/* 
  TapDine Minimalist CSS 
  Strict Black & White Theme 
*/

:root {
    --bg-color: #000000;
    --text-color: #ffffff;
    --text-muted: #a1a1aa;
    --accent-color: #ffffff;
    --accent-hover: #e4e4e7;
    --border-color: #27272a;
    --card-bg: #111111;
    --nav-bg: rgba(0, 0, 0, 0.8);
    --brand-accent: #f97316;
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-sans);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

body {
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(3rem, 8vw, 5rem);
    margin-bottom: 1rem;
}

h2 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

p {
    color: var(--text-muted);
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
}

.highlight {
    color: var(--text-color);
    /* Subtle underline or style could go here if needed */
}

.icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
}

.icon svg {
  color: var(--text-color);
  transition: color var(--transition-fast), transform var(--transition-fast);
}

/* Icon hover effect */
.card:hover .icon svg {
  color: var(--brand-accent);
  transform: scale(1.1);
}

/* Layout */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 8rem 0;
}

.section-dark {
    background-color: #050505;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 9999px; /* Pill shape */
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
}

.btn-sm {
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
}

.btn-primary {
    background-color: var(--accent-color);
    color: var(--bg-color);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: var(--card-bg);
    border-color: var(--text-muted);
}

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

.btn-outline:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: var(--nav-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--text-color);
    text-decoration: none;
    letter-spacing: -0.05em;
}

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

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

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

/* Hero Section */
.hero {
    padding-top: 120px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 50vh;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, rgba(0,0,0,0) 70%);
    pointer-events: none;
}

.hero-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 4rem;
}

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

.hero-content .subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    margin-bottom: 2.5rem;
}

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

.hero-image-wrapper {
    width: 100%;
    max-width: 900px;
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    background: var(--card-bg);
    aspect-ratio: 16/9;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.placeholder-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    background: linear-gradient(135deg, #111, #050505);
}

/* Grid Layouts */
.grid {
    display: grid;
    gap: 2rem;
}

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

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.card:hover {
    transform: translateY(-5px);
    border-color: #333;
}

.card .icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

/* Split Layout */
.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.align-center {
    align-items: center;
}

.align-start {
    align-items: flex-start;
}

.image-box {
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    aspect-ratio: 4/3;
    background: var(--card-bg);
}

.image-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Benefits Section */
.benefits-grid {
    grid-template-columns: 1fr 1fr;
}

.benefit-column {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 3rem;
}

.benefit-column h3 {
    margin-bottom: 2rem;
    font-size: 1.75rem;
}

.benefit-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.benefit-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    font-size: 1.125rem;
    color: var(--text-muted);
}

.benefit-list svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: var(--text-color);
}

/* How It Works Steps */
.steps-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    position: relative;
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
    position: relative;
    z-index: 2;
}

.steps-container::after {
    content: '';
    position: absolute;
    top: 32px;
    left: 10%;
    right: 10%;
    height: 1px;
    background-color: var(--border-color);
    z-index: 1;
}

@media (max-width: 768px) {
    .steps-container {
        grid-template-columns: 1fr;
    }
    .steps-container::after {
        display: none;
    }
}

/* CTA Banner */
.cta-banner {
    padding: 6rem 0;
    background: linear-gradient(180deg, var(--bg-color) 0%, var(--card-bg) 100%);
    text-align: center;
    border-top: 1px solid var(--border-color);
}

/* Form Styles */
.contact-form {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 3rem;
}

/* new changes for the text area field */
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    font-family: var(--font-sans);
    font-size: 1rem;
    min-height: 100px;
    resize: vertical; /* keeps UX flexible but controlled */
    transition: border-color var(--transition-fast);
}

.form-group textarea:focus {
    outline: none;
    border-color: var(--text-muted);
}

.form-group textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
}

.form-group input {
    width: 100%;
    padding: 1rem;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--text-muted);
}

.form-success-msg {
    margin-top: 1rem;
    padding: 1rem;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    text-align: center;
    color: #4ade80; /* Subtle green for success */
    font-weight: 500;
}

/* WhatsApp Button */
.whatsapp-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: #25D366; /* WhatsApp brand color */
    color: #fff;
    font-weight: 600;
    border-radius: 9999px;
    text-decoration: none;
    transition: transform var(--transition-fast);
}

.whatsapp-btn:hover {
    transform: translateY(-2px);
}

.whatsapp-btn svg {
    width: 20px;
    height: 20px;
}

.mt-4 { margin-top: 2rem; }

/* Footer */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 4rem 0 2rem;
    background-color: var(--bg-color);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand {
    max-width: 300px;
}

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

.footer-links {
    display: flex;
    gap: 4rem;
}

.link-group h4 {
    color: var(--text-color);
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.link-group a {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.link-group a:hover {
    color: var(--brand-accent);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    text-align: center;
    font-size: 0.875rem;
}

/* Circular Diagram */
.split-diagram {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 400px;
}

.circular-diagram {
    position: relative;
    width: 320px;
    height: 320px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.center-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    z-index: 10;
}

.center-logo img {
    width: 48px;
    height: auto;
}

.orbit-circle {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 1px dashed var(--border-color);
    border-radius: 50%;
    opacity: 0.5;
    animation: rotate 60s linear infinite;
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.node {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    text-align: center;
    width: 100px;
    transform: translate(-50%, -50%);
}

.node span {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--text-color);
}

.icon-circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    box-shadow: 0 4px 12px rgba(0,0,0,0.5);
    z-index: 5;
    transition: transform var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.icon-circle:hover {
    transform: scale(1.1);
    border-color: #f97316;
    color: #f97316;
}

.icon-circle svg {
    width: 24px;
    height: 24px;
}

/* Positioning the nodes */
.node.top { top: 0; left: 50%; }
.node.right { top: 50%; left: 100%; }
.node.bottom { top: 100%; left: 50%; }
.node.left { top: 50%; left: 0; }

/* Why TapDine List */
.why-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.why-list li {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-color);
}

.icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: rgba(249, 115, 22, 0.1);
    color: #f97316;
    flex-shrink: 0;
}

.icon-wrapper svg {
    width: 24px;
    height: 24px;
}

.stats-grid {
    grid-template-columns: repeat(4, 1fr);
}

/* Animations */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

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

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* Media Queries */
@media (max-width: 992px) {
    .split-layout, .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-container {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none; /* simple hidden nav on mobile for this iteration */
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .section {
        padding: 5rem 0;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .circular-diagram {
        transform: scale(0.8);
    }
}