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

:root {
    --black: #000000;
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --amber-400: #fbbf24;
    --amber-500: #f59e0b;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-feature-settings: "cv11", "ss01";
    color: var(--black);
    background: var(--white);
    line-height: 1.6;
    letter-spacing: -0.01em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

/* ===== UTILITIES ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

.section-dark {
    background: var(--black);
    color: var(--white);
}

.section-light {
    background: var(--gray-50);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 64px;
}

.section-header.light h2,
.section-header.light p {
    color: var(--white);
}

.section-header.light p {
    color: var(--gray-300);
}

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gray-500);
    margin-bottom: 16px;
    padding: 6px 16px;
    border: 1px solid var(--gray-200);
    border-radius: 100px;
}

.section-dark .section-tag {
    color: var(--gray-400);
    border-color: var(--gray-700);
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 300;
    letter-spacing: -0.03em;
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--gray-600);
    font-weight: 300;
    line-height: 1.6;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--black);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--gray-800);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

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

.btn-outline:hover {
    background: var(--black);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-white {
    background: var(--white);
    color: var(--black);
}

.btn-white:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.0625rem;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ===== NAVIGATION ===== */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

#navbar.scrolled {
    border-bottom-color: var(--gray-200);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: var(--black);
    color: var(--white);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 700;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.9375rem;
    font-weight: 400;
    color: var(--gray-600);
    transition: color 0.2s;
    letter-spacing: -0.01em;
}

.nav-links a:hover {
    color: var(--black);
}

.nav-cta {
    background: var(--black) !important;
    color: var(--white) !important;
    padding: 10px 24px !important;
    border-radius: var(--radius) !important;
}

.nav-cta:hover {
    background: var(--gray-800) !important;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--black);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 120px 24px 80px;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--gray-500);
    margin-bottom: 32px;
    padding: 8px 20px;
    border: 1px solid var(--gray-200);
    border-radius: 100px;
    animation: fadeInUp 0.8s ease forwards;
}

.hero h1 {
    font-size: clamp(3rem, 7vw, 5rem);
    font-weight: 300;
    letter-spacing: -0.04em;
    line-height: 1.1;
    margin-bottom: 32px;
}

.hero-title-line {
    display: block;
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

.hero-title-line:nth-child(1) { animation-delay: 0.1s; }
.hero-title-line:nth-child(2) { animation-delay: 0.2s; }
.hero-title-line:nth-child(3) { animation-delay: 0.3s; }

.hero-title-line.accent {
    background: linear-gradient(135deg, #000000, #404040);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 400;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--gray-600);
    max-width: 700px;
    margin: 0 auto 40px;
    font-weight: 300;
    line-height: 1.7;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}

.hero-subtitle strong {
    color: var(--black);
    font-weight: 600;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.5s forwards;
    opacity: 0;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    margin-top: 64px;
    animation: fadeInUp 0.8s ease 0.6s forwards;
    opacity: 0;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 300;
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--gray-400);
    font-weight: 400;
    letter-spacing: 0.02em;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--gray-200);
}

.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 40px;
    border: 2px solid var(--gray-300);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
    animation: fadeInUp 0.8s ease 0.7s forwards;
    opacity: 0;
}

.scroll-dot {
    width: 4px;
    height: 8px;
    background: var(--gray-400);
    border-radius: 2px;
    animation: scrollBounce 2s ease infinite;
}

/* ===== SOLUTIONS ===== */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.solution-card {
    padding: 40px 32px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    transition: var(--transition);
    position: relative;
}

.solution-card:hover {
    border-color: var(--gray-300);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.solution-card.featured {
    border-color: var(--black);
    background: var(--black);
    color: var(--white);
}

.solution-card.featured .solution-features li {
    color: var(--gray-300);
}

.solution-card.featured .solution-features li::before {
    color: var(--amber-400);
}

.solution-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
}

.solution-card.featured .solution-icon {
    background: var(--gray-800);
}

.solution-card h3 {
    font-size: 1.375rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.solution-card > p {
    color: var(--gray-600);
    font-size: 0.9375rem;
    font-weight: 300;
    line-height: 1.6;
    margin-bottom: 24px;
}

.solution-card.featured > p {
    color: var(--gray-300);
}

.solution-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.solution-features li {
    font-size: 0.875rem;
    color: var(--gray-600);
    display: flex;
    align-items: center;
    gap: 8px;
}

.solution-features li::before {
    content: "→";
    color: var(--black);
    font-weight: 500;
}

/* ===== PAIN POINTS ===== */
.painpoints-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.painpoint {
    padding: 32px;
    border: 1px solid var(--gray-800);
    border-radius: var(--radius-xl);
    transition: var(--transition);
}

.painpoint:hover {
    border-color: var(--gray-600);
    transform: translateY(-4px);
}

.painpoint-number {
    font-size: 2.5rem;
    font-weight: 200;
    color: var(--gray-600);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.painpoint h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.painpoint p {
    font-size: 0.9375rem;
    color: var(--gray-400);
    font-weight: 300;
    line-height: 1.6;
}

/* ===== ABOUT ===== */
.about-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-content .section-tag {
    margin-bottom: 20px;
}

.about-content h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 300;
    letter-spacing: -0.03em;
    line-height: 1.2;
    margin-bottom: 24px;
}

.about-content p {
    color: var(--gray-600);
    font-size: 1.0625rem;
    font-weight: 300;
    line-height: 1.7;
    margin-bottom: 16px;
}

.about-content .btn {
    margin-top: 16px;
}

.about-visual {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.about-card {
    padding: 32px;
    background: var(--gray-50);
    border-radius: var(--radius-xl);
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
}

.about-card-icon {
    margin-bottom: 16px;
    color: var(--gray-400);
}

.about-card h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.about-card p {
    font-size: 0.9375rem;
    color: var(--gray-500);
    font-weight: 300;
}

/* ===== TOOLS ===== */
.tools-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 800px;
    margin: 0 auto;
}

.tool-card {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 28px 32px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    transition: var(--transition);
    cursor: pointer;
}

.tool-card:hover {
    border-color: var(--gray-300);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
}

.tool-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    flex-shrink: 0;
    color: var(--gray-600);
}

.tool-info {
    flex: 1;
}

.tool-info h4 {
    font-size: 1.0625rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.tool-info p {
    font-size: 0.875rem;
    color: var(--gray-500);
    font-weight: 300;
}

.tool-status {
    display: inline-block;
    margin-top: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--amber-500);
    background: rgba(245, 158, 11, 0.1);
    padding: 4px 12px;
    border-radius: 100px;
}

.tool-arrow {
    color: var(--gray-400);
    transition: var(--transition);
    flex-shrink: 0;
}

.tool-card:hover .tool-arrow {
    color: var(--black);
    transform: translateX(4px);
}

/* ===== CTA ===== */
.section-cta {
    background: var(--black);
    color: var(--white);
    text-align: center;
    padding: 120px 0;
}

.cta-content h2 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 300;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 1.125rem;
    color: var(--gray-300);
    font-weight: 300;
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

/* ===== CONTACT ===== */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-info .section-tag {
    margin-bottom: 20px;
}

.contact-info h2 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 300;
    letter-spacing: -0.03em;
    line-height: 1.2;
    margin-bottom: 16px;
}

.contact-info > p {
    color: var(--gray-600);
    font-size: 1.0625rem;
    font-weight: 300;
    line-height: 1.7;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-detail {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9375rem;
    color: var(--gray-600);
}

.contact-detail svg {
    color: var(--gray-400);
    flex-shrink: 0;
}

.contact-form-wrapper {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: 40px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
}

.form-group input,
.form-group textarea {
    padding: 12px 16px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 0.9375rem;
    font-family: inherit;
    transition: border-color 0.2s;
    color: var(--black);
    background: var(--white);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-400);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--black);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.05);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    padding: 64px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 64px;
    margin-bottom: 48px;
}

.footer-brand p {
    color: var(--gray-500);
    font-size: 0.875rem;
    font-weight: 300;
    margin-top: 12px;
    max-width: 300px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links h5 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.footer-links a {
    font-size: 0.875rem;
    color: var(--gray-500);
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--black);
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--gray-200);
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: var(--gray-400);
}

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

@keyframes scrollBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .solutions-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

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

    .about-layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .contact-layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 80px 0;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--gray-200);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-cta {
        text-align: center;
    }

    .mobile-toggle {
        display: flex;
    }

    .hero {
        min-height: auto;
        padding: 140px 24px 80px;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-stats {
        gap: 20px;
    }

    .stat-value {
        font-size: 1.25rem;
    }

    .solutions-grid {
        gap: 16px;
    }

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

    .section-cta {
        padding: 80px 0;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .contact-form-wrapper {
        padding: 24px;
    }

    .scroll-indicator {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }
}