/* ============================================
   SIMON SILVER — SITO MARKETING PREMIUM
   Design System & Styles
   ============================================ */

/* ===== VARIABLES ===== */
:root {
    /* Colors — Premium Dark Palette */
    --color-bg:          #0a0a0f;
    --color-bg-elevated: #12121a;
    --color-bg-card:     #1a1a26;
    --color-bg-card-hover: #22222e;
    --color-surface:     #252535;
    
    --color-text:        #e8e8ef;
    --color-text-muted:  #8888a0;
    --color-text-dim:    #555570;
    
    --color-accent:      #f59e0b;
    --color-accent-glow: rgba(245, 158, 11, 0.15);
    --color-accent-hover:#fbbf24;
    
    --color-danger:      #ef4444;
    --color-danger-dim:  rgba(239, 68, 68, 0.12);
    
    --color-success:     #22c55e;
    --color-success-dim: rgba(34, 197, 94, 0.12);
    
    --color-whatsapp:    #25d366;
    --color-whatsapp-hover: #20bd5a;
    
    --color-youtube:     #ff0000;
    
    --color-border:      rgba(255, 255, 255, 0.06);
    --color-border-light:rgba(255, 255, 255, 0.1);
    
    /* Typography */
    --font-sans:   'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display:'Playfair Display', Georgia, 'Times New Roman', serif;
    
    /* Spacing */
    --section-py: clamp(4rem, 8vw, 7rem);
    --container-px: clamp(1.25rem, 4vw, 2rem);
    --container-max: 1100px;
    
    /* Borders */
    --radius-sm:  8px;
    --radius-md:  12px;
    --radius-lg:  20px;
    --radius-xl:  28px;
    
    /* Transitions */
    --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-slow: 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

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

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    overflow-x: hidden;
}

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

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

/* ===== UTILITIES ===== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding-left: var(--container-px);
    padding-right: var(--container-px);
}

.text-accent {
    color: var(--color-accent);
}

.text-danger {
    color: var(--color-danger);
}

.section {
    padding: var(--section-py) 0;
    position: relative;
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    margin-bottom: 1rem;
    padding: 0.35rem 1rem;
    background: var(--color-accent-glow);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: 100px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 600px;
    line-height: 1.8;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.85rem 2rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    font-family: var(--font-sans);
}

.btn-lg {
    padding: 1rem 2.4rem;
    font-size: 1.05rem;
}

.btn-xl {
    padding: 1.15rem 2.8rem;
    font-size: 1.1rem;
    border-radius: var(--radius-lg);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent), #d97706);
    color: #000;
    box-shadow: 0 4px 25px rgba(245, 158, 11, 0.25);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 35px rgba(245, 158, 11, 0.35);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-muted);
    border: 1px solid var(--color-border-light);
}
.btn-ghost:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.btn-whatsapp {
    background: var(--color-whatsapp);
    color: #fff;
    box-shadow: 0 4px 25px rgba(37, 211, 102, 0.3);
}
.btn-whatsapp:hover {
    background: var(--color-whatsapp-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 35px rgba(37, 211, 102, 0.4);
}

.btn-outline-light {
    background: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-border-light);
}
.btn-outline-light:hover {
    border-color: var(--color-text);
    background: rgba(255, 255, 255, 0.05);
}

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    transition: all var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: 0.7rem 0;
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-px);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.2rem;
    font-weight: 800;
}

.logo-icon {
    font-size: 1.4rem;
}

.logo-text {
    color: var(--color-text);
    line-height: 1.1;
}

.logo-accent {
    color: var(--color-accent);
}

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

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition);
}
.nav-link:hover {
    color: var(--color-text);
}

.nav-cta {
    font-size: 0.9rem;
    font-weight: 600;
    color: #000;
    background: var(--color-accent);
    padding: 0.55rem 1.4rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}
.nav-cta:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
}

.nav-mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.nav-mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition);
}

.nav-mobile {
    display: none;
    flex-direction: column;
    padding: 1rem var(--container-px) 1.5rem;
    gap: 0.5rem;
}
.nav-mobile.open {
    display: flex;
}

.nav-mobile-link {
    padding: 0.75rem 0;
    color: var(--color-text-muted);
    font-weight: 500;
    border-bottom: 1px solid var(--color-border);
}
.nav-mobile-link.cta {
    color: var(--color-accent);
    font-weight: 700;
    border-bottom: none;
    margin-top: 0.5rem;
}

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 6rem 0 3rem;
    overflow: hidden;
}

.hero-bg-effects {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
}

.hero-orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-accent) 0%, transparent 70%);
    top: -15%;
    right: -10%;
    opacity: 0.15;
}

.hero-orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #6366f1 0%, transparent 70%);
    bottom: 0;
    left: -5%;
    opacity: 0.08;
}

.hero-grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 50% 60% at 50% 40%, black 20%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 50% 60% at 50% 40%, black 20%, transparent 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    padding: 0 var(--container-px);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1.2rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border-light);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-bottom: 2rem;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    display: inline-block;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.8rem, 7vw, 5rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
}

.hero-highlight {
    color: var(--color-accent);
    position: relative;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 4rem;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
}

.hero-stat {
    text-align: center;
}

.hero-stat-number {
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--color-text);
    line-height: 1;
    display: inline;
}

.hero-stat-plus {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-accent);
}

.hero-stat-label {
    display: block;
    font-size: 0.78rem;
    color: var(--color-text-dim);
    margin-top: 0.35rem;
    font-weight: 500;
}

.hero-stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border-light);
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, var(--color-accent), transparent);
    animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
    0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
    100% { opacity: 0; transform: scaleY(1); transform-origin: bottom; }
}

/* ===== PROBLEM SECTION ===== */
.section-problem {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

.problem-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all var(--transition);
}
.problem-card:hover {
    background: var(--color-bg-card-hover);
    border-color: rgba(239, 68, 68, 0.2);
    transform: translateY(-4px);
}

.problem-icon-svg {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-danger-dim);
    border-radius: var(--radius-md);
    color: var(--color-danger);
    margin-bottom: 1.25rem;
}

.problem-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.problem-card p {
    font-size: 0.92rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ===== ABOUT SECTION ===== */
.section-about {
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
}

.about-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text p {
    color: var(--color-text-muted);
    margin-bottom: 1rem;
    font-size: 1rem;
    line-height: 1.8;
}
.about-text p strong {
    color: var(--color-text);
}

.about-credentials {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 2rem;
}

.credential {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.92rem;
}

.credential-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--color-accent-glow);
    border-radius: var(--radius-sm);
    color: var(--color-accent);
    flex-shrink: 0;
}

.about-visual {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.about-image-wrapper {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 4/5;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
}

.about-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 60% top;
    transform: rotate(-1.5deg) scale(1.05);
}

.about-image-badge {
    position: absolute;
    bottom: 1.5rem;
    right: 1.5rem;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.badge-number {
    font-size: 2rem;
    font-weight: 900;
    color: var(--color-accent);
    line-height: 1;
}

.badge-text {
    font-size: 0.72rem;
    color: var(--color-text-muted);
    line-height: 1.3;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.youtube-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}
.youtube-card:hover {
    border-color: var(--color-youtube);
    background: var(--color-bg-card-hover);
    transform: translateY(-2px);
}

.youtube-card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: rgba(255, 0, 0, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-youtube);
    flex-shrink: 0;
}

.youtube-card strong {
    display: block;
    font-size: 0.95rem;
    color: var(--color-text);
}

.youtube-card span {
    display: block;
    font-size: 0.82rem;
    color: var(--color-text-muted);
    margin-top: 0.15rem;
}

.youtube-card > svg:last-child {
    margin-left: auto;
    color: var(--color-text-dim);
    flex-shrink: 0;
}

/* ===== COMPARISON TABLE ===== */
.section-why {
    border-top: 1px solid var(--color-border);
}

.comparison-table {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 3rem;
}

.comparison-col {
    border-radius: var(--radius-xl);
    padding: 2.5rem 2rem;
    border: 1px solid var(--color-border);
}

.comparison-others {
    background: var(--color-bg-card);
}

.comparison-simon {
    background: linear-gradient(145deg, rgba(245, 158, 11, 0.08), rgba(245, 158, 11, 0.02));
    border-color: rgba(245, 158, 11, 0.25);
}

.comparison-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-border);
}



.comparison-header h3 {
    font-size: 1.2rem;
    font-weight: 700;
}

.comparison-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.comparison-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    font-size: 0.92rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}
.comparison-list li strong {
    color: var(--color-text);
}

.check-x {
    color: var(--color-danger);
    flex-shrink: 0;
    margin-top: 2px;
}

.check-ok {
    color: var(--color-success);
    flex-shrink: 0;
    margin-top: 2px;
}

/* ===== STEPS ===== */
.section-steps {
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
}

.steps-grid {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-top: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.step-card {
    display: flex;
    gap: 2rem;
    padding: 2rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}
.step-card:hover {
    border-color: var(--color-accent);
    background: var(--color-bg-card-hover);
}

.step-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--color-accent);
    opacity: 0.3;
    line-height: 1;
    flex-shrink: 0;
    font-family: var(--font-display);
}
.step-card:hover .step-number {
    opacity: 0.8;
}

.step-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.step-content p {
    font-size: 0.92rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}
.step-content p strong {
    color: var(--color-text);
}

.step-connector {
    display: flex;
    justify-content: center;
    padding: 0.5rem 0;
    color: var(--color-text-dim);
}

/* ===== ZONE ===== */
.section-zone {
    border-top: 1px solid var(--color-border);
}

.zone-card {
    padding: 3rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    text-align: center;
}



.zone-card h2 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.zone-card p {
    max-width: 600px;
    margin: 0 auto 2rem;
    color: var(--color-text-muted);
    line-height: 1.8;
}
.zone-card p strong {
    color: var(--color-text);
}

.zone-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.6rem;
}

.zone-tag {
    padding: 0.4rem 1rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--color-border-light);
    border-radius: 100px;
    font-size: 0.82rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* ===== CTA SECTION ===== */
.section-cta {
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
    padding: var(--section-py) 0 calc(var(--section-py) + 2rem);
}

.cta-card {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(145deg, rgba(245, 158, 11, 0.06), rgba(245, 158, 11, 0.01));
    border: 1px solid rgba(245, 158, 11, 0.15);
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
}

.cta-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(245, 158, 11, 0.06), transparent 50%);
    pointer-events: none;
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.cta-text {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 2.5rem;
}
.cta-text strong {
    color: var(--color-text);
}

.cta-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-note {
    margin-top: 1.5rem;
    font-size: 0.82rem;
    color: var(--color-text-dim);
}

/* ===== FOOTER ===== */
.footer {
    padding: 3rem 0;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-brand .logo-icon {
    display: inline;
}

.footer-brand p {
    font-size: 0.82rem;
    color: var(--color-text-dim);
    line-height: 1.5;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-social {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    color: var(--color-text-muted);
    transition: all var(--transition);
}
.footer-social:hover {
    border-color: var(--color-text-dim);
    color: var(--color-text);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.78rem;
    color: var(--color-text-dim);
}

/* ===== WHATSAPP FLOAT ===== */
.whatsapp-float {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background: var(--color-whatsapp);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 4px 25px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: all var(--transition);
    animation: float-pulse 3s ease-in-out infinite;
}
.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 35px rgba(37, 211, 102, 0.5);
}

@keyframes float-pulse {
    0%, 100% { box-shadow: 0 4px 25px rgba(37, 211, 102, 0.4); }
    50% { box-shadow: 0 4px 35px rgba(37, 211, 102, 0.6); }
}

/* ===== ANIMATIONS (Scroll Triggered) ===== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger delays for grouped elements */
.problem-card:nth-child(1) { transition-delay: 0.05s; }
.problem-card:nth-child(2) { transition-delay: 0.15s; }
.problem-card:nth-child(3) { transition-delay: 0.25s; }

.credential:nth-child(1) { transition-delay: 0.05s; }
.credential:nth-child(2) { transition-delay: 0.12s; }
.credential:nth-child(3) { transition-delay: 0.19s; }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
    .nav-link {
        display: none;
    }
    .nav-mobile-toggle {
        display: none;
    }
    
    .problem-grid {
        grid-template-columns: 1fr;
    }
    
    .about-layout {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    
    .about-visual {
        order: -1;
    }
    
    .about-image-wrapper {
        aspect-ratio: 16/9;
    }
    
    .about-image-badge {
        padding: 0.5rem 0.75rem;
        bottom: 1rem;
        right: 1rem;
        gap: 0.4rem;
    }
    
    .badge-number {
        font-size: 1.3rem;
    }
    
    .badge-text {
        font-size: 0.6rem;
    }
    
    .comparison-table {
        grid-template-columns: 1fr;
    }
    
    .hero-stats {
        flex-direction: row;
        gap: 0.5rem;
        padding: 1rem 0.5rem;
    }
    
    .hero-stat {
        flex: 1 1 30%;
    }
    
    .hero-stat-number {
        font-size: 1.4rem;
    }
    
    .hero-stat-plus {
        font-size: 1rem;
    }
    
    .hero-stat-label {
        font-size: 0.65rem;
    }
    
    .hero-stat-divider {
        width: 1px;
        height: 30px;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
    
    .about-credentials {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 0.5rem;
    }
    
    .credential {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        text-align: center;
        padding: 1rem 0.5rem;
        font-size: 0.8rem;
        gap: 0.6rem;
    }
}

@media (max-width: 600px) {
    .hero-title {
        font-size: 2.4rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .step-card {
        flex-direction: column;
        gap: 1rem;
    }
    
    .cta-text br {
        display: none;
    }
    
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .zone-card {
        padding: 2rem 1.5rem;
    }
    
    .comparison-col {
        padding: 2rem 1.5rem;
    }
}