/* ============================================
   FLIP - Hackathon Demo Landing Page
   Mobile-First · Premium Animations · Apple-Level Polish
   ============================================ */

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

:root {
    /* Your beautiful colors - keeping them! */
    --green: #00D95F;
    --dark-green: #00A843;
    --black: #0A0A0A;
    --white: #FEFEFE;
    --gray: #6B7280;
    
    /* Spacing */
    --container-padding: clamp(1rem, 5vw, 2rem);
    --section-gap: clamp(3rem, 8vw, 6rem);
    
    /* Typography */
    --font-body: -apple-system, BlinkMacSystemFont, 'Inter', 'SF Pro Text', system-ui, sans-serif;
    --font-display: 'Archivo Black', -apple-system, sans-serif;
    
    /* Animations */
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

body {
    font-family: var(--font-body);
    background: var(--white);
    color: var(--black);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Improve tap targets */
a, button {
    -webkit-tap-highlight-color: rgba(0, 217, 95, 0.2);
}

/* ============================================
   SCROLL PROGRESS BAR
   ============================================ */

.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--green), var(--dark-green));
    transform-origin: left;
    transform: scaleX(0);
    transition: transform 0.1s linear;
    z-index: 10000;
    width: 100%;
}

/* ============================================
   HEADER - MOBILE FIRST
   ============================================ */

header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--black);
    color: var(--white);
    z-index: 1000;
    border-bottom: 3px solid var(--green);
    backdrop-filter: blur(12px);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.875rem var(--container-padding);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 5vw, 1.75rem);
    letter-spacing: -0.5px;
    text-decoration: none;
    color: var(--green);
    text-transform: uppercase;
    position: relative;
    z-index: 1001;
    transition: transform 0.2s var(--ease-smooth);
    display: flex;
    align-items: center;
}

.logo-img {
    height: 40px;
    width: auto;
    display: block;
    transition: transform 0.2s var(--ease-smooth);
}

.logo:hover .logo-img {
    transform: scale(1.05);
}

.logo:active {
    transform: scale(0.96);
}

/* Desktop nav - hidden on mobile */
.desktop-nav {
    display: none;
}

.btn-header {
    background: var(--green);
    color: var(--black);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.2s var(--ease-smooth);
    text-decoration: none;
    display: inline-block;
    border: none;
}

/* ============================================
   PREMIUM HAMBURGER MENU
   ============================================ */

.hamburger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    position: relative;
    z-index: 1001;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

.hamburger-line {
    width: 24px;
    height: 2px;
    background: var(--green);
    border-radius: 2px;
    transition: all 0.25s cubic-bezier(0.645, 0.045, 0.355, 1);
    position: absolute;
}

.hamburger-line:nth-child(1) {
    transform: translateY(-7px);
}

.hamburger-line:nth-child(2) {
    transform: translateY(0);
}

.hamburger-line:nth-child(3) {
    transform: translateY(7px);
}

/* Hamburger active state (X) */
.hamburger.active .hamburger-line:nth-child(1) {
    transform: translateY(0) rotate(45deg);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: translateY(0) rotate(-45deg);
}

/* ============================================
   MOBILE MENU OVERLAY
   ============================================ */

.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s var(--ease-smooth);
    z-index: 998;
}

.menu-overlay.active {
    opacity: 1;
    pointer-events: all;
}

/* ============================================
   MOBILE MENU
   ============================================ */

.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(85vw, 320px);
    background: var(--black);
    border-left: 3px solid var(--green);
    padding-top: 80px;
    transform: translateX(100%);
    transition: transform 0.3s var(--ease-smooth);
    z-index: 999;
    overflow-y: auto;
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-menu ul {
    list-style: none;
    padding: 2rem 0;
}

.mobile-menu li {
    opacity: 0;
    transform: translateX(20px);
    transition: all 0.3s var(--ease-smooth);
}

.mobile-menu.active li {
    opacity: 1;
    transform: translateX(0);
    transition-delay: calc(0.08s * var(--i));
}

.mobile-menu a {
    display: block;
    padding: 1.25rem 2rem;
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.125rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border-bottom: 1px solid rgba(0, 217, 95, 0.15);
    transition: all 0.2s var(--ease-smooth);
}

.mobile-menu a:hover,
.mobile-menu a:active {
    background: var(--green);
    color: var(--black);
    padding-left: 2.5rem;
}

/* ============================================
   HERO SECTION - MOBILE FIRST
   ============================================ */

.hero {
    min-height: 100vh;
    min-height: 100svh; /* iOS Safari support */
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 60px;
    background: linear-gradient(135deg, var(--white) 0%, #f8f9fa 100%);
    position: relative;
    overflow: hidden;
}

/* Subtle animated gradient */
.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -30%;
    width: 100%;
    height: 140%;
    background: linear-gradient(135deg, var(--green) 0%, var(--dark-green) 100%);
    transform: rotate(15deg);
    opacity: 0.06;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: rotate(15deg) translateY(0); }
    50% { transform: rotate(15deg) translateY(-20px); }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--section-gap) var(--container-padding);
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-content {
    max-width: 720px;
}

/* Hackathon badges */
.hackathon-badges {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.badge {
    display: inline-block;
    background: var(--black);
    color: var(--green);
    padding: 0.5rem 1rem;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 1.5px;
    border: 2px solid var(--green);
    border-radius: 4px;
}

.badge-secondary {
    background: var(--green);
    color: var(--black);
    border-color: var(--black);
}

h1 {
    font-family: var(--font-display);
    font-size: clamp(3rem, 12vw, 4.5rem);
    line-height: 0.95;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    letter-spacing: -2px;
}

h1 .highlight {
    color: var(--green);
    display: block;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 4vw, 1.25rem);
    line-height: 1.6;
    margin-bottom: 2rem;
    font-weight: 500;
    opacity: 0.9;
}

/* Hero Stats */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1.5rem 0;
    border-top: 2px solid var(--black);
    border-bottom: 2px solid var(--black);
}

.stat {
    text-align: center;
}

.stat-number {
    font-family: var(--font-display);
    font-size: clamp(2rem, 6vw, 3rem);
    line-height: 1;
    margin-bottom: 0.5rem;
    color: var(--green);
}

.stat-label {
    text-transform: uppercase;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    opacity: 0.8;
}

/* Quick Links */
.quick-links {
    display: flex;
    gap: 1.5rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.quick-link {
    color: var(--black);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    opacity: 0.7;
    transition: all 0.2s var(--ease-smooth);
    border-bottom: 2px solid transparent;
}

.quick-link:hover {
    opacity: 1;
    color: var(--green);
    border-bottom-color: var(--green);
}

/* ============================================
   IPHONE DEMO IMAGE - SIMPLIFIED
   ============================================ */

.phone-mockup {
    display: none; /* Hidden on mobile, shown on desktop */
    position: relative;
    max-width: 400px;
    margin: 0 auto;
}

.phone-demo-img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 30px;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(0, 0, 0, 0.1);
    animation: float-phone 6s ease-in-out infinite;
}

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

/* Floating labels */
.floating-label {
    position: absolute;
    background: var(--green);
    color: var(--black);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(0, 217, 95, 0.4);
    white-space: nowrap;
    animation: float-label 3s ease-in-out infinite;
}

.label-top {
    top: -10px;
    left: -60px;
}

.label-bottom {
    bottom: -10px;
    right: -60px;
    animation-delay: 1.5s;
}

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

/* ============================================
   DEMO SECTION
   ============================================ */

.demo-section {
    padding: var(--section-gap) var(--container-padding);
    background: #f8f9fa;
}

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

.demo-card {
    background: white;
    padding: 2rem 1.5rem;
    border-radius: 16px;
    border: 2px solid var(--black);
    transition: all 0.3s var(--ease-smooth);
    text-align: center;
}

.demo-card:hover {
    border-color: var(--green);
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 217, 95, 0.15);
}

.demo-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.demo-card h3 {
    font-size: 1.35rem;
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.demo-card p {
    color: var(--gray);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* ============================================
   TECH STACK SECTION
   ============================================ */

.tech-stack {
    padding: var(--section-gap) var(--container-padding);
    background: var(--black);
    color: var(--white);
    position: relative;
}

.tech-stack::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--green);
}

.tech-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    margin-top: 3rem;
}

.tech-category h3 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    color: var(--green);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 700;
}

.tech-items {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.tech-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.875rem 1.25rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    transition: all 0.3s var(--ease-smooth);
    font-weight: 500;
}

.tech-item:hover {
    background: rgba(0, 217, 95, 0.1);
    border-color: var(--green);
    transform: translateX(8px);
    color: var(--green);
}

/* ============================================
   PROBLEM SECTION
   ============================================ */

.problem-section {
    padding: var(--section-gap) var(--container-padding);
    background: var(--black);
    color: var(--white);
    position: relative;
}

.problem-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--green);
}

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

.problem-card {
    background: rgba(255, 255, 255, 0.03);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 2rem 1.5rem;
    text-align: center;
    transition: all 0.3s var(--ease-smooth);
}

.problem-card:hover {
    background: rgba(0, 217, 95, 0.1);
    border-color: var(--green);
    transform: translateY(-4px);
}

.problem-number {
    font-family: var(--font-display);
    font-size: clamp(3rem, 10vw, 5rem);
    line-height: 1;
    color: var(--green);
    margin-bottom: 1rem;
}

.problem-card h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
    letter-spacing: -0.5px;
}

.problem-card p {
    line-height: 1.7;
    opacity: 0.85;
    font-size: 0.95rem;
}

/* ============================================
   BUTTONS - MOBILE OPTIMIZED
   ============================================ */

.cta-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 1rem 2rem;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
    text-decoration: none;
    text-align: center;
    border-radius: 50px;
    transition: all 0.2s var(--ease-smooth);
    cursor: pointer;
    border: 2px solid var(--black);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
}

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

.btn-primary:hover,
.btn-primary:active {
    transform: scale(1.03);
    box-shadow: 0 6px 20px rgba(0, 217, 95, 0.3);
}

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

.btn-secondary:hover,
.btn-secondary:active {
    background: var(--black);
    color: var(--white);
    transform: scale(1.03);
}

/* ============================================
   DEMO FLOW SECTION
   ============================================ */

.demo-flow {
    padding: var(--section-gap) var(--container-padding);
    background: var(--black);
    color: var(--white);
    position: relative;
}

.demo-flow::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--green);
}

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

.section-header {
    margin-bottom: 3rem;
    text-align: center;
}

.section-label {
    color: var(--green);
    text-transform: uppercase;
    font-weight: 700;
    font-size: 0.75rem;
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 8vw, 3.5rem);
    line-height: 1.1;
    text-transform: uppercase;
    letter-spacing: -1.5px;
    margin-bottom: 1.5rem;
}

.section-description {
    font-size: clamp(1rem, 3.5vw, 1.2rem);
    line-height: 1.7;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   STEPS FLOW - MOBILE FIRST
   ============================================ */

.steps-flow {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
}

.step-card {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(0, 217, 95, 0.2);
    border-radius: 16px;
    padding: 2rem 1.5rem;
    text-align: center;
    width: 100%;
    max-width: 400px;
    transition: all 0.3s var(--ease-smooth);
}

.step-card:hover {
    background: rgba(0, 217, 95, 0.1);
    border-color: var(--green);
    transform: translateY(-4px);
}

.step-number {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--green);
    margin-bottom: 0.75rem;
}

.step-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.step-card h3 {
    font-family: var(--font-display);
    font-size: 1.35rem;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
    letter-spacing: -0.5px;
}

.step-card p {
    line-height: 1.7;
    opacity: 0.85;
    font-size: 0.95rem;
}

.flow-arrow {
    font-size: 2rem;
    color: var(--green);
    transform: rotate(90deg);
    opacity: 0.5;
}

/* ============================================
   GLASS MORPHISM EFFECT
   ============================================ */

.glass {
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

/* ============================================
   IMPACT SECTION
   ============================================ */

.impact-section {
    padding: var(--section-gap) var(--container-padding);
    background: var(--white);
    position: relative;
}

.impact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--black);
}

.impact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.impact-stat {
    background: rgba(0, 217, 95, 0.05);
    border: 2px solid var(--black);
    border-radius: 12px;
    padding: 2rem 1.5rem;
    text-align: center;
    transition: all 0.3s var(--ease-smooth);
}

.impact-stat:hover {
    background: var(--green);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 217, 95, 0.2);
}

.impact-number {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 10vw, 4rem);
    line-height: 1;
    color: var(--green);
    margin-bottom: 0.5rem;
}

.impact-stat:hover .impact-number {
    color: var(--black);
}

.impact-label {
    text-transform: uppercase;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}

.impact-stat p {
    line-height: 1.6;
    opacity: 0.8;
    font-size: 0.95rem;
}

/* ============================================
   CTA SECTION
   ============================================ */

.cta {
    background: var(--green);
    color: var(--black);
    padding: var(--section-gap) var(--container-padding);
    text-align: center;
    position: relative;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--black);
}

.cta-container {
    max-width: 800px;
    margin: 0 auto;
}

.cta h2 {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 10vw, 4rem);
    line-height: 1;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    letter-spacing: -2px;
}

.cta-description {
    font-size: clamp(1.1rem, 4vw, 1.35rem);
    line-height: 1.6;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.cta-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

.btn-cta {
    background: var(--black);
    color: var(--white);
    padding: 1rem 2rem;
    border: 2px solid var(--black);
    border-radius: 50px;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.2s var(--ease-smooth);
    text-decoration: none;
    display: inline-block;
    width: 100%;
    max-width: 300px;
}

.btn-cta:hover,
.btn-cta:active {
    background: var(--white);
    color: var(--black);
    transform: scale(1.03);
}

.btn-outline {
    background: transparent;
    color: var(--black);
    border: 2px solid var(--black);
}

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

/* Stats Banner in CTA */
.stats-banner {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    padding-top: 3rem;
    margin-top: 3rem;
    border-top: 3px solid var(--black);
}

.stat-block {
    text-align: center;
    padding: 1.5rem;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 12px;
    transition: all 0.3s var(--ease-smooth);
}

.stat-block:hover {
    background: var(--black);
    color: var(--white);
    transform: translateY(-4px);
}

.stat-block-value {
    font-family: var(--font-display);
    font-size: clamp(2rem, 8vw, 3rem);
    line-height: 1;
    margin-bottom: 0.75rem;
}

.stat-block-label {
    text-transform: uppercase;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1px;
    opacity: 0.8;
}

/* ============================================
   FOOTER
   ============================================ */

footer {
    background: var(--black);
    color: var(--white);
    padding: 3rem var(--container-padding) 2rem;
    border-top: 4px solid var(--green);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-brand .logo {
    margin-bottom: 1rem;
    display: block;
}

.footer-brand .logo-img {
    height: 50px;
    width: auto;
}

.footer-brand p {
    line-height: 1.7;
    opacity: 0.7;
    font-size: 0.95rem;
}

.footer-section h4 {
    font-family: var(--font-display);
    text-transform: uppercase;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    color: var(--green);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.7;
    transition: all 0.2s var(--ease-smooth);
    font-size: 0.9rem;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--green);
    padding-left: 0.5rem;
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    text-align: center;
    opacity: 0.5;
    font-size: 0.85rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-bottom-links {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.footer-bottom-links a {
    color: var(--white);
    text-decoration: none;
    text-transform: uppercase;
    font-size: 0.75rem;
    font-weight: 600;
    transition: color 0.2s var(--ease-smooth);
}

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

/* ============================================
   FADE-IN ANIMATIONS
   ============================================ */

.fade-in {
    animation: fadeIn 0.8s var(--ease-smooth) forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s var(--ease-smooth);
    transition-delay: var(--delay, 0s);
}

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

/* ============================================
   TABLET BREAKPOINT (768px+)
   ============================================ */

@media (min-width: 768px) {
    .cta-group,
    .cta-actions {
        flex-direction: row;
        justify-content: center;
    }
    
    .btn-primary,
    .btn-secondary,
    .btn-cta {
        width: auto;
    }
    
    .steps-flow {
        flex-direction: row;
        justify-content: center;
        align-items: center;
    }
    
    .flow-arrow {
        transform: rotate(0);
        margin: 0 1rem;
    }
    
    .step-card {
        max-width: 280px;
    }
    
    .impact-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
    }
    
    .demo-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    .problem-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
    }
    
    .stats-banner {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .hero-stats {
        gap: 2rem;
    }
}

/* ============================================
   DESKTOP BREAKPOINT (1024px+)
   ============================================ */

@media (min-width: 1024px) {
    /* Show desktop nav, hide hamburger */
    .hamburger {
        display: none;
    }
    
    .desktop-nav {
        display: block;
    }
    
    .desktop-nav ul {
        display: flex;
        gap: 2rem;
        list-style: none;
        align-items: center;
    }
    
    .desktop-nav a {
        color: var(--white);
        text-decoration: none;
        font-weight: 600;
        text-transform: uppercase;
        font-size: 0.8rem;
        letter-spacing: 0.5px;
        padding: 0.5rem 0;
        border-bottom: 2px solid transparent;
        transition: border-color 0.2s var(--ease-smooth);
    }
    
    .desktop-nav a:hover {
        border-bottom-color: var(--green);
    }
    
    /* Desktop layouts */
    .hero-container {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
        align-items: center;
    }
    
    .hero-content {
        max-width: 600px;
    }
    
    /* Show phone mockup on desktop */
    .phone-mockup {
        display: flex;
        justify-content: center;
        align-items: center;
    }
    
    .impact-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
    
    .footer-bottom {
        text-align: left;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .demo-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .problem-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .tech-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ============================================
   PRINT TEXTURE OVERLAY
   ============================================ */

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(0, 0, 0, 0.015) 2px,
            rgba(0, 0, 0, 0.015) 4px
        );
    pointer-events: none;
    z-index: 9999;
}

/* ============================================
   SAFE AREA (iOS Notch Support)
   ============================================ */

@supports (padding: max(0px)) {
    .header-content {
        padding-left: max(var(--container-padding), env(safe-area-inset-left));
        padding-right: max(var(--container-padding), env(safe-area-inset-right));
    }
    
    .mobile-menu {
        padding-right: max(0px, env(safe-area-inset-right));
    }
}