/* ============================================
   GPTPets Styles
   ============================================ */

/* ============================================
   Reset & Base Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-dark: #1a1a2e;
    --bg-darker: #0f0f1e;
    --text-white: #ffffff;
    --pink-light: #ff69b4;
    --pink-dark: #ff1493;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);

    /* Responsive spacing */
    --spacing-xs: clamp(0.25rem, 1vw, 0.5rem);
    --spacing-sm: clamp(0.5rem, 2vw, 1rem);
    --spacing-md: clamp(1rem, 3vw, 1.5rem);
    --spacing-lg: clamp(1.5rem, 4vw, 2rem);
    --spacing-xl: clamp(2rem, 5vw, 3rem);

    /* Safe area insets for notched devices */
    --safe-area-top: env(safe-area-inset-top, 0px);
    --safe-area-right: env(safe-area-inset-right, 0px);
    --safe-area-bottom: env(safe-area-inset-bottom, 0px);
    --safe-area-left: env(safe-area-inset-left, 0px);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    background: var(--bg-dark);
    color: var(--text-white);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
    min-height: 100dvh; /* Dynamic viewport height for mobile */
}

/* ============================================
   Background & Canvas
   ============================================ */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('ohsoshy-xK7Fd4YaX5Y-unsplash.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    z-index: -2;
}

#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    /* GPU acceleration */
    will-change: transform;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
    /* Improve rendering */
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

/* ============================================
   Pattern Selector
   ============================================ */
.pattern-selector {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.pattern-btn {
    width: 40px;
    height: 40px;
    min-width: 40px;
    min-height: 40px;
    border-radius: 10px;
    border: 2px solid transparent;
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    background-origin: border-box;
    background-clip: padding-box;
    background-color: #0f0f1e;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    padding: 0;
    outline: none;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.pattern-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(26, 26, 46, 0.3);
    transition: opacity 0.3s ease;
}

.pattern-btn:hover::before {
    opacity: 0;
}

.pattern-btn.active {
    border-color: #a26dfc;
}

.pattern-btn.active::before {
    opacity: 0;
}

/* ============================================
   Utility Classes
   ============================================ */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    padding: max(20px, var(--safe-area-top))
             max(20px, var(--safe-area-right))
             max(20px, var(--safe-area-bottom))
             max(20px, var(--safe-area-left));
    overflow: hidden;
}

.hero-content {
    max-width: 1100px;
    width: 100%;
    max-height: 95vh;
    max-height: 95dvh;
    animation: fadeInUp 1s ease;
    padding: 1.5rem 2rem;
    border-radius: clamp(20px, 3vw, 30px);
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px) saturate(120%) brightness(1.15);
    -webkit-backdrop-filter: blur(10px) saturate(120%) brightness(1.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2), inset 1px 1px 1px rgba(255, 255, 255, 0.4);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

/* Logo */
.logo-image {
    max-width: min(350px, 70vw);
    width: 100%;
    height: auto;
    margin: 0 auto 0.5rem auto;
    display: block;
}

/* ============================================
   Typography
   ============================================ */
.hero h1 {
    font-size: clamp(1.5rem, 4vw, 2.2rem);
    margin-bottom: 1rem;
    line-height: 1.2;
    font-weight: 700;
}

.hero p {
    font-size: clamp(0.9rem, 1.8vw, 1rem);
    margin-bottom: 0.75rem;
    color: rgb(255, 187, 151);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
}

/* ============================================
   Demo GIF
   ============================================ */
.demo-gif-container {
    width: 100%;
    max-width: 100%;
    margin: 0.75rem auto;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 1;
}

.demo-gif {
    max-width: 100%;
    max-height: 35vh;
    width: auto;
    height: auto;
    display: block;
    border-radius: 12px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    object-fit: contain;
}

/* ============================================
   YouTube Link
   ============================================ */
.youtube-link {
    display: inline;
    margin-bottom: 0.75rem;
    font-size: clamp(0.75rem, 1.5vw, 0.85rem);
    font-weight: 400;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: underline;
    transition: all 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

.youtube-link:hover {
    color: rgba(255, 255, 255, 1);
    text-decoration: underline;
}

/* ============================================
   CTA Button
   ============================================ */
.cta-button {
    display: inline-block;
    padding: 10px 24px;
    font-size: 0.9rem;
    font-weight: 500;
    background: rgba(95, 60, 11, 0.5);
    backdrop-filter: blur(10px) saturate(120%) brightness(1.2);
    -webkit-backdrop-filter: blur(10px) saturate(120%) brightness(1.2);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all 0.2s ease;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    white-space: nowrap;
    margin-top: 20px;
}

.cta-button:active {
    transform: scale(0.98);
}

/* ============================================
   Platform Support
   ============================================ */
.platform-support {
    font-size: clamp(0.75rem, 1.5vw, 0.85rem);
    color: rgba(255, 255, 255, 0.4);
    margin-top: 0.5rem;
    margin-bottom: 0;
    font-weight: 300;
}

/* ============================================
   Footer Content (Inside Glass Panel)
   ============================================ */
.footer-content {
    text-align: center;
    padding-top: 0.75rem;
    margin-top: auto;
    width: 100%;
    display: block;
}

.footer-content p {
    color: rgba(255, 255, 255, 0.7);
    font-size: clamp(0.8rem, 1.5vw, 0.9rem);
    margin: 0;
    text-align: center;
}

.footer-content a {
    color:#a26dfc;
    text-decoration: none;
    transition: color 0.3s ease;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    display: inline-block;
    -webkit-tap-highlight-color: transparent;
}

.footer-content a:hover {
    color: var(--pink-dark);
}

/* ============================================
   Scroll Reveal
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.6s ease;
}

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

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ============================================
   Responsive Design
   ============================================ */

/* Large Desktops - 1440px and up */
@media (min-width: 1440px) {
    .hero-content {
        max-width: 1200px;
    }

    .demo-gif {
        max-width: 900px;
    }
}

/* Tablets and Small Laptops - 1024px and below */
@media (max-width: 1024px) {
    .hero-content {
        max-width: 95%;
        padding: 1.5rem 2rem;
    }

    .logo-image {
        max-width: 320px;
    }

    .demo-gif {
        max-height: 30vh;
    }
}

/* Tablets Portrait - 768px and below */
@media (max-width: 768px) {
    .pattern-selector {
        gap: 8px;
        margin-bottom: 0.5rem;
    }

    .pattern-btn {
        width: 35px;
        height: 35px;
        min-width: 35px;
        min-height: 35px;
    }

    .hero {
        padding: 15px;
    }

    .hero-content {
        padding: 1.25rem 1.5rem;
        border-radius: 20px;
        max-width: 100%;
        max-height: 96vh;
        max-height: 96dvh;
    }

    .logo-image {
        max-width: 260px;
        margin: 0 auto 0.4rem auto;
    }

    .demo-gif {
        max-height: 28vh;
        border-radius: 10px;
    }

    .demo-gif-container {
        margin: 0.5rem auto;
    }

    .cta-button {
        padding: 9px 18px;
        font-size: 0.9rem;
    }

    .footer-content {
        padding-top: 0.5rem;
    }
}

/* Large Phones - 640px and below */
@media (max-width: 640px) {
    .hero {
        padding: 12px;
    }

    .hero-content {
        padding: 1rem 1.25rem;
    }

    .logo-image {
        max-width: 220px;
        margin: 0 auto 0.3rem auto;
    }

    .demo-gif {
        max-height: 25vh;
        border-radius: 8px;
    }

    .demo-gif-container {
        margin: 0.4rem auto;
    }

    .cta-button {
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    .footer-content {
        padding-top: 0.4rem;
    }
}

/* Small Phones - 480px and below */
@media (max-width: 480px) {
    .pattern-selector {
        gap: 6px;
        margin-bottom: 0.4rem;
    }

    .pattern-btn {
        width: 30px;
        height: 30px;
        min-width: 30px;
        min-height: 30px;
        border-radius: 8px;
    }

    .hero {
        padding: 10px;
    }

    .hero-content {
        padding: 1rem 1rem;
        border-radius: 16px;
        max-height: 97vh;
        max-height: 97dvh;
    }

    .logo-image {
        max-width: 180px;
        margin: 0 auto 0.25rem auto;
    }

    .demo-gif {
        max-height: 22vh;
        border-radius: 8px;
        border-width: 1.5px;
    }

    .demo-gif-container {
        margin: 0.3rem auto;
    }

    .youtube-link {
        margin-bottom: 0.5rem;
    }

    .cta-button {
        padding: 8px 14px;
        font-size: 0.8rem;
    }

    .footer-content {
        padding-top: 0.4rem;
    }
}

/* Extra Small Phones - 360px and below */
@media (max-width: 360px) {
    .pattern-selector {
        gap: 5px;
        margin-bottom: 0.3rem;
    }

    .pattern-btn {
        width: 26px;
        height: 26px;
        min-width: 26px;
        min-height: 26px;
        border-radius: 6px;
    }

    .hero {
        padding: 8px;
    }

    .hero-content {
        padding: 0.85rem 0.75rem;
        border-radius: 14px;
    }

    .logo-image {
        max-width: 160px;
        margin: 0 auto 0.2rem auto;
    }

    .demo-gif {
        max-height: 20vh;
    }

    .demo-gif-container {
        margin: 0.25rem auto;
    }

    .youtube-link {
        margin-bottom: 0.4rem;
    }

    .cta-button {
        padding: 7px 12px;
        font-size: 0.75rem;
    }

    .footer-content {
        padding-top: 0.3rem;
    }
}

/* Landscape Orientation - Mobile Devices */
@media (max-height: 600px) and (orientation: landscape) {
    .hero {
        padding: 10px;
    }

    .hero-content {
        padding: 0.75rem 1.5rem;
        max-height: 98vh;
        max-height: 98dvh;
    }

    .pattern-selector {
        margin-bottom: 0.3rem;
        gap: 8px;
    }

    .pattern-btn {
        width: 32px;
        height: 32px;
        min-width: 32px;
        min-height: 32px;
    }

    .logo-image {
        max-width: 180px;
        margin: 0 auto 0.2rem auto;
    }

    .demo-gif {
        max-height: 35vh;
        max-width: 50%;
        border-radius: 8px;
    }

    .demo-gif-container {
        margin: 0.25rem auto;
    }

    .youtube-link {
        margin-bottom: 0.4rem;
    }

    .cta-button {
        padding: 8px 14px;
        font-size: 0.8rem;
    }

    .footer-content {
        padding-top: 0.3rem;
    }
}

/* Hover Support - Desktop Only */
@media (hover: hover) and (pointer: fine) {
    .pattern-btn:hover {
        transform: translateY(-3px);
        box-shadow: 0 8px 20px rgba(255, 105, 180, 0.3);
    }

    .cta-button:hover {
        transform: translateY(-2px);
        background: rgba(255, 255, 255, 0.15);
        border-color: rgba(255, 255, 255, 0.4);
        box-shadow: 0 6px 20px rgba(255, 105, 180, 0.4), inset 1px 1px 2px rgba(255, 255, 255, 0.5);
    }

    .youtube-link:hover {
        color: rgba(255, 255, 255, 1);
    }

    .footer-content a:hover {
        background: rgba(255, 105, 180, 0.1);
    }
}

/* Remove hover effects on touch devices */
@media (hover: none) and (pointer: coarse) {
    .pattern-btn:hover {
        transform: none;
        box-shadow: none;
    }

    .pattern-btn:active {
        transform: scale(0.95);
        box-shadow: 0 5px 15px rgba(255, 105, 180, 0.4);
    }

    .cta-button:hover {
        transform: none;
        background: rgba(255, 255, 255, 0.1);
        box-shadow: 0 4px 15px rgba(255, 105, 180, 0.3), inset 1px 1px 1px rgba(255, 255, 255, 0.4);
    }

    .youtube-link:hover {
        color: rgba(255, 255, 255, 1);
    }

    .youtube-link:active {
        color: var(--pink-light);
    }

    .footer-content a:hover {
        background: none;
    }

    .footer-content a:active {
        background: rgba(255, 105, 180, 0.15);
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .demo-gif,
    .logo-image {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Print Styles */
@media print {
    * {
        background: white !important;
        color: black !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }

    #particle-canvas,
    .pattern-selector {
        display: none !important;
    }

    .hero {
        padding: 20px !important;
    }

    .hero-content {
        border: 2px solid #000 !important;
        padding: 20px !important;
        page-break-inside: avoid;
    }

    .demo-gif {
        max-width: 100% !important;
        page-break-inside: avoid;
    }

    a[href]:after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
    }

    a[href^="#"]:after {
        content: "";
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .hero-content {
        animation: none;
    }
}

/* Dark Mode Support (if user has light mode preference) */
@media (prefers-color-scheme: light) {
    :root {
        /* Keep dark theme but slightly adjust for readability */
        --bg-dark: #1a1a2e;
        --text-white: #ffffff;
    }
}