/* ============================================
   Satsuma Landing Page Styles
   ============================================ */

/* CSS Variables - Satsuma Brand Colors & Spacing */
:root {
    /* Colors */
    --color-teal: #08414E;
    --color-teal-light: #4DB3C5;
    --color-teal-lighter: #80C8D5;
    --color-teal-lightest: #E6F2F5;
    --color-teal-dark: #063239;

    --color-yellow: #EED455;
    --color-yellow-light: #F5ED97;
    --color-yellow-lighter: #FDF3CF;

    --color-cream: #F1F0CC;
    --color-soft-cream: #FEF9E7;

    --color-red: #F1445E;
    --color-red-light: #FDE8EB;

    /* Neutrals */
    --color-white: #FFFFFF;
    --color-gray-lightest: #F4F2F1;
    --color-gray-light: #D7CEC9;
    --color-gray-mid: #978F8A;
    --color-gray-dark: #3C3836;
    --color-black: #191015;

    /* Spacing - 8px grid system */
    --space-xxxs: 2px;
    --space-xxs: 4px;
    --space-xs: 8px;
    --space-sm: 12px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-xxl: 48px;
    --space-xxxl: 64px;

    /* Border Radius */
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 22px;
    --radius-full: 999px;

    /* Typography */
    --font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Container */
    --container-max-width: 1200px;
}

/* ============================================
   Global Styles & Reset
   ============================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-dark);
    background-color: var(--color-cream);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-xl);
    }
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-teal);
    margin-bottom: var(--space-lg);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(2rem, 4vw, 3.5rem);
}

h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    font-weight: 600;
}

p {
    margin-bottom: var(--space-md);
    color: var(--color-gray-dark);
}

.large-text {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    font-weight: 500;
    line-height: 1.5;
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-xxl);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-block;
    padding: var(--space-md) var(--space-xl);
    min-height: 56px;
    font-family: var(--font-family);
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-xs);
    cursor: pointer;
    transition: all 0.3s ease;
    line-height: 1.5;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
}

.btn-primary {
    background-color: var(--color-teal);
    color: var(--color-cream);
}

.btn-primary:hover {
    background-color: var(--color-teal-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(8, 65, 78, 0.2);
}

.btn-secondary {
    background-color: var(--color-yellow);
    color: var(--color-teal);
}

.btn-secondary:hover {
    background-color: var(--color-yellow-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(238, 212, 85, 0.3);
}

.btn-download {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: var(--space-md) var(--space-xl);
    font-size: 18px;
}

.btn-download:hover {
    background-color: var(--color-gray-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(25, 16, 21, 0.3);
}

.apple-icon {
    width: 24px;
    height: 24px;
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    padding: var(--space-xxxl) 0;
    background: linear-gradient(135deg, var(--color-cream) 0%, var(--color-soft-cream) 100%);
    position: relative;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xxl);
    align-items: center;
    position: relative;
}

@media (min-width: 968px) {
    .hero .container {
        grid-template-columns: 1fr 1fr;
    }
}

.hero-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    grid-column: 1 / -1;
}

.hero-logo i {
    font-size: 32px;
    color: var(--color-teal);
}

.hero-logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-teal);
}

@media (min-width: 968px) {
    .hero-logo {
        position: absolute;
        top: 0;
        left: 0;
        margin-bottom: 0;
    }
}

.hero-content {
    z-index: 2;
    margin-top: var(--space-xxl);
}

@media (min-width: 968px) {
    .hero-content {
        margin-top: var(--space-xxxl);
    }
}

.hero-title {
    margin-bottom: var(--space-lg);
    animation: fadeInUp 0.8s ease-out;
}

.title-line {
    display: block;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    line-height: 1.6;
    margin-bottom: var(--space-xl);
    color: var(--color-gray-dark);
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInScale 1s ease-out 0.6s backwards;
}

/* ============================================
   Orb Styles (Primary Visual Device)
   ============================================ */

.orb-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
}

.orb-svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 12px 40px rgba(238, 212, 85, 0.3));
    overflow: visible;
    background: transparent;
}

/* Hero Orb */
.orb-hero {
    width: clamp(280px, 40vw, 400px);
    height: clamp(280px, 40vw, 400px);
    background: transparent;
}

.orb-hero .orb-svg {
    animation: orbPulse 4s ease-in-out infinite;
}

.hero-visual {
    background: transparent;
}

.orb-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
    max-width: 200px;
    pointer-events: none;
}

.orb-count {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    color: var(--color-teal);
    line-height: 1;
}

.orb-instruction {
    font-size: clamp(0.875rem, 1.5vw, 1.125rem);
    color: var(--color-teal);
    font-weight: 400;
}

.orb-achievement {
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 700;
    color: var(--color-teal);
    line-height: 1;
}

.orb-achievement-label {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-teal);
    font-weight: 500;
}

/* Small Orb */
.orb-small {
    width: 120px;
    height: 120px;
    background: transparent;
}

/* Medium Orb */
.orb-medium {
    width: clamp(200px, 30vw, 300px);
    height: clamp(200px, 30vw, 300px);
    background: transparent;
}

.orb-medium .orb-svg {
    animation: orbFloat 6s ease-in-out infinite;
}

/* Large Orb */
.orb-large {
    width: clamp(250px, 35vw, 350px);
    height: clamp(250px, 35vw, 350px);
    background: transparent;
}

.feature-orb {
    background: transparent;
}

.difference-visual {
    background: transparent;
}

.results-visual {
    background: transparent;
}

/* Blob layers - overlapping shapes with rotation */
.blob-group {
    transform-origin: center;
}

.blob-layer-1 {
    animation: blobRotate1 40s linear infinite;
}

.blob-layer-2 {
    animation: blobRotate2 50s linear infinite reverse;
}

.blob-layer-3 {
    animation: blobRotate3 60s linear infinite;
}

.blob-path {
    transition: d 0.3s ease;
}

/* ============================================
   Problem Section
   ============================================ */

.problem-section {
    padding: var(--space-xxxl) 0;
    background-color: var(--color-white);
}

.symptoms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xxl);
}

.symptom-card {
    background-color: var(--color-teal);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: 0 12px 24px rgba(8, 65, 78, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.symptom-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 32px rgba(8, 65, 78, 0.15);
}

.symptom-card h3 {
    color: var(--color-yellow);
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.symptom-card p {
    color: var(--color-cream);
    margin-bottom: 0;
}

.problem-statement {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    color: var(--color-gray-dark);
    font-weight: 400;
    line-height: 1.6;
}

/* ============================================
   How It Works Section
   ============================================ */

.how-it-works-section {
    padding: var(--space-xxxl) 0;
    background-color: var(--color-cream);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
}

@media (min-width: 768px) and (max-width: 1100px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1100px) {
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.feature-card {
    background-color: var(--color-white);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 16px rgba(25, 16, 21, 0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(25, 16, 21, 0.1);
}

.feature-orb {
    margin-bottom: var(--space-lg);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    height: 120px;
}

.feature-visual {
    margin-bottom: var(--space-lg);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    height: 120px;
}

.calendar-icon {
    width: auto;
    height: 120px;
}

.chart-icon {
    width: auto;
    height: 80px;
}

.streak-visual {
    background-color: var(--color-yellow);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 200px;
}

.streak-number {
    font-size: 4rem;
    font-weight: 700;
    color: var(--color-teal);
    line-height: 1;
}

.streak-label {
    font-size: 1.125rem;
    color: var(--color-teal);
    font-weight: 500;
    margin-top: var(--space-xs);
}

.feature-card h3 {
    color: var(--color-teal);
    margin-bottom: var(--space-md);
}

.feature-card p {
    color: var(--color-gray-dark);
    margin-bottom: 0;
}

/* ============================================
   Difference Section
   ============================================ */

.difference-section {
    padding: var(--space-xxxl) 0;
    background-color: var(--color-white);
}

.difference-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xxl);
    align-items: center;
}

@media (min-width: 968px) {
    .difference-content {
        grid-template-columns: 1fr 1fr;
    }
}

.difference-text h2 {
    text-align: left;
    margin-bottom: var(--space-lg);
}

.backed-by {
    margin-top: var(--space-xl);
    padding: var(--space-lg);
    background-color: var(--color-teal-lightest);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-teal);
}

.backed-by h3 {
    color: var(--color-teal);
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.backed-by p {
    margin-bottom: 0;
}

.difference-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* ============================================
   Features List Section
   ============================================ */

.features-list-section {
    padding: var(--space-xxxl) 0;
    background-color: var(--color-teal);
}

.features-list-section .section-title {
    color: var(--color-yellow);
}

.features-columns {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    max-width: 900px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .features-columns {
        grid-template-columns: 1fr 1fr;
    }
}

.features-list {
    list-style: none;
    padding: 0;
}

.features-list li {
    padding: var(--space-md) 0;
    padding-left: var(--space-xl);
    color: var(--color-cream);
    font-size: 1.125rem;
    line-height: 1.6;
    position: relative;
}

.features-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background-color: var(--color-yellow);
    border-radius: 50%;
}

/* ============================================
   Results Section
   ============================================ */

.results-section {
    padding: var(--space-xxxl) 0;
    background-color: var(--color-cream);
    text-align: center;
}

.results-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: var(--color-gray-dark);
    margin-bottom: var(--space-xxl);
}

.results-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* ============================================
   Download Section
   ============================================ */

.download-section {
    padding: var(--space-xxxl) 0;
    background: linear-gradient(135deg, var(--color-teal) 0%, var(--color-teal-dark) 100%);
}

.download-card {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    padding: var(--space-xxl);
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

.download-card h2 {
    color: var(--color-yellow);
    margin-bottom: var(--space-lg);
}

.download-card p {
    color: var(--color-cream);
    font-size: 1.125rem;
    margin-bottom: var(--space-xl);
}

.download-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background-color: var(--color-teal-dark);
    padding: var(--space-xxl) 0;
    color: var(--color-cream);
}

.footer-content {
    text-align: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.footer-logo {
    font-size: 40px;
    color: var(--color-yellow);
}

.footer-brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-yellow);
}

.footer-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.footer-nav a {
    color: var(--color-cream);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.footer-nav a:hover {
    color: var(--color-yellow);
}

.footer-copyright {
    color: var(--color-gray-light);
    font-size: 0.875rem;
    margin-bottom: 0;
}

/* ============================================
   Animations
   ============================================ */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes orbPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes orbFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes pulseGrow {
    0%, 100% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.3;
        transform: translate(-50%, -50%) scale(1.2);
    }
}

@keyframes blobRotate1 {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes blobRotate2 {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes blobRotate3 {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Reveal animation for scroll-triggered elements */
[data-reveal] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   Responsive Adjustments
   ============================================ */

@media (max-width: 767px) {
    .hero {
        min-height: auto;
        padding: var(--space-xxl) 0;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .cta-buttons .btn {
        width: 100%;
    }

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

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

/* ============================================
   Modal System
   ============================================ */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(25, 16, 21, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    padding: var(--space-md);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-container {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    max-width: 700px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    padding: var(--space-xxl);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal-container {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: none;
    border: none;
    font-size: 24px;
    color: var(--color-gray-dark);
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-xs);
    transition: background-color 0.2s ease, color 0.2s ease;
}

.modal-close:hover {
    background-color: var(--color-gray-lightest);
    color: var(--color-teal);
}

.modal-content {
    padding-right: var(--space-lg);
}

.modal-content h2 {
    color: var(--color-teal);
    margin-bottom: var(--space-md);
    margin-top: 0;
}

.modal-content h3 {
    color: var(--color-teal);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
    font-size: 1.25rem;
}

.modal-content h4 {
    color: var(--color-teal);
    margin-top: var(--space-lg);
    margin-bottom: var(--space-sm);
    font-size: 1.125rem;
    font-weight: 600;
}

.modal-content p {
    margin-bottom: var(--space-md);
    line-height: 1.6;
}

.modal-content ul {
    margin-bottom: var(--space-lg);
    padding-left: var(--space-xl);
}

.modal-content li {
    margin-bottom: var(--space-xs);
    line-height: 1.6;
}

.modal-content a {
    color: var(--color-teal);
    text-decoration: underline;
    transition: color 0.2s ease;
}

.modal-content a:hover {
    color: var(--color-teal-dark);
}

.modal-date {
    color: var(--color-gray-mid);
    font-size: 0.875rem;
    font-style: italic;
    margin-bottom: var(--space-lg);
}

/* Scrollbar styling for modal */
.modal-container::-webkit-scrollbar {
    width: 8px;
}

.modal-container::-webkit-scrollbar-track {
    background: var(--color-gray-lightest);
    border-radius: var(--radius-xs);
}

.modal-container::-webkit-scrollbar-thumb {
    background: var(--color-gray-light);
    border-radius: var(--radius-xs);
}

.modal-container::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-mid);
}

@media (max-width: 767px) {
    .modal-container {
        padding: var(--space-lg);
        max-height: 90vh;
    }

    .modal-content {
        padding-right: 0;
    }
}

/* ============================================
   Accessibility
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}