/* ==========================================================================
   Questions for Couples — Main Stylesheet
   Romantic red accent palette · Clean modern utility design
   ========================================================================== */

:root {
    /* Primary palette */
    --color-primary:        #9B1B30;
    --color-primary-dark:   #7A1526;
    --color-primary-light:  #C4364D;
    --color-primary-hover:  #841726;

    /* Rose / soft accent */
    --color-rose:           #F4E1E5;
    --color-rose-light:     #FBF2F4;
    --color-rose-mid:       #E8C4CC;

    /* Neutrals */
    --color-bg:             #FFFFFF;
    --color-bg-warm:        #FDF9F9;
    --color-bg-section:     #FAF5F6;
    --color-text:           #2C2C2C;
    --color-text-light:     #6B6B6B;
    --color-text-muted:     #999999;
    --color-border:         #E8E0E2;
    --color-border-light:   #F0EAEB;

    /* Functional */
    --color-success:        #2E7D32;
    --color-success-bg:     #E8F5E9;
    --color-danger:         #C62828;

    /* 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;

    /* Layout */
    --container-max:  900px;
    --container-wide: 1080px;

    /* Radius */
    --radius-sm:  6px;
    --radius-md:  10px;
    --radius-lg:  16px;
    --radius-xl:  20px;

    /* Shadows */
    --shadow-sm:    0 1px 3px rgba(155, 27, 48, 0.06);
    --shadow-md:    0 4px 12px rgba(155, 27, 48, 0.08);
    --shadow-lg:    0 8px 30px rgba(155, 27, 48, 0.10);
    --shadow-card:  0 2px 8px rgba(155, 27, 48, 0.07);

    /* Typography */
    --font-body:    'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-heading: 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-size-base: 1rem;
    --line-height:    1.65;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */

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

html {
    font-size: 100%;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
    color: var(--color-text);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.2rem; }

/* ==========================================================================
   Layout
   ========================================================================== */

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

.site-main {
    flex: 1;
}

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border-light);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    max-width: var(--container-wide);
}

.site-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    color: var(--color-text);
}

.site-logo:hover {
    color: var(--color-primary);
}

.logo-text {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.nav-link {
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-light);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-primary);
    background: var(--color-rose-light);
}

.nav-link.active {
    color: var(--color-primary);
    background: var(--color-rose-light);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
    text-align: center;
    padding: var(--space-3xl) 0 var(--space-2xl);
    background: linear-gradient(180deg, var(--color-rose-light) 0%, var(--color-bg) 100%);
}

.hero-logo {
    display: block;
    margin: 0 auto var(--space-lg);
}

.hero-logo img {
    width: 280px;
    max-width: 90vw;
    height: auto;
    margin: 0 auto;
    display: block;
}

.hero h1 {
    font-size: 2.2rem;
    margin-bottom: var(--space-md);
    letter-spacing: -0.03em;
}

.hero h1 .accent {
    color: var(--color-primary);
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-light);
    max-width: 560px;
    margin: 0 auto var(--space-lg);
    line-height: 1.6;
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    font-weight: 500;
    padding: 6px 14px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    color: var(--color-text-light);
}

.badge .icon {
    font-size: 0.95rem;
}

/* ==========================================================================
   App Section — Deck Selection
   ========================================================================== */

.app-section {
    padding: var(--space-2xl) 0 var(--space-3xl);
}

.section-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.section-title {
    font-size: 1.4rem;
    margin-bottom: var(--space-xl);
}

/* Deck grid */
.deck-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

@media (min-width: 600px) {
    .deck-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.deck-card {
    position: relative;
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.deck-card:hover {
    border-color: var(--color-rose-mid);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.deck-card.selected {
    border-color: var(--color-primary);
    background: var(--color-rose-light);
    box-shadow: var(--shadow-md);
}

.deck-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-sm);
}

.deck-card-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-text);
}

.deck-card-desc {
    font-size: 0.85rem;
    color: var(--color-text-light);
    line-height: 1.5;
}

.deck-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--space-xs);
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.deck-complete-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-success);
    background: var(--color-success-bg);
    padding: 3px 10px;
    border-radius: 999px;
}

.deck-mini-progress {
    width: 100%;
    height: 4px;
    background: var(--color-border-light);
    border-radius: 999px;
    overflow: hidden;
    margin-top: var(--space-xs);
}

.deck-mini-progress-fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: 999px;
    transition: width var(--transition-base);
}

/* Load button */
.load-deck-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    background: var(--color-primary);
    color: #fff;
    border: none;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
}

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

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

.load-deck-btn:disabled {
    background: var(--color-border);
    color: var(--color-text-muted);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.load-deck-btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.btn-center {
    display: flex;
    justify-content: center;
}

/* ==========================================================================
   Question Viewer
   ========================================================================== */

.question-viewer {
    display: none;
}

.question-viewer.active {
    display: block;
}

.viewer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.viewer-deck-title {
    font-size: 1.15rem;
    font-weight: 700;
}

.viewer-back-to-decks {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-light);
    cursor: pointer;
    background: none;
    border: 1px solid var(--color-border);
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.viewer-back-to-decks:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-rose-light);
}

.question-counter {
    text-align: center;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

/* Question card */
.question-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl) var(--space-xl);
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--space-lg);
    position: relative;
    overflow: hidden;
}

.question-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
}

.question-text {
    font-size: 1.25rem;
    line-height: 1.6;
    font-weight: 500;
    color: var(--color-text);
    max-width: 580px;
}

/* Navigation controls */
.question-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.nav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border: 2px solid var(--color-border);
    border-radius: 50%;
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 1.2rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.nav-btn:hover:not(:disabled) {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-rose-light);
    box-shadow: var(--shadow-sm);
}

.nav-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.nav-btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Checkbox */
.completion-check {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.completion-check input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    flex-shrink: 0;
}

.completion-check input[type="checkbox"]:checked {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.completion-check input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 6px;
    width: 6px;
    height: 10px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.completion-check input[type="checkbox"]:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.completion-check label {
    font-size: 0.9rem;
    color: var(--color-text-light);
    cursor: pointer;
    user-select: none;
}

/* Progress bar */
.progress-section {
    background: var(--color-bg-section);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
}

.progress-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
    font-size: 0.85rem;
}

.progress-label {
    font-weight: 600;
    color: var(--color-text);
}

.progress-pct {
    font-weight: 700;
    color: var(--color-primary);
}

.progress-bar {
    width: 100%;
    height: 10px;
    background: var(--color-border-light);
    border-radius: 999px;
    overflow: hidden;
    margin-bottom: var(--space-sm);
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    border-radius: 999px;
    transition: width var(--transition-base);
    min-width: 0;
}

.progress-text {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    text-align: center;
}

/* Deck complete message */
.deck-complete-msg {
    display: none;
    text-align: center;
    padding: var(--space-xl);
    background: var(--color-success-bg);
    border-radius: var(--radius-md);
    margin-top: var(--space-lg);
}

.deck-complete-msg.visible {
    display: block;
}

.deck-complete-msg .trophy {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
}

.deck-complete-msg p {
    font-weight: 600;
    color: var(--color-success);
    font-size: 1rem;
}

.deck-complete-msg .sub {
    font-weight: 400;
    color: var(--color-text-light);
    font-size: 0.88rem;
    margin-top: var(--space-xs);
}

/* Reset buttons */
.reset-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-top: var(--space-xl);
    flex-wrap: wrap;
}

.reset-btn {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--color-text-muted);
    background: none;
    border: 1px solid var(--color-border-light);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.reset-btn:hover {
    border-color: var(--color-danger);
    color: var(--color-danger);
    background: #FFF5F5;
}

/* ==========================================================================
   Benefits / Features Section
   ========================================================================== */

.benefits-section {
    padding: var(--space-3xl) 0;
    background: var(--color-bg-section);
}

.benefits-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

@media (min-width: 600px) {
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.benefit-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
}

.benefit-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-rose-light);
    border-radius: var(--radius-sm);
}

.benefit-card h3 {
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.benefit-card p {
    font-size: 0.85rem;
    color: var(--color-text-light);
    line-height: 1.5;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
    background: var(--color-bg-warm);
    border-top: 1px solid var(--color-border-light);
    padding: var(--space-xl) 0;
    margin-top: auto;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    max-width: var(--container-wide);
}

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

.footer-nav a {
    font-size: 0.85rem;
    color: var(--color-text-light);
    transition: color var(--transition-fast);
}

.footer-nav a:hover {
    color: var(--color-primary);
}

.footer-copy {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   Content Pages (About, Contact, Privacy, Terms)
   ========================================================================== */

.page-section {
    padding: var(--space-3xl) 0;
}

.page-section .container {
    max-width: 720px;
}

.page-header {
    margin-bottom: var(--space-2xl);
}

.page-header h1 {
    font-size: 1.8rem;
    margin-bottom: var(--space-sm);
}

.page-header .lead {
    font-size: 1.05rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

.page-content h2 {
    font-size: 1.2rem;
    margin: var(--space-xl) 0 var(--space-sm);
    color: var(--color-text);
}

.page-content p {
    margin-bottom: var(--space-md);
    color: var(--color-text);
    line-height: 1.7;
}

.page-content ul {
    margin: 0 0 var(--space-md) var(--space-lg);
    color: var(--color-text);
    line-height: 1.7;
}

.page-content li {
    margin-bottom: var(--space-xs);
}

/* About page — author photo (float + circular, text wrap) */
.about-intro::after {
    content: '';
    display: table;
    clear: both;
}

.about-author-photo {
    float: right;
    width: 140px;
    max-width: 38%;
    margin: 0 0 var(--space-md) var(--space-lg);
    padding: 0;
    border: none;
    shape-outside: circle(50% at 50% 50%);
    -webkit-shape-outside: circle(50% at 50% 50%);
}

.about-author-photo picture,
.about-author-photo img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 1;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: var(--shadow-md);
    border: 3px solid var(--color-border-light);
}

/* ==========================================================================
   Contact Form
   ========================================================================== */

.contact-form {
    background: var(--color-bg-section);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--color-text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    font-size: 0.95rem;
    font-family: var(--font-body);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    color: var(--color-text);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(155, 27, 48, 0.1);
}

.form-group textarea {
    min-height: 140px;
    resize: vertical;
}

.submit-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: #fff;
    border: none;
    padding: 12px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.submit-btn:hover {
    background: var(--color-primary-hover);
    box-shadow: var(--shadow-md);
}

.submit-btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.form-note {
    margin-top: var(--space-md);
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.form-success {
    display: none;
    text-align: center;
    padding: var(--space-xl);
    background: var(--color-success-bg);
    border-radius: var(--radius-md);
}

.form-success.visible {
    display: block;
}

.form-error {
    display: none;
    text-align: center;
    padding: var(--space-md);
    background: #FFF5F5;
    border: 1px solid #FFCDD2;
    border-radius: var(--radius-md);
    color: var(--color-danger);
    font-size: 0.9rem;
    margin-bottom: var(--space-md);
}

.form-error.visible {
    display: block;
}

/* Honeypot — visually hidden from real users */
.form-hp {
    position: absolute;
    left: -9999px;
    top: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
    opacity: 0;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 600px) {
    :root {
        --space-lg:  1.25rem;
        --space-xl:  1.5rem;
        --space-2xl: 2rem;
        --space-3xl: 2.5rem;
    }

    h1 { font-size: 1.6rem; }
    .hero-logo img { width: 200px; max-width: 85vw; }
    .hero h1 { font-size: 1.7rem; }
    .hero-subtitle { font-size: 1rem; }

    .header-inner {
        height: 56px;
    }

    .logo-text {
        font-size: 1.05rem;
    }

    .nav-link {
        padding: var(--space-xs) var(--space-sm);
        font-size: 0.82rem;
    }

    .question-text {
        font-size: 1.1rem;
    }

    .question-card {
        padding: var(--space-xl) var(--space-lg);
        min-height: 160px;
    }

    .viewer-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .about-author-photo {
        float: none;
        max-width: none;
        width: 120px;
        margin: 0 auto var(--space-md);
        shape-outside: none;
        -webkit-shape-outside: none;
    }
}

/* ==========================================================================
   Utility
   ========================================================================== */

.text-center { text-align: center; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-md { margin-bottom: var(--space-md); }
.hidden { display: none !important; }