:root {
    --primary-color: #10b981;
    --primary-dark: #059669;
    --primary-light: #34d399;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Navigation */
.nav {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 16px 0;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 32px;
    width: auto;
    display: block;
}

.logo-text {
    font-size: 22px;
    font-weight: 600;
    color: var(--primary-color);
    letter-spacing: -0.3px;
}

@media (max-width: 480px) {
    .logo-text {
        display: none;
    }
    
    .logo-img {
        height: 28px;
    }
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    border-radius: 10px;
    transition: all 0.25s ease;
    border: none;
    cursor: pointer;
    font-family: inherit;
    letter-spacing: 0.2px;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.25);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
}

.btn-small {
    padding: 8px 16px;
    font-size: 14px;
}

.btn-large {
    padding: 16px 32px;
    font-size: 18px;
}

/* Hero Section */
.hero {
    padding: 60px 0 120px;
    background: linear-gradient(135deg, #f0fdf4 0%, #ffffff 100%);
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-logo-wrapper {
    margin-bottom: 32px;
    display: flex;
    justify-content: center;
}

.hero-logo {
    height: 80px;
    width: auto;
    display: block;
    filter: drop-shadow(0 4px 12px rgba(16, 185, 129, 0.15));
}

.hero-tagline {
    font-size: 16px;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    opacity: 0.9;
}

.hero-title {
    font-size: 52px;
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 28px;
    letter-spacing: -1.2px;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
    font-weight: 400;
}

.hero-description {
    font-size: 17px;
    color: var(--text-secondary);
    margin-bottom: 48px;
    font-weight: 400;
}

/* Section Styles */
section {
    padding: 90px 0;
}

.section-title {
    font-size: 38px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 32px;
    letter-spacing: -0.8px;
    color: var(--text-primary);
    line-height: 1.2;
}

.section-intro {
    font-size: 20px;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 48px;
}

/* Problem Section */
.problem {
    background: var(--bg-primary);
}

.problem-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
    margin-bottom: 48px;
}

.problem-item {
    text-align: center;
    padding: 36px 28px;
    background: var(--bg-secondary);
    border-radius: 14px;
    transition: transform 0.25s ease;
    border: 1px solid rgba(229, 231, 235, 0.5);
}

.problem-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.problem-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.problem-item h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.problem-conclusion {
    font-size: 17px;
    color: var(--text-secondary);
    text-align: center;
    max-width: 800px;
    margin: 0 auto 32px;
    line-height: 1.75;
    font-weight: 400;
}

.problem-accuracy {
    background: #fef2f2;
    border: 2px solid #fecaca;
    border-radius: 12px;
    padding: 32px;
    max-width: 900px;
    margin: 0 auto 32px;
    text-align: center;
}

.problem-accuracy-title {
    font-size: 20px;
    font-weight: 600;
    color: #991b1b;
    margin-bottom: 16px;
}

.problem-accuracy-text {
    font-size: 17px;
    color: #7f1d1d;
    line-height: 1.75;
    margin-bottom: 12px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.problem-accuracy-text strong {
    font-weight: 600;
    color: #991b1b;
}

.problem-accuracy-note {
    font-size: 15px;
    color: #991b1b;
    font-style: italic;
    font-weight: 500;
    margin-top: 12px;
}

.problem-solution {
    font-size: 19px;
    font-weight: 500;
    color: var(--text-primary);
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.5;
}

.link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.link:hover {
    text-decoration: underline;
}

/* Solution Section */
.solution {
    background: var(--bg-secondary);
}

.solution-intro {
    font-size: 26px;
    font-weight: 500;
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 28px;
    line-height: 1.4;
}

.solution-description {
    font-size: 19px;
    color: var(--text-secondary);
    text-align: center;
    max-width: 800px;
    margin: 0 auto 28px;
    line-height: 1.75;
    font-weight: 400;
}

.solution-value {
    font-size: 17px;
    color: var(--text-secondary);
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.75;
    font-weight: 400;
}

/* How It Works Section */
.how-it-works {
    background: var(--bg-primary);
    padding: 90px 0;
}

.how-it-works-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 60px;
    font-weight: 400;
}

.how-it-works-content {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 40px;
    align-items: start;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.steps-left,
.steps-right {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.step {
    position: relative;
    max-width: 280px;
}

.step-left {
    text-align: right;
    margin-left: auto;
}

.step-right {
    text-align: left;
}

.step-number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    font-size: 20px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.step-left .step-number {
    margin-right: 12px;
}

.step-right .step-number {
    margin-left: 0;
    margin-right: 8px;
}

.step-icon-inline {
    display: inline-block;
    margin-left: 8px;
    font-size: 18px;
}

.step-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
    display: inline-block;
}

.step-description {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 12px;
}

.step-icons {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.step-left .step-icons {
    justify-content: flex-end;
}

.step-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

/* Phone Mockup */
.phone-mockup {
    width: 280px;
    flex-shrink: 0;
    position: sticky;
    top: 100px;
    align-self: center;
    z-index: 1;
}

.phone-screen {
    background: white;
    border-radius: 24px;
    padding: 10px 8px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
    border: 3px solid #1f2937;
    overflow: hidden;
}

.phone-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.phone-status {
    display: flex;
    gap: 4px;
    font-size: 12px;
}

.phone-app-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px;
    border-bottom: 1px solid #e5e7eb;
    margin-bottom: 12px;
}

.phone-logo {
    width: 24px;
    height: 24px;
}

.phone-app-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-color);
}

.phone-content {
    padding: 12px;
}

.phone-meal {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.phone-meal-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.phone-remove {
    color: var(--text-light);
    font-size: 18px;
    cursor: pointer;
}

.phone-macros {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    font-size: 13px;
    color: var(--text-secondary);
}

.phone-macro {
    padding: 4px 8px;
    background: var(--bg-secondary);
    border-radius: 6px;
}

.phone-prompt {
    background: var(--bg-secondary);
    padding: 16px;
    border-radius: 10px;
    margin-bottom: 12px;
}

.phone-prompt-text {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.phone-calories {
    font-size: 14px;
    color: var(--text-secondary);
}

.phone-footer {
    padding: 12px;
    text-align: center;
    border-top: 1px solid #e5e7eb;
    margin-top: 12px;
}

.phone-done {
    font-size: 12px;
    color: var(--primary-color);
    font-weight: 500;
}

/* Step Connectors */
.step-connector {
    position: absolute;
    width: 2px;
    background: #9ca3af;
    z-index: 0;
    opacity: 0.6;
}

.step-connector-left {
    right: -20px;
    top: 24px;
    height: 60px;
    transform: rotate(15deg);
}

.step-connector-right {
    left: -20px;
    top: 24px;
    height: 60px;
    transform: rotate(-15deg);
}

.step[data-step="1"] .step-connector {
    height: 120px;
    transform: rotate(25deg);
}

.step[data-step="2"] .step-connector-left {
    height: 80px;
    transform: rotate(10deg);
}

.step[data-step="2"] .step-connector-right {
    height: 80px;
    transform: rotate(-10deg);
}

.step[data-step="3"] .step-connector {
    height: 100px;
    transform: rotate(-20deg);
}

.step[data-step="4"] .step-connector {
    height: 140px;
    transform: rotate(-30deg);
}

/* Features Section */
.features {
    background: var(--bg-secondary);
}

.features-list {
    max-width: 700px;
    margin: 0 auto;
}

.feature-item {
    display: flex;
    align-items: center;
    padding: 18px 24px;
    font-size: 17px;
    color: var(--text-primary);
    background: var(--bg-primary);
    border-radius: 10px;
    margin-bottom: 12px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid rgba(229, 231, 235, 0.6);
}

.feature-item:hover {
    transform: translateX(6px);
    box-shadow: var(--shadow-sm);
}

.feature-check {
    color: var(--primary-color);
    font-size: 24px;
    font-weight: 700;
    margin-right: 16px;
    flex-shrink: 0;
}

/* Why Matters Section */
.why-matters {
    background: var(--bg-primary);
}

.why-text {
    font-size: 18px;
    color: var(--text-secondary);
    text-align: center;
    max-width: 800px;
    margin: 0 auto 24px;
    line-height: 1.7;
}

.why-conclusion {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

/* Who It's For Section */
.who-its-for {
    background: var(--bg-secondary);
}

.who-intro {
    font-size: 20px;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 32px;
}

.who-list {
    max-width: 700px;
    margin: 0 auto;
}

.who-item {
    font-size: 17px;
    color: var(--text-primary);
    padding: 22px 28px;
    background: var(--bg-primary);
    border-radius: 10px;
    margin-bottom: 14px;
    border-left: 3px solid var(--primary-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    font-weight: 400;
}

.who-item:hover {
    transform: translateX(6px);
    box-shadow: var(--shadow-sm);
}

/* Final CTA Section */
.final-cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    text-align: center;
    padding: 110px 0;
    position: relative;
    overflow: hidden;
}

.cta-title {
    font-size: 44px;
    font-weight: 600;
    margin-bottom: 28px;
    letter-spacing: -0.9px;
    line-height: 1.2;
}

.cta-subtitle {
    font-size: 22px;
    margin-bottom: 40px;
    opacity: 0.95;
    line-height: 1.6;
}

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

.final-cta .btn-primary:hover {
    background: var(--bg-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Waitlist Section */
.waitlist {
    background: var(--bg-primary);
    padding: 100px 0;
}

.waitlist-description {
    font-size: 18px;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 40px;
}

.waitlist-form {
    max-width: 500px;
    margin: 0 auto;
}

.form-group {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.form-group input {
    flex: 1;
    padding: 15px 20px;
    font-size: 16px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-family: inherit;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    background: white;
}

.form-group input:focus {
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}


.form-group button {
    white-space: nowrap;
}

.form-note {
    font-size: 14px;
    color: var(--text-light);
    text-align: center;
}

/* Footer */
.footer {
    background: var(--bg-tertiary);
    padding: 32px 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-logo {
        height: 64px;
    }

    .hero-title {
        font-size: 38px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .section-title {
        font-size: 30px;
    }

    .cta-title {
        font-size: 34px;
    }

    .form-group {
        flex-direction: column;
    }

    .form-group button {
        width: 100%;
    }

    .how-it-works-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .phone-mockup {
        width: 240px;
        margin: 0 auto;
        order: 2;
        position: relative;
        top: 0;
    }

    .steps-left,
    .steps-right {
        order: 1;
    }

    .step-left,
    .step-right {
        text-align: center;
        max-width: 100%;
        margin: 0 auto;
    }

    .step-connector {
        display: none;
    }

    .problem-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 60px 0 80px;
    }

    .hero-title {
        font-size: 32px;
    }

    .section-title {
        font-size: 28px;
    }

    .container {
        padding: 0 16px;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

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

.hero-content {
    animation: fadeInUp 0.6s ease-out;
}