:root {
    --cardio-dark: #0F172A;
    --cardio-dark-dim: #1E293B;
    --cardio-light: #F8FAFC;
    --cardio-white: #FFFFFF;
    --cardio-accent: #06B6D4;
    --cardio-accent-hover: #0891B2;
    --cardio-ink: #334155;
    
    --font-heading: 'Oswald', sans-serif;
    --font-text: 'Open Sans', sans-serif;
    
    --shadow-deep: 0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-float: 0 10px 15px -3px rgba(0, 0, 0, 0.2);
    --radius-soft: 16px;
    --radius-pill: 999px;
    --pad-spacious: 16dvh;
}

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

body {
    font-family: var(--font-text);
    background-color: var(--cardio-light);
    color: var(--cardio-ink);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    text-transform: uppercase;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

/* HEADER - Preset A */
.vascular-head-box {
    background-color: var(--cardio-dark);
    color: var(--cardio-white);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-float);
}

.vascular-inner-head {
    max-width: 1440px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.heartbeat-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    text-transform: uppercase;
    color: var(--cardio-accent);
}

.heartbeat-brand svg {
    width: 32px;
    height: 32px;
}

.pulse-nav-list {
    display: flex;
    gap: 2rem;
}

.pulse-link {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--cardio-white);
}

.pulse-link:hover {
    color: var(--cardio-accent);
}

.pulse-hidden-check {
    display: none;
}

.pulse-burger {
    display: none;
    cursor: pointer;
    color: var(--cardio-white);
}

.pulse-burger svg {
    width: 32px;
    height: 32px;
}

/* HERO - Preset A */
.tonometer-hero-sect {
    height: 100vh;
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 2rem;
}

.tonometer-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.65);
    z-index: 1;
}

.tonometer-hero-core {
    position: relative;
    z-index: 2;
    max-width: 900px;
    color: var(--cardio-white);
}

.pressure-hero-heading {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
    margin-bottom: 1.5rem;
}

.pressure-hero-sub {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.beat-btn-pill {
    display: inline-block;
    background-color: var(--cardio-accent);
    color: var(--cardio-white);
    padding: 1rem 3rem;
    border-radius: var(--radius-pill);
    font-family: var(--font-heading);
    font-size: 1.2rem;
    text-transform: uppercase;
    box-shadow: var(--shadow-float);
    border: none;
    cursor: pointer;
}

.beat-btn-pill:hover {
    background-color: var(--cardio-accent-hover);
    transform: translateY(-2px);
}

/* FLOATING STATS */
.vital-stats-area {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.vital-stats-row {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: -60px;
    position: relative;
    z-index: 10;
    flex-wrap: wrap;
}

.vital-stat-blob {
    background-color: var(--cardio-white);
    padding: 2rem;
    border-radius: var(--radius-soft);
    box-shadow: var(--shadow-deep);
    text-align: center;
    flex: 1;
    min-width: 200px;
    display: flex;
    flex-direction: column;
}

.vital-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    color: var(--cardio-accent);
    font-weight: 700;
    line-height: 1;
}

.vital-label {
    font-weight: 600;
    color: var(--cardio-dark-dim);
    margin-top: 0.5rem;
}

/* ZIGZAG SECTION */
.artery-zigzag-zone {
    padding: var(--pad-spacious) 2rem;
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--pad-spacious);
}

.artery-zig-item {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.artery-zig-item.reverse-flow {
    flex-direction: row-reverse;
}

.artery-zig-visual {
    flex: 0 0 45%;
}

.artery-zig-visual img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: var(--radius-soft);
}

.flow-slant-right img {
    clip-path: polygon(0 0, 100% 10%, 100% 100%, 0 90%);
}

.flow-slant-left img {
    clip-path: polygon(0 10%, 100% 0, 100% 90%, 0 100%);
}

.artery-zig-text {
    flex: 1;
}

.flow-heading {
    font-size: 2.5rem;
    color: var(--cardio-dark);
}

.flow-paragraph {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

/* FEATURES GRID */
.habit-grid-layout {
    background-color: var(--cardio-white);
    padding: var(--pad-spacious) 2rem;
}

.habit-main-title {
    text-align: center;
    font-size: 2.8rem;
    color: var(--cardio-dark);
    margin-bottom: 4rem;
}

.habit-grid-core {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
}

.habit-card-node {
    background-color: var(--cardio-light);
    padding: 2.5rem;
    border-radius: var(--radius-soft);
    border-left: 4px solid var(--cardio-accent);
    transition: all 0.3s ease;
}

.habit-card-node:hover {
    box-shadow: var(--shadow-deep);
    transform: translateY(-4px);
}

.habit-card-icon {
    color: var(--cardio-accent);
    margin-bottom: 1.5rem;
}

.habit-card-icon svg {
    width: 40px;
    height: 40px;
}

.habit-item-title {
    font-size: 1.5rem;
    color: var(--cardio-dark);
}

.habit-item-desc {
    color: var(--cardio-ink);
}

/* TIMELINE */
.rhythm-timeline-area {
    padding: var(--pad-spacious) 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.rhythm-title {
    text-align: center;
    font-size: 2.8rem;
    color: var(--cardio-dark);
    margin-bottom: 4rem;
}

.rhythm-track-wrap {
    position: relative;
    padding-left: 3rem;
}

.rhythm-track-wrap::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background-color: var(--cardio-accent);
    opacity: 0.3;
}

.rhythm-step-node {
    position: relative;
    margin-bottom: 4rem;
}

.rhythm-step-node:last-child {
    margin-bottom: 0;
}

.rhythm-step-marker {
    position: absolute;
    left: -3rem;
    top: 0;
    width: 48px;
    height: 48px;
    background-color: var(--cardio-dark);
    color: var(--cardio-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    transform: translateX(-50%);
    box-shadow: 0 0 0 6px var(--cardio-light);
}

.rhythm-step-marker::after {
    content: attr(data-num);
}

.rhythm-step-content {
    background-color: var(--cardio-white);
    padding: 2rem;
    border-radius: var(--radius-soft);
    box-shadow: var(--shadow-float);
}

.rhythm-step-head {
    color: var(--cardio-dark);
    font-size: 1.5rem;
}

/* CTA STRIP */
.action-strip-bar {
    position: relative;
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
    padding: var(--pad-spacious) 2rem;
    text-align: center;
}

.action-strip-core {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.action-strip-title {
    color: var(--cardio-white);
    font-size: 3rem;
    margin-bottom: 2.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

/* EXPERT PAGE */
.expert-intro-top {
    height: 50vh;
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.expert-hero-mod {
    text-align: center;
}

.expert-metrics-row {
    display: flex;
    justify-content: center;
    gap: 2rem;
    max-width: 1200px;
    margin: -40px auto 0;
    position: relative;
    z-index: 10;
    padding: 0 2rem;
    flex-wrap: wrap;
}

.expert-metric-node {
    background-color: var(--cardio-dark-dim);
    color: var(--cardio-white);
    padding: 2rem;
    border-radius: var(--radius-soft);
    text-align: center;
    flex: 1;
    min-width: 250px;
    box-shadow: var(--shadow-deep);
}

.metric-huge {
    display: block;
    font-family: var(--font-heading);
    font-size: 3.5rem;
    color: var(--cardio-accent);
}

.metric-label {
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.educator-split-info {
    display: flex;
    flex-wrap: wrap;
    max-width: 1440px;
    margin: var(--pad-spacious) auto;
    padding: 0 2rem;
    gap: 4rem;
    align-items: center;
}

.educator-visual-half {
    flex: 1;
    min-width: 300px;
}

.educator-visual-half img {
    border-radius: var(--radius-soft);
    box-shadow: var(--shadow-deep);
    width: 100%;
}

.educator-text-half {
    flex: 1;
    min-width: 300px;
}

.ed-point-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.ed-point-item svg {
    width: 24px;
    height: 24px;
    color: var(--cardio-accent);
    flex-shrink: 0;
}

.expert-action-call {
    background-color: var(--cardio-white);
    padding: var(--pad-spacious) 2rem;
}

.action-call-inner {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.expert-closing-zone {
    position: relative;
    padding: var(--pad-spacious) 2rem;
    background-size: cover;
    background-position: center;
    text-align: center;
}

.closing-zone-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    color: var(--cardio-white);
}

/* RESERVE PAGE */
.book-top-minimal {
    padding: 8vh 2rem 4vh;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.book-info-cards {
    display: flex;
    justify-content: center;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto var(--pad-spacious);
    padding: 0 2rem;
    flex-wrap: wrap;
}

.b-card-node {
    background: var(--cardio-white);
    padding: 2rem;
    border-radius: var(--radius-soft);
    flex: 1;
    min-width: 300px;
    box-shadow: var(--shadow-float);
}

.b-card-icon {
    width: 48px;
    height: 48px;
    color: var(--cardio-accent);
    margin-bottom: 1rem;
}

.b-card-list {
    list-style: none;
    margin-top: 1rem;
}

.b-card-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
}

.b-card-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    background-color: var(--cardio-accent);
    border-radius: 50%;
}

.session-form-core {
    max-width: 600px;
    margin: 0 auto var(--pad-spacious);
    padding: 0 2rem;
}

.booking-form-box {
    background: var(--cardio-white);
    padding: 3rem 2rem;
    border-radius: var(--radius-soft);
    box-shadow: var(--shadow-deep);
}

.form-input-group {
    margin-bottom: 1.5rem;
}

.form-input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--cardio-dark);
}

.form-input-group input,
.form-input-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid #CBD5E1;
    border-radius: var(--radius-soft);
    font-family: var(--font-text);
    font-size: 1rem;
    background: var(--cardio-light);
}

.form-input-group input:focus,
.form-input-group textarea:focus {
    outline: none;
    border-color: var(--cardio-accent);
}

.form-check-group {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    margin-bottom: 2rem;
}

.form-check-group input {
    margin-top: 0.3rem;
}

.form-check-group label {
    font-size: 0.9rem;
}

.form-check-group a {
    color: var(--cardio-accent);
    text-decoration: underline;
}

.form-submit-mod {
    width: 100%;
}

.contact-mailto {
    margin-top: 2rem;
    text-align: center;
    font-size: 0.9rem;
}

.contact-mailto a {
    color: var(--cardio-accent);
    font-weight: 600;
}

.faq-accordion-box {
    max-width: 800px;
    margin: 0 auto var(--pad-spacious);
    padding: 0 2rem;
}

.faq-details-item {
    background: var(--cardio-white);
    margin-bottom: 1rem;
    border-radius: var(--radius-soft);
    box-shadow: var(--shadow-float);
    overflow: hidden;
}

.faq-summary {
    padding: 1.5rem;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    color: var(--cardio-dark);
    list-style: none;
    position: relative;
}

.faq-summary::-webkit-details-marker {
    display: none;
}

.faq-summary::after {
    content: '+';
    position: absolute;
    right: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    color: var(--cardio-accent);
}

.faq-details-item[open] .faq-summary::after {
    content: '-';
}

.faq-content-text {
    padding: 0 1.5rem 1.5rem;
    color: var(--cardio-ink);
}

/* LEGAL PAGES */
.legal-doc-wrap {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--pad-spacious) 2rem;
    min-height: 100vh;
}

/* FOOTER */
.footer-base-wrap {
    background-color: var(--cardio-dark);
    color: var(--cardio-white);
    padding: 4rem 2rem 2rem;
}

.footer-inner-core {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 2rem;
}

.footer-brand-mark {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--cardio-accent);
}

.footer-brand-mark svg {
    width: 24px;
    height: 24px;
}

.footer-legal-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-legal-links a:hover {
    color: var(--cardio-accent);
}

.footer-disclaimer-text {
    font-size: 0.85rem;
    opacity: 0.7;
    max-width: 600px;
}

.footer-years-text {
    font-size: 0.9rem;
    opacity: 0.5;
}

/* COOKIE BANNER */
.cookie-notice-float {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--cardio-dark-dim);
    color: var(--cardio-white);
    padding: 1.5rem 2rem;
    z-index: 9999;
    display: none;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    box-shadow: 0 -10px 15px rgba(0,0,0,0.1);
}

.cookie-notice-text {
    flex: 1;
    min-width: 300px;
}

.cookie-notice-actions {
    display: flex;
    gap: 1rem;
}

.cookie-btn-allow, .cookie-btn-deny {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-pill);
    cursor: pointer;
    font-weight: 600;
}

.cookie-btn-allow {
    background-color: var(--cardio-accent);
    color: var(--cardio-white);
}

.cookie-btn-deny {
    background-color: transparent;
    color: var(--cardio-white);
    border: 1px solid var(--cardio-white);
}

/* RESPONSIVE */
@media (max-width: 900px) {
    .artery-zig-item,
    .artery-zig-item.reverse-flow {
        flex-direction: column;
        gap: 2rem;
    }
    .habit-grid-core {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .pulse-nav-list {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--cardio-dark);
        padding: 2rem;
        text-align: center;
        box-shadow: 0 10px 15px rgba(0,0,0,0.2);
    }
    
    .pulse-burger {
        display: block;
    }
    
    .pulse-hidden-check:checked ~ .pulse-nav-list {
        display: flex;
    }
    
    .vital-stats-row {
        margin-top: 2rem;
    }
    
    .rhythm-track-wrap {
        padding-left: 2rem;
    }
    
    .rhythm-step-marker {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
        left: -2rem;
    }
}