    --duration-slow: 400ms;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 500;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

em {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 400;
}

/* ---------- Layout ---------- */
.section {
    display: none;
    min-height: 100vh;
    min-height: 100dvh;
}

.section.active {
    display: flex;
    flex-direction: column;
    animation: fadeIn var(--duration-slow) var(--ease-out-expo);
}

@keyframes fadeIn {
    from { 
        opacity: 0; 
        transform: translateY(8px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ---------- Logo ---------- */
.nav-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    color: var(--color-text);
}

.logo-mark {
    flex-shrink: 0;
}

.logo-type {
    font-size: var(--text-base);
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* ---------- Landing Section ---------- */
#landing {
    justify-content: space-between;
    padding-top: var(--space-xl);
    padding-bottom: var(--space-3xl);
}

.landing-header {
    display: flex;
    justify-content: center;
    padding: var(--space-md) 0;
    margin-bottom: var(--space-2xl);
}

#landing .container {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.hero {
    text-align: center;
    padding: var(--space-3xl) 0;
}

.hero-eyebrow {
    font-size: var(--text-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-lg);
}

.hero-title {
    font-size: var(--text-4xl);
    font-weight: 500;
    line-height: 1.05;
    margin-bottom: var(--space-xl);
}

.hero-title em {
    display: inline-block;
}

.hero-body {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 400px;
    margin: 0 auto var(--space-2xl);
    line-height: 1.5;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-family: inherit;
    font-size: var(--text-base);
    font-weight: 500;
    line-height: 1;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--duration-base) var(--ease-out);
}

.btn-primary {
    background-color: var(--color-accent);
    color: white;
    padding: var(--space-lg) var(--space-2xl);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary svg {
    transition: transform var(--duration-base) var(--ease-out);
}

.btn-primary:hover svg {
    transform: translateX(3px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-bg-alt);
    border-color: var(--color-text-tertiary);
}

.btn-back {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    font-family: inherit;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-out);
}

.btn-back:hover {
    color: var(--color-text);
    background-color: var(--color-bg-alt);
}

/* ---------- Landing Footer ---------- */
.landing-footer {
    text-align: center;
}

.trust-indicators {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-xl);
    margin-bottom: var(--space-3xl);
}

.trust-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
}

.trust-number {
    font-size: var(--text-2xl);
    font-weight: 600;
    letter-spacing: -0.02em;
}

.trust-label {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.trust-divider {
    width: 1px;
    height: 32px;
    background-color: var(--color-border);
}

.brands-label {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
}

.brands {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.brands span {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-tertiary);
}

/* ---------- Quiz Section ---------- */
#quiz {
    padding-top: var(--space-xl);
}

#quiz .container {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.quiz-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) 0;
    margin-bottom: var(--space-2xl);
}

/* Progress Steps */
.progress {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.progress-steps {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.step {
    width: 32px;
    height: 3px;
    background-color: var(--color-border);
    border-radius: var(--radius-full);
    transition: all var(--duration-base) var(--ease-out);
}

.step.active {
    background-color: var(--color-accent);
}

.step.completed {
    background-color: var(--color-accent);
}

/* Quiz Content */
.quiz-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding-bottom: var(--space-3xl);
}

.question-container {
    animation: questionIn var(--duration-slow) var(--ease-out-expo);
}

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

.question-label {
    font-size: var(--text-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-md);
}

.question-text {
    font-size: var(--text-3xl);
    font-weight: 500;
    line-height: 1.1;
    margin-bottom: var(--space-3xl);
}

/* Options */
.options-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.option {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    width: 100%;
    padding: var(--space-lg) var(--space-xl);
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    font-family: inherit;
    text-align: left;
    cursor: pointer;
    transition: all var(--duration-base) var(--ease-out);
}

.option:hover {
    border-color: var(--color-text-tertiary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.option:active {
    transform: translateY(0);
}

.option.selected {
    border-color: var(--color-accent);
    background-color: var(--color-bg-alt);
}

.option-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    color: var(--color-text);
}

.option-icon svg {
    width: 32px;
    height: 32px;
}

.option-content {
    flex: 1;
    min-width: 0;
}

.option-label {
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.option-desc {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.option-check {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--duration-fast) var(--ease-out);
}

.option.selected .option-check {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
}

.option-check svg {
    width: 14px;
    height: 14px;
    stroke: white;
    stroke-width: 3;
    opacity: 0;
    transform: scale(0.5);
    transition: all var(--duration-fast) var(--ease-out);
}

.option.selected .option-check svg {
    opacity: 1;
    transform: scale(1);
}

/* ---------- Results Section ---------- */
#results {
    padding-top: var(--space-xl);
    padding-bottom: var(--space-3xl);
}

.results-header {
    display: flex;
    justify-content: center;
    padding: var(--space-md) 0;
    margin-bottom: var(--space-2xl);
}

.results-intro {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.results-eyebrow {
    font-size: var(--text-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-md);
}

.results-title {
    font-size: var(--text-3xl);
    font-weight: 500;
}

/* Featured Card */
.card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.card-featured {
    margin-bottom: var(--space-3xl);
    box-shadow: var(--shadow-lg);
}

.card-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    background-color: var(--color-accent);
    color: white;
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
}

.card-header {
    padding: var(--space-xl);
    padding-bottom: 0;
}

.card-body {
    padding: var(--space-xl);
}

.watch-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 200px;
    margin-bottom: var(--space-xl);
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.watch-image {
    max-width: 100%;
    max-height: 180px;
    width: auto;
    height: auto;
    object-fit: contain;
}

.watch-meta {
    margin-bottom: var(--space-md);
}

.watch-brand {
    font-size: var(--text-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-xs);
}

.watch-name {
    font-size: var(--text-2xl);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-sm);
}

.watch-price {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-success);
}

.watch-match {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background-color: var(--color-success-bg);
    color: var(--color-success);
    font-size: var(--text-sm);
    font-weight: 500;
    border-radius: var(--radius-full);
}

/* Pros & Cons */
.features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.features-col h4 {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-md);
}

.features-col ul {
    list-style: none;
}

.features-col li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
    line-height: 1.4;
}

.features-col li::before {
    flex-shrink: 0;
    margin-top: 2px;
}

.pros li::before {
    content: "✓";
    color: var(--color-success);
    font-weight: 600;
}

.cons li::before {
    content: "—";
    color: var(--color-text-tertiary);
}

/* Buy Button */
.btn-buy {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    width: 100%;
    padding: var(--space-lg);
    background-color: var(--color-accent);
    color: white;
    font-family: inherit;
    font-size: var(--text-base);
    font-weight: 500;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--duration-base) var(--ease-out);
}

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

.btn-buy svg {
    transition: transform var(--duration-base) var(--ease-out);
}

.btn-buy:hover svg {
    transform: translateX(3px);
}

/* Alternatives */
.alternatives-section {
    margin-bottom: var(--space-3xl);
}

.alternatives-heading {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.alternatives-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.card-alt {
    padding: var(--space-lg);
}

.alt-layout {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-md);
}

.alt-visual {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-md);
    flex-shrink: 0;
    overflow: hidden;
}

.alt-image {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
}

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

.alt-brand {
    font-size: var(--text-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
}

.alt-name {
    font-size: var(--text-base);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.alt-price {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-success);
}

.alt-reason {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    padding-left: var(--space-md);
    border-left: 2px solid var(--color-border);
}

.btn-alt {
    display: block;
    width: 100%;
    padding: var(--space-md);
    background-color: var(--color-bg-alt);
    color: var(--color-text);
    font-family: inherit;
    font-size: var(--text-sm);
    font-weight: 500;
    text-decoration: none;
    text-align: center;
    border-radius: var(--radius-md);
    transition: all var(--duration-fast) var(--ease-out);
}

.btn-alt:hover {
    background-color: var(--color-border);
}

/* Results Footer */
.results-footer {
    text-align: center;
    padding-top: var(--space-2xl);
    border-top: 1px solid var(--color-border);
}

.disclosure {
    margin-top: var(--space-lg);
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    max-width: 320px;
    margin-left: auto;
    margin-right: auto;
}

/* ---------- Responsive ---------- */
@media (max-width: 480px) {
    .trust-indicators {
        gap: var(--space-md);
    }
    
    .trust-number {
        font-size: var(--text-xl);
    }
    
    .trust-divider {
        height: 24px;
    }
    
    .brands {
        gap: var(--space-md);
    }
    
    .option {
        padding: var(--space-md) var(--space-lg);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

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