/* ==========================================================================
   DOGSTUDIO CLONE - DESIGN SYSTEM & STYLES
   ========================================================================== */

/* Design Tokens & Custom Properties */
:root {
    --bg-color: #070610;
    --text-color: #ffffff;
    --text-muted: rgba(255, 255, 255, 0.6);
    --primary-color: #ff3366; /* Neon pink */
    --secondary-color: #00f3ff; /* Neon cyan */
    --accent-color: #7000ff; /* Electric violet */
    
    --font-heading: 'Syne', sans-serif;
    --font-body: 'Outfit', sans-serif;
    
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.07);
    --glass-bg-hover: rgba(255, 255, 255, 0.08);
    
    --transition-smooth: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.25s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
    background-color: var(--bg-color);
}

body {
    font-family: var(--font-body);
    color: var(--text-color);
    overflow-x: hidden;
    cursor: none; /* Hide default cursor to show custom cursor */
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-color);
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Preloader */
.loader-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: var(--bg-color);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), visibility 1s;
}

.loader-container.fade-out {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
    width: 300px;
}

.loader-logo {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: 0.5rem;
    margin-bottom: 2rem;
    position: relative;
    background: linear-gradient(90deg, #fff, var(--primary-color), #fff);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shine 3s linear infinite;
}

.loader-bar-outer {
    width: 100%;
    height: 2px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.loader-bar-inner {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), var(--primary-color));
    box-shadow: 0 0 10px var(--primary-color);
    transition: width 0.3s ease;
}

.loader-text {
    font-size: 0.75rem;
    letter-spacing: 0.2rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
}

/* Custom Cursor */
.custom-cursor {
    width: 8px;
    height: 8px;
    background-color: var(--primary-color);
    border-radius: 50%;
    position: fixed;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 10000;
    transition: width 0.2s, height 0.2s, background-color 0.2s;
}

.custom-cursor-glow {
    width: 40px;
    height: 40px;
    border: 1px solid rgba(0, 243, 255, 0.3);
    border-radius: 50%;
    position: fixed;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 9999;
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.05);
}

/* Cursor Hover states */
body.hovering .custom-cursor {
    width: 24px;
    height: 24px;
    background-color: rgba(255, 51, 102, 0.2);
    border: 1px solid var(--primary-color);
}
body.hovering .custom-cursor-glow {
    width: 60px;
    height: 60px;
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(255, 51, 102, 0.2);
}

/* Canvas background */
#canvas-3d {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: 1;
    pointer-events: auto; /* Allow dragging the 3D model */
    background: radial-gradient(circle at 50% 50%, #0d0c22 0%, #070610 80%);
}

/* UI Overlay Wrapper */
.ui-wrapper {
    position: relative;
    z-index: 2;
    width: 100%;
    pointer-events: none; /* Let clicks pass to 3D canvas except on children */
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2.5rem 4.5rem;
    pointer-events: auto;
    z-index: 100;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-color);
    text-decoration: none;
    letter-spacing: 0.1rem;
}

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

.nav-links {
    display: flex;
    gap: 3rem;
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: 0.75rem 2rem;
    border-radius: 100px;
}

.nav-item {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.15rem;
    position: relative;
    transition: var(--transition-fast);
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: var(--transition-fast);
}

.nav-item:hover, .nav-item.active {
    color: var(--text-color);
}

.nav-item.active::after {
    width: 100%;
    background-color: var(--primary-color);
}

/* Sound Wave Animation Button */
.sound-toggle-btn {
    background: transparent;
    border: none;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.15rem;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: var(--transition-fast);
}

.sound-wave {
    display: flex;
    align-items: flex-end;
    gap: 3px;
    width: 20px;
    height: 15px;
}

.sound-wave span {
    display: block;
    width: 2px;
    background-color: var(--text-color);
    height: 100%;
    transition: var(--transition-fast);
}

/* Animated wave when sound is ON */
.sound-toggle-btn.playing .sound-wave span {
    animation: waveBounce 1.2s infinite ease-in-out alternate;
}
.sound-toggle-btn.playing .sound-wave span:nth-child(1) { animation-delay: 0.1s; }
.sound-toggle-btn.playing .sound-wave span:nth-child(2) { animation-delay: 0.4s; }
.sound-toggle-btn.playing .sound-wave span:nth-child(3) { animation-delay: 0.2s; }
.sound-toggle-btn.playing .sound-wave span:nth-child(4) { animation-delay: 0.6s; }

/* Flat wave when sound is OFF */
.sound-toggle-btn:not(.playing) .sound-wave span {
    height: 3px !important;
}

/* Main Container & Sections */
.scroll-container {
    width: 100%;
    display: flex;
    flex-direction: column;
}

.section {
    min-height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    padding: 0 10%;
    position: relative;
}

.section-content {
    max-width: 650px;
    pointer-events: auto; /* Allow clicks on contents */
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.section.active .section-content {
    opacity: 1;
    transform: translateY(0);
}

.section-tag {
    font-size: 0.8rem;
    letter-spacing: 0.25rem;
    color: var(--primary-color);
    font-weight: 600;
    text-transform: uppercase;
    display: block;
    margin-bottom: 1.5rem;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 2rem;
    letter-spacing: -0.05rem;
}

.section-desc {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
}

/* Section 1: Hero specifically */
.hero-section {
    justify-content: flex-start;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 7.5vw;
    font-weight: 800;
    line-height: 0.9;
    letter-spacing: -0.2vw;
    margin-bottom: 2rem;
    position: relative;
    color: transparent;
    -webkit-text-stroke: 1.5px rgba(255, 255, 255, 0.8);
    background: linear-gradient(135deg, #fff 30%, rgba(255,255,255,0.1) 70%);
    -webkit-background-clip: text;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    max-width: 500px;
    line-height: 1.5;
    color: var(--text-muted);
}

.highlight {
    color: #fff;
    font-weight: 600;
    position: relative;
}

.scroll-prompt {
    margin-top: 5rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    font-size: 0.75rem;
    letter-spacing: 0.25rem;
    color: var(--text-muted);
    font-weight: 600;
}

.arrow-down {
    width: 2px;
    height: 40px;
    background: linear-gradient(to bottom, var(--primary-color), transparent);
    position: relative;
    overflow: hidden;
}

.arrow-down::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background-color: var(--secondary-color);
    animation: scrollIndicator 2s infinite ease-in-out;
}

/* Section 2: Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 2rem 1.5rem;
    border-radius: 12px;
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
}

.feature-card:hover {
    border-color: rgba(0, 243, 255, 0.3);
    background: var(--glass-bg-hover);
    transform: translateY(-8px);
}

.feature-card h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.feature-card p {
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--text-muted);
}

/* Section 3: Lab Playground Controls */
.lab-controls {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    margin-bottom: 2rem;
}

.lab-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 1.2rem 2.5rem;
    border-radius: 50px;
    color: var(--text-color);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.2rem;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
}

.lab-btn::before {
    content: '';
    position: absolute;
    left: 1.5rem;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-muted);
    transition: var(--transition-fast);
}

.lab-btn .btn-content {
    margin-left: 1.5rem;
}

.lab-btn:hover {
    border-color: rgba(255, 255, 255, 0.3);
    background: var(--glass-bg-hover);
}

.lab-btn.active {
    border-color: var(--secondary-color);
    background: rgba(0, 243, 255, 0.05);
    box-shadow: 0 0 25px rgba(0, 243, 255, 0.1);
}

.lab-btn.active::before {
    background-color: var(--secondary-color);
    box-shadow: 0 0 10px var(--secondary-color);
}

/* Custom glow for different skins */
#btn-chrome.active {
    border-color: var(--secondary-color);
    box-shadow: 0 0 25px rgba(0, 243, 255, 0.15);
}
#btn-chrome.active::before { background-color: var(--secondary-color); }

#btn-wireframe.active {
    border-color: var(--primary-color);
    box-shadow: 0 0 25px rgba(255, 51, 102, 0.15);
}
#btn-wireframe.active::before { background-color: var(--primary-color); }

#btn-particles.active {
    border-color: var(--accent-color);
    box-shadow: 0 0 25px rgba(112, 0, 255, 0.2);
}
#btn-particles.active::before { background-color: var(--accent-color); }

#btn-glass.active {
    border-color: #fff;
    box-shadow: 0 0 25px rgba(255, 255, 255, 0.15);
}
#btn-glass.active::before { background-color: #fff; }

.lab-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    letter-spacing: 0.05rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Section 4: Contact Grid */
.contact-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 5rem;
    margin-top: 2rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    position: relative;
}

.form-group label {
    font-size: 0.75rem;
    letter-spacing: 0.15rem;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.form-group input, .form-group textarea {
    background: transparent;
    border: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    padding: 0.8rem 0;
    color: #fff;
    font-family: var(--font-body);
    font-size: 1.05rem;
    outline: none;
    transition: var(--transition-fast);
}

.input-focus-line {
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--secondary-color), var(--primary-color));
    transition: var(--transition-fast) cubic-bezier(0.25, 0.8, 0.25, 1);
    transform: translateX(-50%);
}

.form-group input:focus ~ .input-focus-line,
.form-group textarea:focus ~ .input-focus-line {
    width: 100%;
}

.submit-btn {
    margin-top: 1rem;
    background: var(--text-color);
    color: var(--bg-color);
    border: none;
    padding: 1.2rem 2.5rem;
    border-radius: 50px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.25rem;
    cursor: pointer;
    overflow: hidden;
    position: relative;
    transition: var(--transition-smooth);
}

.submit-btn:hover {
    background: var(--primary-color);
    color: #fff;
    box-shadow: 0 8px 30px rgba(255, 51, 102, 0.3);
    transform: translateY(-3px);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.info-block h4 {
    font-size: 0.75rem;
    letter-spacing: 0.2rem;
    color: var(--primary-color);
    margin-bottom: 0.8rem;
}

.info-block p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-muted);
}

.social-links {
    display: flex;
    gap: 1.5rem;
    margin-top: 0.5rem;
}

.social-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.social-link:hover {
    color: var(--secondary-color);
}

/* Animations */
@keyframes shine {
    to {
        background-position: 200% center;
    }
}

@keyframes waveBounce {
    0% { height: 20%; }
    100% { height: 100%; }
}

@keyframes scrollIndicator {
    0% { transform: translateY(-100%); }
    50% { transform: translateY(100%); }
    100% { transform: translateY(-100%); }
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    .header {
        padding: 2rem 3rem;
    }
    
    /* Elegant floating bottom dock for tablet/mobile */
    .nav-links {
        position: fixed;
        bottom: 1.5rem;
        left: 50%;
        transform: translateX(-50%);
        width: calc(100% - 4rem);
        max-width: 480px;
        justify-content: space-around;
        padding: 0.8rem 1.5rem;
        gap: 1rem;
        background: rgba(7, 6, 16, 0.7);
        backdrop-filter: blur(20px);
        border: 1px solid rgba(255, 255, 255, 0.12);
        box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6);
        z-index: 1000;
    }
    
    .nav-item {
        font-size: 0.75rem;
        letter-spacing: 0.1rem;
    }

    .section {
        padding: 0 8%;
    }

    .hero-title {
        font-size: 10vw;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 1.5rem 2rem;
    }
    
    /* Hide sound toggle text, display only animated wave to save space */
    .sound-toggle-btn {
        padding: 0.5rem;
    }
    .sound-text {
        display: none;
    }
    
    .nav-links {
        width: calc(100% - 2rem);
        padding: 0.7rem 1rem;
    }

    .section {
        padding: 7rem 6% 6rem 6%;
        justify-content: center;
        text-align: center;
    }

    .section-content {
        display: flex;
        flex-direction: column;
        align-items: center;
        width: 100%;
    }

    .hero-title {
        font-size: clamp(2rem, 9.2vw, 4.2rem);
        letter-spacing: -0.05rem;
        margin-bottom: 1.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
        max-width: 100%;
    }

    .scroll-prompt {
        margin-top: 3.5rem;
    }

    .section-title {
        font-size: clamp(1.8rem, 7vw, 2.5rem);
        margin-bottom: 1.5rem;
        line-height: 1.2;
    }

    .section-desc {
        font-size: 0.95rem;
        line-height: 1.6;
        margin-bottom: 2rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.2rem;
        margin-top: 1.5rem;
        width: 100%;
    }
    
    .feature-card {
        padding: 1.5rem;
    }

    .lab-controls {
        width: 100%;
        align-items: center;
        gap: 0.9rem;
    }

    .lab-btn {
        width: 100%;
        max-width: 320px;
        justify-content: center;
        padding: 1rem 1.5rem;
    }
    
    .lab-btn::before {
        left: 1.2rem;
    }
    
    .lab-btn .btn-content {
        margin-left: 0;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3.5rem;
        margin-top: 1rem;
        width: 100%;
    }

    .contact-form {
        gap: 1.5rem;
    }

    .contact-info {
        gap: 2.2rem;
        align-items: center;
    }
    
    .info-block p {
        font-size: 0.95rem;
    }
    
    .social-links {
        justify-content: center;
    }

    /* Hide custom cursor on mobile touch screens for native feel */
    .custom-cursor, .custom-cursor-glow {
        display: none !important;
    }
    body {
        cursor: auto;
    }
}