/* PHYT Website - Shared Styles */

/* ============================================
   RESET & BASE
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent; /* Remove tap highlight on mobile */
}

/* Fix for mobile scrolling */
main {
    -webkit-overflow-scrolling: touch;
    overflow-x: hidden;
}

:root {
    --phyt-black: #000000;
    --phyt-white: #FFFFFF;
    --phyt-gray-100: #F5F5F5;
    --phyt-gray-200: #E5E5E5;
    --phyt-gray-300: #D4D4D4;
    --phyt-gray-400: #BFBFBF;
    --phyt-gray-500: #999999;
    --phyt-gray-600: #737373;
    --phyt-gray-700: #4D4D4D;
    --phyt-gray-800: #2E2E2E;
    --phyt-gray-900: #1A1A1A;
    
    --spacing-xs: 3.4px;
    --spacing-s: 6.8px;
    --spacing-m: 13.6px;
    --spacing-l: 20.4px;
    --spacing-xl: 27.2px;
    --spacing-2xl: 40.8px;
    --spacing-3xl: 54.4px;
    
    --radius-sm: 6.8px;
    --radius-md: 10.2px;
    --radius-lg: 13.6px;
    
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    --scale-factor: 0.85;
}

html {
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    height: 100%;
    overflow-x: hidden;
    font-size: 85%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--phyt-black);
    background-color: var(--phyt-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-base), color var(--transition-base);
    height: 100%;
    overflow-x: hidden;
    position: relative;
    touch-action: pan-y;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
    body {
        background-color: var(--phyt-black);
        color: var(--phyt-white);
    }
}

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

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

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.7);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    transition: all var(--transition-base);
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    will-change: transform, background-color, box-shadow;
}

/* Hide any lifting guy image in header only */
.header img[src*="lifting"],
.header img[src*="blacklogolifting"] {
    display: none !important;
}

/* Global rule to hide lifting guy image - but allow app-icon-on-screen, hero-app-icon, and app-icon-standalone */
img[src*="blacklogolifting"]:not(.app-icon-on-screen):not(.hero-app-icon):not(.app-icon-standalone) {
    display: none !important;
}

@media (prefers-color-scheme: dark) {
    .header {
        background-color: rgba(0, 0, 0, 0.7);
        border-bottom-color: rgba(255, 255, 255, 0.1);
    }
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.85);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border-bottom-color: rgba(0, 0, 0, 0.08);
}

@media (prefers-color-scheme: dark) {
    .header.scrolled {
        background-color: rgba(0, 0, 0, 0.85);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        border-bottom-color: rgba(255, 255, 255, 0.15);
    }
}

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

.logo {
    font-size: 24px;
    font-weight: 900;
    letter-spacing: 1.5px;
    text-decoration: none;
    color: var(--phyt-black);
    transition: all var(--transition-base);
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Rounded', 'Helvetica Neue', Arial, sans-serif;
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.logo img,
.logo .header-logo-img {
    height: 50px;
    width: auto;
    display: block;
    transition: transform var(--transition-base);
    object-fit: contain;
    opacity: 1 !important;
}

@media (prefers-color-scheme: dark) {
    .logo img,
    .logo .header-logo-img {
        filter: invert(1);
    }
}

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

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

.nav {
    display: flex;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-link {
    color: var(--phyt-gray-700);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    padding: var(--spacing-s) var(--spacing-m);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.05), rgba(0, 0, 0, 0.02));
    opacity: 0;
    transition: opacity var(--transition-fast);
    border-radius: var(--radius-md);
}

@media (prefers-color-scheme: dark) {
    .nav-link::before {
        background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    }
}

@media (prefers-color-scheme: dark) {
    .nav-link {
        color: var(--phyt-gray-300);
    }
}

.nav-link:hover {
    color: var(--phyt-black);
    transform: translateY(-1px);
}

.nav-link:hover::before {
    opacity: 1;
}

@media (prefers-color-scheme: dark) {
    .nav-link:hover {
        color: var(--phyt-white);
    }
}

.nav-link.active {
    color: var(--phyt-black);
    font-weight: 600;
}

@media (prefers-color-scheme: dark) {
    .nav-link.active {
        color: var(--phyt-white);
    }
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--phyt-black), transparent);
    border-radius: 1px;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        width: 0;
        opacity: 0;
    }
    to {
        width: 60%;
        opacity: 1;
    }
}

@media (prefers-color-scheme: dark) {
    .nav-link.active::after {
        background: linear-gradient(90deg, transparent, var(--phyt-white), transparent);
    }
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-s);
    color: var(--phyt-black);
}

@media (prefers-color-scheme: dark) {
    .mobile-menu-toggle {
        color: var(--phyt-white);
    }
}

/* Navbar CTA Button */
.nav-cta {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-s) var(--spacing-l);
    background-color: var(--phyt-black);
    color: var(--phyt-white);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 14px;
    transition: all var(--transition-base);
    border: 2px solid var(--phyt-black);
    position: relative;
    overflow: hidden;
}

.nav-cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.nav-cta:hover::before {
    width: 300px;
    height: 300px;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

@media (prefers-color-scheme: dark) {
    .nav-cta {
        background-color: var(--phyt-white);
        color: var(--phyt-black);
        border-color: var(--phyt-white);
    }
    
    .nav-cta::before {
        background: rgba(0, 0, 0, 0.1);
    }
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 1002;
        transition: all var(--transition-base);
        position: relative;
        width: 44px;
        height: 44px;
        padding: 0;
    }
    
    .mobile-menu-toggle svg {
        transition: transform 0.3s ease;
    }
    
    .mobile-menu-toggle.active svg {
        transform: rotate(90deg);
    }
    
    .nav {
        position: fixed;
        top: 0;
        right: 0;
        width: 85%;
        max-width: 400px;
        height: 100vh;
        height: 100dvh; /* Dynamic viewport height for mobile */
        background-color: var(--phyt-white);
        backdrop-filter: blur(20px) saturate(180%);
        -webkit-backdrop-filter: blur(20px) saturate(180%);
        flex-direction: column;
        padding: 0;
        transform: translateX(100%);
        opacity: 0;
        pointer-events: none;
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
        -webkit-overflow-scrolling: touch;
        overflow-y: auto;
        overflow-x: hidden;
        z-index: 1001;
        will-change: transform, opacity;
        display: flex;
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
    }
    
    @media (prefers-color-scheme: dark) {
        .nav {
            background-color: var(--phyt-black);
            box-shadow: -4px 0 20px rgba(0, 0, 0, 0.5);
        }
    }
    
    .nav.open {
        transform: translateX(0) !important;
        opacity: 1 !important;
        pointer-events: all !important;
    }
    
    /* Mobile menu header */
    .nav::before {
        content: '';
        display: block;
        padding: 20px var(--spacing-l);
        border-bottom: 1px solid var(--phyt-gray-200);
        min-height: 70px;
    }
    
    @media (prefers-color-scheme: dark) {
        .nav::before {
            border-bottom-color: var(--phyt-gray-800);
        }
    }
    
    .nav-link {
        width: 100%;
        text-align: left;
        padding: 18px var(--spacing-l);
        font-size: 17px;
        font-weight: 500;
        border-radius: 0;
        transition: all var(--transition-fast);
        display: flex;
        align-items: center;
        min-height: 56px;
        border-bottom: 1px solid var(--phyt-gray-100);
        color: var(--phyt-black);
        text-decoration: none;
    }
    
    @media (prefers-color-scheme: dark) {
        .nav-link {
            border-bottom-color: var(--phyt-gray-800);
            color: var(--phyt-white);
        }
    }
    
    .nav-link:active,
    .nav-link:hover {
        background-color: var(--phyt-gray-100);
        transform: none;
    }
    
    @media (prefers-color-scheme: dark) {
        .nav-link:active,
        .nav-link:hover {
            background-color: var(--phyt-gray-800);
        }
    }
    
    .nav-link.active {
        background-color: var(--phyt-gray-100);
        font-weight: 600;
        border-left: 3px solid var(--phyt-black);
    }
    
    @media (prefers-color-scheme: dark) {
        .nav-link.active {
            background-color: var(--phyt-gray-800);
            border-left-color: var(--phyt-white);
        }
    }
    
    .nav-link.active::after {
        display: none;
    }
    
    .nav-cta {
        width: calc(100% - 48px);
        margin: var(--spacing-xl) var(--spacing-l);
        padding: 16px var(--spacing-xl);
        font-size: 17px;
        font-weight: 600;
        min-height: 56px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: var(--radius-md);
    }
}

/* Mobile menu backdrop */
.mobile-menu-backdrop {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.mobile-menu-backdrop.active {
    display: block;
    opacity: 1;
    pointer-events: all;
}

@media (max-width: 768px) {
    .mobile-menu-backdrop.active {
        display: block;
        pointer-events: all;
    }
}

/* ============================================
   CONTAINER & LAYOUT
   ============================================ */
.container {
    max-width: 680px;
    margin: 0 auto;
    padding: var(--spacing-3xl) var(--spacing-l);
}

.container-wide {
    max-width: 1020px;
    margin: 0 auto;
    padding: var(--spacing-3xl) var(--spacing-l);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1 {
    font-size: 3.5em;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--spacing-l);
    letter-spacing: -0.02em;
    color: var(--phyt-black);
}

@media (prefers-color-scheme: dark) {
    h1 {
        color: var(--phyt-white);
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5em;
    }
}

h2 {
    font-size: 2em;
    font-weight: 700;
    line-height: 1.2;
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-l);
    color: var(--phyt-black);
}

@media (prefers-color-scheme: dark) {
    h2 {
        color: var(--phyt-white);
    }
}

@media (max-width: 768px) {
    h2 {
        font-size: 1.75em;
    }
}

h3 {
    font-size: 1.5em;
    font-weight: 600;
    line-height: 1.3;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-m);
    color: var(--phyt-black);
}

@media (prefers-color-scheme: dark) {
    h3 {
        color: var(--phyt-white);
    }
}

p {
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: var(--spacing-m);
    color: var(--phyt-gray-700);
}

@media (prefers-color-scheme: dark) {
    p {
        color: var(--phyt-gray-300);
    }
}

.date {
    color: var(--phyt-gray-500);
    font-size: 14px;
    margin-bottom: var(--spacing-2xl);
}

@media (prefers-color-scheme: dark) {
    .date {
        color: var(--phyt-gray-500);
    }
}

/* Lists in sections */
.section ul,
.section ol {
    margin-left: 20px;
    margin-top: 12px;
    margin-bottom: 12px;
    line-height: 1.8;
    padding-left: 20px;
}

.section ul li,
.section ol li {
    margin-bottom: 8px;
    color: var(--phyt-gray-700);
}

@media (prefers-color-scheme: dark) {
    .section ul li,
    .section ol li {
        color: var(--phyt-gray-300);
    }
}

.section h3 {
    font-size: 1.2em;
    font-weight: 600;
    margin-top: 24px;
    margin-bottom: 12px;
    color: var(--phyt-black);
}

@media (prefers-color-scheme: dark) {
    .section h3 {
        color: var(--phyt-white);
    }
}

/* ============================================
   CARDS & SECTIONS
   ============================================ */
.section {
    background-color: var(--phyt-gray-100);
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-l);
    transition: all var(--transition-base);
    opacity: 0;
    animation: fadeInUp 0.6s ease-out forwards;
}

@media (prefers-color-scheme: dark) {
    .section {
        background-color: rgba(255, 255, 255, 0.05);
    }
}

.section:nth-child(1) { animation-delay: 0.1s; }
.section:nth-child(2) { animation-delay: 0.2s; }
.section:nth-child(3) { animation-delay: 0.3s; }
.section:nth-child(4) { animation-delay: 0.4s; }
.section:nth-child(5) { animation-delay: 0.5s; }
.section:nth-child(6) { animation-delay: 0.6s; }

.section:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

@media (prefers-color-scheme: dark) {
    .section:hover {
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    }
}

.section-icon {
    width: 32px;
    height: 32px;
    margin-bottom: var(--spacing-m);
    opacity: 0.8;
}

.section h2 {
    margin-top: 0;
    margin-bottom: var(--spacing-m);
}

.section p {
    margin-bottom: var(--spacing-m);
}

.section p:last-child {
    margin-bottom: 0;
}

/* ============================================
   BUTTONS & LINKS
   ============================================ */
.btn {
    display: inline-block;
    padding: var(--spacing-m) var(--spacing-xl);
    background-color: var(--phyt-black);
    color: var(--phyt-white);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 16px;
    transition: all var(--transition-base);
    border: 2px solid var(--phyt-black);
    cursor: pointer;
}

@media (prefers-color-scheme: dark) {
    .btn {
        background-color: var(--phyt-white);
        color: var(--phyt-black);
        border-color: var(--phyt-white);
    }
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    background-color: transparent;
    color: var(--phyt-black);
    border-color: var(--phyt-black);
}

@media (prefers-color-scheme: dark) {
    .btn-secondary {
        color: var(--phyt-white);
        border-color: var(--phyt-white);
    }
}

a {
    color: var(--phyt-black);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: all var(--transition-fast);
}

@media (prefers-color-scheme: dark) {
    a {
        color: var(--phyt-white);
    }
}

a:hover {
    opacity: 0.7;
    text-decoration-thickness: 2px;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-l);
    animation: fadeIn 0.8s ease-out;
}

.hero-logo {
    font-size: 5em;
    font-weight: 900;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-l);
    background: linear-gradient(135deg, var(--phyt-black) 0%, var(--phyt-gray-600) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Rounded', 'Helvetica Neue', Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
    .hero-logo {
        background: linear-gradient(135deg, var(--phyt-white) 0%, var(--phyt-gray-300) 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
}

@media (max-width: 768px) {
    .hero-logo {
        font-size: 3.5em;
    }
}

.hero-subtitle {
    font-size: 1.25em;
    color: var(--phyt-gray-600);
    margin-bottom: var(--spacing-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

@media (prefers-color-scheme: dark) {
    .hero-subtitle {
        color: var(--phyt-gray-400);
    }
}

.hero-links {
    display: flex;
    gap: var(--spacing-m);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-2xl);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    margin-top: var(--spacing-3xl);
    padding: var(--spacing-2xl) var(--spacing-l);
    border-top: 1px solid var(--phyt-gray-200);
    text-align: center;
}

@media (prefers-color-scheme: dark) {
    .footer {
        border-top-color: var(--phyt-gray-800);
    }
}

.footer-links {
    display: flex;
    gap: var(--spacing-l);
    justify-content: center;
    margin-bottom: var(--spacing-l);
    flex-wrap: wrap;
}

.footer-link {
    color: var(--phyt-gray-600);
    text-decoration: none;
    font-size: 14px;
    transition: all var(--transition-fast);
}

@media (prefers-color-scheme: dark) {
    .footer-link {
        color: var(--phyt-gray-400);
    }
}

.footer-link:hover {
    color: var(--phyt-black);
    text-decoration: underline;
}

@media (prefers-color-scheme: dark) {
    .footer-link:hover {
        color: var(--phyt-white);
    }
}

.footer-text {
    color: var(--phyt-gray-500);
    font-size: 14px;
    margin-top: var(--spacing-m);
}

/* ============================================
   SUPPORT PAGE SPECIFIC
   ============================================ */
.support-hero {
    text-align: center;
    padding: var(--spacing-2xl) 0;
    margin-bottom: var(--spacing-3xl);
}

.support-icon {
    font-size: 4em;
    margin-bottom: var(--spacing-l);
    opacity: 0.9;
}

.email-box {
    background-color: var(--phyt-gray-100);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    margin: var(--spacing-2xl) 0;
    text-align: center;
    transition: all var(--transition-base);
}

@media (prefers-color-scheme: dark) {
    .email-box {
        background-color: rgba(255, 255, 255, 0.05);
    }
}

.email-box:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

@media (prefers-color-scheme: dark) {
    .email-box:hover {
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    }
}

.email-link {
    font-size: 1.5em;
    font-weight: 600;
    color: var(--phyt-black);
    text-decoration: none;
    display: inline-block;
    margin-top: var(--spacing-m);
}

@media (prefers-color-scheme: dark) {
    .email-link {
        color: var(--phyt-white);
    }
}

.email-link:hover {
    opacity: 0.8;
    text-decoration: underline;
}

/* ============================================
   UTILITIES
   ============================================ */
.text-center {
    text-align: center;
}

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* Intersection Observer for scroll animations */
.fade-in-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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