/* 
  ZINLO - Premium Agency CSS 
  Featuring: Liquid Glass UI, Smooth Animations, CSS Variables for Dark/Light Mode
*/

:root {
    /* Fonts */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Layout */
    --max-width: 1200px;
    --section-pad: 100px 5%;
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 8px;
    
    /* Transitions */
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-color: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

/* =========================================================================
   THEMES (DARK & LIGHT) 
   ========================================================================= */

/* Dark Theme (Default) */
[data-theme="dark"] {
    --bg-color: #050505;
    --bg-alt: #0a0a0a;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --glass-hover-bg: rgba(255, 255, 255, 0.08);
    
    /* Accents */
    --accent-1: #8b5cf6; /* Purple */
    --accent-2: #3b82f6; /* Blue */
    --gradient-primary: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    
    --input-bg: rgba(255, 255, 255, 0.05);
}

/* Light Theme */
[data-theme="light"] {
    --bg-color: #f8fafc;
    --bg-alt: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.05);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    --glass-hover-bg: rgba(255, 255, 255, 0.9);
    
    /* Accents */
    --accent-1: #6d28d9;
    --accent-2: #2563eb;
    --gradient-primary: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    
    --input-bg: rgba(0, 0, 0, 0.03);
}

/* =========================================================================
   RESETS & GLOBAL 
   ========================================================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: auto; /* Handled by Lenis */
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    width: 100vw;
    transition: var(--transition-color);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-smooth);
}

img {
    max-width: 100%;
    height: auto;
}

/* =========================================================================
   CUSTOM CURSOR & PARALLAX
   ========================================================================= */
@media (pointer: fine) {
    body, a, button, input, textarea, .tilt-card {
        cursor: none !important;
    }
}

.cursor-dot {
    position: fixed;
    top: 0;
    left: 0;
    width: 6px;
    height: 6px;
    background-color: var(--accent-1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.cursor-outline {
    position: fixed;
    top: 0;
    left: 0;
    width: 30px;
    height: 30px;
    border: 1.5px solid var(--accent-1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 9998;
    transition: width 0.2s ease, height 0.2s ease, background-color 0.2s ease;
}

.cursor-outline.hovering {
    width: 50px;
    height: 50px;
    background-color: rgba(139, 92, 246, 0.1);
    border-color: transparent;
}

/* Global Parallax Blobs */
.parallax-blob {
    position: absolute;
    width: 40vw;
    height: 40vw;
    max-width: 500px;
    max-height: 500px;
    border-radius: 50%;
    filter: blur(10vw);
    z-index: 0;
    opacity: 0.3;
    pointer-events: none;
}

.pb-1 {
    top: 20%;
    left: -10%;
    background: var(--accent-1);
}

.pb-2 {
    top: 60%;
    right: -10%;
    background: var(--accent-2);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

section {
    padding: var(--section-pad);
    position: relative;
    z-index: 1;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-header h2 {
    font-size: 3rem;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.grid {
    display: grid;
    gap: 2rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

/* =========================================================================
   GLASSMORPHISM UTILITIES
   ========================================================================= */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    transition: var(--transition-color);
}

.glass-card {
    position: relative;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    /* 3D highlights on the edges */
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    border-left: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: 
        var(--glass-shadow),
        inset 0 0 20px rgba(255, 255, 255, 0.05); /* Inner thickness */
    transition: var(--transition-smooth), transform 0.4s ease;
    height: 100%;
    overflow: hidden;
}

/* Liquid reflection swipe effect */
.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -150%;
    width: 60%;
    height: 100%;
    background: linear-gradient(to right, rgba(255,255,255,0) 0%, rgba(255,255,255,0.15) 50%, rgba(255,255,255,0) 100%);
    transform: skewX(-25deg);
    transition: left 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 0;
    pointer-events: none;
}

/* Keep card content above the glowing reflection */
.glass-card > * {
    position: relative;
    z-index: 1;
}

.glass-card:hover {
    background: var(--glass-hover-bg);
    border-color: var(--accent-1);
    box-shadow: 
        0 15px 40px rgba(139, 92, 246, 0.3),
        inset 0 0 30px rgba(255, 255, 255, 0.15);
}

.glass-card:hover::before {
    left: 200%;
}

/* =========================================================================
   BUTTONS
   ========================================================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
    font-family: var(--font-heading);
    gap: 0.5rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.5);
    color: #fff;
}

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

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

/* =========================================================================
   HEADER & NAV
   ========================================================================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 5%;
    border-top: none;
    border-left: none;
    border-right: none;
    border-radius: 0;
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    font-family: var(--font-heading);
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--accent-1);
}

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

.nav-links a:not(.nav-btn) {
    font-weight: 500;
    color: var(--text-secondary);
}

.nav-links a:not(.nav-btn):hover {
    color: var(--text-primary);
}

.nav-btn {
    padding: 0.6rem 1.5rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    font-weight: 500;
}

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

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.theme-toggle:hover {
    transform: rotate(15deg);
    color: var(--accent-1);
}

[data-theme="dark"] .dark-icon { display: none; }
[data-theme="dark"] .light-icon { display: block; }
[data-theme="light"] .light-icon { display: none; }
[data-theme="light"] .dark-icon { display: block; }

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

/* Abstract glowing blobs behind the hero */
.hero::before, .hero::after {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
    opacity: 0.5;
    transition: var(--transition-color);
}

[data-theme="dark"] .hero::before { background: rgba(139, 92, 246, 0.15); }
[data-theme="light"] .hero::before { background: rgba(139, 92, 246, 0.2); }
.hero::before {
    top: -5%;
    left: -10%;
}

[data-theme="dark"] .hero::after { background: rgba(59, 130, 246, 0.15); }
[data-theme="light"] .hero::after { background: rgba(59, 130, 246, 0.2); }
.hero::after {
    bottom: -5%;
    right: -10%;
}

.hero-container {
    max-width: var(--max-width);
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: clamp(3rem, 5vw, 5rem);
    letter-spacing: -1px;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-3d-wrapper {
    position: relative;
    width: 100%;
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.fallback-orb {
    position: absolute;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    filter: blur(60px);
    opacity: 0.5;
    animation: orbFloat 6s ease-in-out infinite;
}

@keyframes orbFloat {
    0% { transform: translate(0, 0) scale(1); opacity: 0.5; }
    33% { transform: translate(20px, -30px) scale(1.1); opacity: 0.7; }
    66% { transform: translate(-20px, 20px) scale(0.9); opacity: 0.6; }
    100% { transform: translate(0, 0) scale(1); opacity: 0.5; }
}

.hero-3d-container {
    position: relative;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: auto; /* Allow interactions with Spline */
}

spline-viewer {
    width: 100%;
    height: 100%;
}

/* Remove Spline logo if possible / style over it */
spline-viewer::part(logo) {
    display: none !important;
}

/* =========================================================================
   SERVICES SECTION
   ========================================================================= */
.services-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.card-icon {
    font-size: 2.5rem;
    color: var(--accent-1);
    margin-bottom: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.services .glass-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.services .glass-card p {
    color: var(--text-secondary);
}

/* =========================================================================
   WHY US SECTION
   ========================================================================= */
.why-us {
    background: var(--bg-alt);
    position: relative;
}

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

.feature {
    padding: 2rem;
    text-align: center;
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #fff;
    background: var(--gradient-primary);
    border-radius: 50%;
    box-shadow: 0 10px 20px rgba(139, 92, 246, 0.2);
}

.feature h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.feature p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* =========================================================================
   TESTIMONIALS SECTION
   ========================================================================= */
.testimonials-grid {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.review-stars {
    color: #ffd700;
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    display: flex;
    gap: 0.3rem;
}

.review-text {
    font-size: 1.1rem;
    font-style: italic;
    color: var(--text-primary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.client-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: auto;
    padding-top: 1.5rem;
    border-top: 1px solid var(--glass-border);
}

.client-avatar {
    font-size: 2.5rem;
    color: var(--text-secondary);
}

.client-details h4 {
    margin-bottom: 0.1rem;
    font-size: 1.1rem;
}

.client-details span {
    font-size: 0.85rem;
    color: var(--accent-1);
    font-weight: 500;
}

/* =========================================================================
   CONTACT SECTION
   ========================================================================= */
.contact-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    padding: 4rem;
}

.contact-info p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.contact-details p {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.contact-details i {
    color: var(--accent-1);
    font-size: 1.2rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input, 
.form-group textarea {
    padding: 1rem 1.2rem;
    background: var(--input-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition-smooth);
}

.form-group input:focus, 
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-1);
    background: transparent;
}

.submit-btn {
    width: 100%;
    margin-top: 1rem;
}

/* =========================================================================
   FOOTER
   ========================================================================= */
.footer {
    background: var(--bg-alt);
    padding: 4rem 5% 2rem;
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    max-width: 300px;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: var(--transition-smooth);
}

.social-links a:hover {
    background: var(--accent-1);
    color: #fff;
    border-color: var(--accent-1);
    transform: translateY(-3px);
}

.footer-links, .footer-contact {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-links h4, .footer-contact h4 {
    margin-bottom: 0.5rem;
}

.footer-links a, .footer-contact a {
    color: var(--text-secondary);
}

.footer-links a:hover, .footer-contact a:hover {
    color: var(--accent-1);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--glass-border);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* =========================================================================
   RESPONSIVE DESIGN
   ========================================================================= */
@media (max-width: 1024px) {
    :root {
        --section-pad: 80px 5%;
    }
    
    .hero h1 {
        font-size: clamp(2.5rem, 6vw, 4rem);
    }
    
    .section-header h2 {
        font-size: 2.5rem;
    }
    
    .hero-container {
        gap: 2rem;
    }
    
    .hero-3d-wrapper {
        height: 500px;
    }
}

@media (max-width: 968px) {
    .hero {
        padding-top: 130px;
        min-height: auto;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 1.5rem;
    }
    
    .hero-content {
        margin: 0 auto;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-3d-wrapper {
        position: relative;
        width: 100%;
        height: 60vw;
        min-height: 350px;
        max-height: 500px;
        margin-top: 1rem;
        overflow: hidden; /* prevents spline from bleeding out */
    }
    
    .fallback-orb {
        width: 60vw;
        height: 60vw;
        filter: blur(8vw);
    }
    
    .contact-container {
        grid-template-columns: 1fr;
        padding: 2.5rem;
        gap: 3rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    :root {
        --section-pad: 60px 20px;
    }

    /* Mobile Menu Overlay */
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: var(--bg-alt);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 3rem;
        transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        z-index: 999;
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-links a {
        font-size: 1.5rem;
    }
    
    .mobile-menu-btn {
        display: block;
        position: relative;
        z-index: 1000;
        font-size: 1.8rem;
    }
    
    /* Ensure theme toggle remains visible on mobile in header */
    .theme-toggle {
        display: block;
        position: absolute;
        right: 70px;
        z-index: 1000;
    }

    .section-header h2 {
        font-size: 2.2rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand p {
        margin: 0 auto 1.5rem;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .glass-card {
        padding: 1.8rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
    }
    
    .hero-3d-wrapper {
        min-height: 300px;
    }
    
    .services-grid, .why-grid, .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-container {
        padding: 1.5rem;
    }
}