/* ========================================
   DentalPhysics Marketing — Style
   ======================================== */

:root {
    --color-bg: #FAFAF8;
    --color-surface: #FFFFFF;
    --color-text: #1A1A1A;
    --color-text-muted: #6B6B6B;
    --color-text-light: #9A9A9A;
    --color-accent: #0D7C66;
    --color-accent-light: #E8F5F1;
    --color-accent-dark: #095C4B;
    --color-border: #E8E8E4;
    --color-border-light: #F0F0EC;
    --font-display: 'DM Serif Display', Georgia, serif;
    --font-body: 'Instrument Sans', -apple-system, sans-serif;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.06), 0 2px 8px 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);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

em {
    font-family: var(--font-display);
    font-style: italic;
    color: var(--color-accent);
}

/* ---- Section Label ---- */
.section-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    margin-bottom: 1rem;
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.75rem;
    border-radius: 50px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: none;
}

.btn--primary {
    background: var(--color-accent);
    color: #fff;
    box-shadow: 0 2px 12px rgba(13, 124, 102, 0.3);
}

.btn--primary:hover {
    background: var(--color-accent-dark);
    box-shadow: 0 4px 20px rgba(13, 124, 102, 0.4);
    transform: translateY(-1px);
}

.btn--ghost {
    background: transparent;
    color: var(--color-text);
    border: 1.5px solid var(--color-border);
}

.btn--ghost:hover {
    border-color: var(--color-text);
    background: var(--color-text);
    color: #fff;
}

.btn--outline {
    background: transparent;
    color: var(--color-accent);
    border: 1.5px solid var(--color-accent);
    width: 100%;
    justify-content: center;
}

.btn--outline:hover {
    background: var(--color-accent);
    color: #fff;
}

.btn--lg {
    padding: 1.1rem 2.25rem;
    font-size: 1.05rem;
}

.btn__arrow {
    transition: transform 0.3s;
}

.btn:hover .btn__arrow {
    transform: translateX(3px);
}

/* ---- Navigation ---- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(250, 250, 248, 0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-border-light);
}

.nav__inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.9rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-size: 1.35rem;
    color: var(--color-text);
}

.nav__logo-icon {
    color: var(--color-accent);
    font-size: 1.5rem;
}

.nav__links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav__links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color 0.2s;
}

.nav__links a:hover {
    color: var(--color-text);
}

.nav__cta {
    background: var(--color-text);
    color: #fff !important;
    padding: 0.55rem 1.25rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.85rem !important;
    transition: all 0.3s !important;
}

.nav__cta:hover {
    background: var(--color-accent) !important;
    color: #fff !important;
}

/* ---- Hero ---- */
.hero {
    position: relative;
    padding: 10rem 2rem 6rem;
    display: flex;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    gap: 4rem;
    min-height: 100vh;
}

.hero__bg-grid {
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(0,0,0,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,0,0,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: -1;
}

.hero__content {
    flex: 1;
}

.hero__badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: var(--color-accent-light);
    color: var(--color-accent);
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 1.75rem;
    animation: fadeInUp 0.6s ease-out;
}

.hero__title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 4.5vw, 3.75rem);
    line-height: 1.15;
    letter-spacing: -0.01em;
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero__subtitle {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    max-width: 480px;
    line-height: 1.7;
    margin-bottom: 2rem;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero__actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

.hero__stats {
    display: flex;
    align-items: center;
    gap: 2rem;
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.hero__stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--color-text);
}

.hero__stat-label {
    font-size: 0.8rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.hero__stat-divider {
    width: 1px;
    height: 36px;
    background: var(--color-border);
}

/* ---- Hero Mockup ---- */
.hero__visual {
    flex: 1;
    display: flex;
    justify-content: center;
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero__mockup {
    width: 100%;
    max-width: 480px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid var(--color-border-light);
}

.mockup__bar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 12px 16px;
    background: #F8F8F6;
    border-bottom: 1px solid var(--color-border-light);
}

.mockup__dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-border);
}

.mockup__dot:first-child { background: #FF6058; }
.mockup__dot:nth-child(2) { background: #FFC130; }
.mockup__dot:nth-child(3) { background: #27CA40; }

.mockup__url {
    margin-left: auto;
    font-size: 0.7rem;
    color: var(--color-text-light);
    background: var(--color-bg);
    padding: 3px 12px;
    border-radius: 6px;
}

.mockup__body {
    display: flex;
    min-height: 300px;
}

.mockup__sidebar {
    width: 60px;
    background: #F4F4F2;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    border-right: 1px solid var(--color-border-light);
}

.mockup__nav-item {
    height: 8px;
    border-radius: 4px;
    background: var(--color-border);
}

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

.mockup__content {
    flex: 1;
    padding: 20px;
}

.mockup__header-line {
    height: 14px;
    width: 45%;
    background: var(--color-border);
    border-radius: 4px;
    margin-bottom: 20px;
}

.mockup__cards {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.mockup__card {
    flex: 1;
    background: var(--color-accent-light);
    border-radius: var(--radius-sm);
    padding: 16px;
    border: 1px solid rgba(13, 124, 102, 0.1);
}

.mockup__card-num {
    font-family: var(--font-display);
    font-size: 1.75rem;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 6px;
}

.mockup__card-label {
    height: 6px;
    width: 60%;
    background: rgba(13, 124, 102, 0.15);
    border-radius: 3px;
}

.mockup__table {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mockup__row {
    height: 12px;
    background: var(--color-border-light);
    border-radius: 4px;
}

.mockup__row:nth-child(odd) { width: 100%; }
.mockup__row:nth-child(even) { width: 85%; }

/* ---- Features ---- */
.features {
    padding: 8rem 2rem;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border-light);
    border-bottom: 1px solid var(--color-border-light);
}

.features__inner {
    max-width: 1100px;
    margin: 0 auto;
    text-align: center;
}

.features__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    line-height: 1.2;
    margin-bottom: 4rem;
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    text-align: left;
}

.feature-card {
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--color-border-light);
    background: var(--color-bg);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.feature-card__icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-light);
    color: var(--color-accent);
    border-radius: var(--radius-sm);
    margin-bottom: 1.25rem;
}

.feature-card h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    margin-bottom: 0.6rem;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.65;
}

/* ---- Workflow ---- */
.workflow {
    padding: 8rem 2rem;
}

.workflow__inner {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

.workflow__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    line-height: 1.2;
    margin-bottom: 4rem;
}

.workflow__steps {
    display: flex;
    align-items: flex-start;
    gap: 0;
    text-align: left;
}

.workflow__step {
    flex: 1;
    padding: 2rem;
}

.workflow__step-num {
    font-family: var(--font-display);
    font-size: 3rem;
    color: var(--color-accent);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 1rem;
}

.workflow__step h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    margin-bottom: 0.6rem;
}

.workflow__step p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.65;
}

.workflow__connector {
    width: 60px;
    height: 2px;
    background: var(--color-border);
    margin-top: 3.5rem;
    flex-shrink: 0;
}

/* ---- Pricing ---- */
.pricing {
    padding: 8rem 2rem;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border-light);
}

.pricing__inner {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.pricing__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    margin-bottom: 0.75rem;
}

.pricing__subtitle {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    margin-bottom: 3.5rem;
}

.pricing__cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 700px;
    margin: 0 auto;
}

.pricing__card {
    position: relative;
    padding: 2.5rem 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    text-align: left;
    transition: all 0.3s;
}

.pricing__card:hover {
    box-shadow: var(--shadow-md);
}

.pricing__card--featured {
    border-color: var(--color-accent);
    background: var(--color-surface);
    box-shadow: var(--shadow-lg);
}

.pricing__card-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.3rem 1rem;
    border-radius: 50px;
    white-space: nowrap;
}

.pricing__card-name {
    font-weight: 600;
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}

.pricing__card-price {
    font-family: var(--font-display);
    font-size: 3.5rem;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.pricing__currency {
    font-size: 1.5rem;
    vertical-align: top;
    margin-right: 2px;
}

.pricing__period {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--color-text-muted);
    font-weight: 400;
}

.pricing__card-desc {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: 1.75rem;
    padding-bottom: 1.75rem;
    border-bottom: 1px solid var(--color-border-light);
}

.pricing__features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing__features li {
    padding: 0.4rem 0;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    padding-left: 1.5rem;
    position: relative;
}

.pricing__features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 700;
}

/* ---- CTA ---- */
.cta {
    padding: 8rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(13, 124, 102, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.cta__inner {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.cta__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.15;
    margin-bottom: 1.25rem;
}

.cta__subtitle {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

/* ---- Footer ---- */
.footer {
    border-top: 1px solid var(--color-border-light);
    padding: 3rem 2rem;
}

.footer__inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer__brand {
    font-family: var(--font-display);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer__links {
    display: flex;
    gap: 2rem;
}

.footer__links a {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    transition: color 0.2s;
}

.footer__links a:hover {
    color: var(--color-text);
}

.footer__copy {
    font-size: 0.8rem;
    color: var(--color-text-light);
}

/* ---- Animations ---- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:nth-child(2).fade-in.visible { transition-delay: 0.1s; }
.feature-card:nth-child(3).fade-in.visible { transition-delay: 0.2s; }
.feature-card:nth-child(4).fade-in.visible { transition-delay: 0.05s; }
.feature-card:nth-child(5).fade-in.visible { transition-delay: 0.15s; }
.feature-card:nth-child(6).fade-in.visible { transition-delay: 0.25s; }

/* ---- Responsive ---- */
@media (max-width: 900px) {
    .hero {
        flex-direction: column;
        padding-top: 8rem;
        min-height: auto;
    }

    .hero__visual {
        order: -1;
    }

    .hero__mockup {
        max-width: 400px;
    }

    .features__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .workflow__steps {
        flex-direction: column;
        align-items: stretch;
    }

    .workflow__connector {
        width: 2px;
        height: 30px;
        margin: 0 auto;
    }

    .pricing__cards {
        grid-template-columns: 1fr;
        max-width: 400px;
    }

    .footer__inner {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
}

@media (max-width: 600px) {
    .nav__links a:not(.nav__cta) {
        display: none;
    }

    .features__grid {
        grid-template-columns: 1fr;
    }

    .hero__stats {
        flex-wrap: wrap;
        gap: 1.5rem;
    }

    .hero__stat-divider {
        display: none;
    }

    .hero__actions {
        flex-direction: column;
    }

    .btn {
        justify-content: center;
    }
}