/* 
   ==========================================================================
   SYSTEM CONFIGURATION (FULL PRODUCTION v32)
   - Hero CTA Button Added
   - Footer Projects Centering FIXED (margin: auto)
   ==========================================================================
*/

:root {
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --radius-card: 16px;
    --radius-btn: 8px;
    
    /* Animation Physics */
    --anim-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --anim-speed: 0.25s;
    --anim-slow: 0.7s;        
    --anim-dropdown: 0.07s;
    
    --accent-primary: #3b82f6; 
    --accent-hover: #6596ff;
    --accent-text: #ffffff;
    
    --z-header: 1000;
    --z-dropdown: 1100;
}

/* DARK THEME (The Void) */
:root, [data-theme="dark"] {
    color-scheme: dark;
    
    --bg-page: #000000;
    --bg-card: #121212;
    --bg-card-hover: #1a1a1a;
    
    --bg-header-scroll: rgba(0, 0, 0, 0.8); 
    
    /* Hero Visuals */
    --hero-gradient: radial-gradient(circle at 50% -20%, rgba(59, 130, 246, 0.3), transparent 70%);
    --grid-color: rgba(255, 255, 255, 0.05);
    
    --border-color: transparent;   
    --divider-color: #2a2a2a;
    
    --text-main: #ffffff;
    --text-muted: #9ca3af;
    
    --code-bg: #080808;
    
    --control-bg-hover: rgba(255, 255, 255, 0.1);
    --details-hover-bg: rgba(255, 255, 255, 0.05);
    
    --dropdown-bg: #121212;
    --dropdown-border: #2a2a2a;
    
    --shadow-color: rgba(0, 0, 0, 0.5);

    /* BANNER OVERLAY */
    --banner-overlay-start: rgba(0,0,0,0); 
    --banner-overlay-mid: rgba(0,0,0,0.6);
    --banner-overlay-end: #000000;
    
    --banner-text: #ffffff;
    --banner-text-shadow: 0 2px 10px rgba(0,0,0,0.8);
    
    --banner-btn-bg: #ffffff;
    --banner-btn-text: #000000;
    --banner-btn-hover: #f0f0f0;
    --banner-btn2-bg: rgba(255,255,255,0.16);
    --banner-btn2-bg-hover: rgba(255,255,255,0.30);
    --banner-btn2-text: #ffffff;
    --banner-btn2-border: rgba(255,255,255,0.22);

    /* BADGE LOGIC */
    --badge-bg-l: 15%;
    --badge-text-l: 85%;
}

/* LIGHT THEME (La2Tools Look) */
[data-theme="light"] {
    color-scheme: light;
    
    --bg-page: #f0f2f5;
    --bg-card: #ffffff;
    --bg-card-hover: #ffffff;
    
    --bg-header-scroll: rgba(255, 255, 255, 0.95);
    
    /* Blue Spotlight & Grid */
    --hero-gradient: radial-gradient(circle at 50% -20%, rgba(59, 156, 246, 0.5), transparent 60%);
    --grid-color: rgba(255, 255, 255, 0.5);
    
    --border-color: transparent;
    --divider-color: #ebeef4;
    
    --text-main: #09090b;
    --text-muted: #52525b;
    
    --code-bg: #f0f2f5;
    
    --control-bg-hover: rgba(0, 0, 0, 0.05);
    --details-hover-bg: rgba(0, 0, 0, 0.03);
    
    --dropdown-bg: #ffffff;
    --dropdown-border: #e5e7eb;
    
    --shadow-color: rgba(67, 73, 141, 0.2); 

    /* BANNER OVERLAY */
    --banner-overlay-start: rgba(255,255,255,0);
    --banner-overlay-mid: rgba(255,255,255,0.7);
    --banner-overlay-end: #ffffff;
    
    --banner-text: #000000;
    --banner-text-shadow: none;
    
    --banner-btn-bg: #000000;
    --banner-btn-text: #ffffff;
    --banner-btn-hover: #333333;
    --banner-btn2-bg: rgba(0,0,0,0.07);
    --banner-btn2-bg-hover: rgba(0,0,0,0.14);
    --banner-btn2-text: #09090b;
    --banner-btn2-border: rgba(0,0,0,0.18);

    /* BADGE LOGIC */
    --badge-bg-l: 92%;
    --badge-text-l: 25%;
}

/* GLOBAL RESET */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    background-color: var(--bg-page);
    color: var(--text-main);
    font-family: var(--font-main);
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
    min-height: 100vh;
    display: flex; flex-direction: column;
}

/* --- HEADER --- */
header {
    background: transparent;
    padding: 1.5rem 0;
    position: fixed; top: 0; left: 0; width: 100%;
    z-index: var(--z-header);
    transition: background-color 0.3s ease, padding 0.3s ease, backdrop-filter 0.3s ease;
    border-bottom: 1px solid transparent;
}

header.scrolled {
    background-color: var(--bg-header-scroll);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    padding: 1rem 0;
    border-bottom: 1px solid var(--divider-color);
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; width: 100%; }
.header-content { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }

.logo {
    font-weight: 800; font-size: 1.4rem; color: var(--text-main);
    letter-spacing: -0.02em; text-decoration: none; flex-shrink: 0;
}

/* --- NAV WRAPPER --- */
.nav-wrapper {
    flex-grow: 1;
    display: flex;
    align-items: center;
    overflow: hidden;
    position: relative;
    margin: 0 1.5rem;
    mask-image: linear-gradient(to right, transparent, black 20px, black calc(100% - 20px), transparent);
    -webkit-mask-image: linear-gradient(to right, transparent, black 20px, black calc(100% - 20px), transparent);
}

.nav-arrow {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.5rem;
    display: flex; align-items: center; justify-content: center;
    transition: color 0.2s, transform 0.1s, opacity 0.2s ease;
    z-index: 2;
}
.nav-arrow:hover { color: var(--text-main); transform: scale(1.2); }

.nav-arrow.hidden {
    opacity: 0;
    pointer-events: none;
    cursor: default;
}

/* --- NAV MENU --- */
.nav-menu {
    display: flex; gap: 1.5rem; overflow-x: auto;
    padding: 0 1rem;
    scrollbar-width: none;
    align-items: center;
    scroll-behavior: smooth;
    white-space: nowrap;
}
.nav-menu::-webkit-scrollbar { display: none; }

.nav-link {
    color: var(--text-muted); 
    text-decoration: none;
    font-size: 0.9rem; 
    font-weight: 500; 
    white-space: nowrap;
    cursor: pointer;
    transition: color 0.2s ease;
}
.nav-link:hover { color: var(--accent-primary); }
.nav-link.active { color: var(--accent-primary); font-weight: 500; }

/* --- CONTROLS & CONTACT BUTTON --- */
.controls { display: flex; gap: 0.8rem; align-items: center; flex-shrink: 0; }

.btn-header-contact {
    background: var(--text-main); color: var(--bg-card);
    border: none; padding: 0 1.2rem; height: 36px;
    border-radius: var(--radius-btn); cursor: pointer;
    font-family: var(--font-main); font-size: 0.85rem; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    transition: transform var(--anim-speed) var(--anim-spring), opacity 0.2s;
    text-decoration: none;
    white-space: nowrap;
}
.btn-header-contact:hover { transform: scale(1.05); opacity: 0.9; }
.btn-header-contact:active { transform: scale(0.95); }

.control-item {
    background: transparent; color: var(--text-main); border: 1px solid transparent;
    padding: 0 0.8rem; border-radius: var(--radius-btn); cursor: pointer;
    font-family: var(--font-main); font-size: 0.85rem; font-weight: 500;
    height: 36px; display: flex; align-items: center; justify-content: center;
    transition: background-color 0.2s, transform var(--anim-speed) var(--anim-spring);
    user-select: none;
}
.control-item:hover { background: var(--control-bg-hover); transform: scale(1.05); }

/* --- CUSTOM DROPDOWN --- */
.custom-dropdown { position: relative; z-index: 10; }
.dropdown-trigger { display: flex; align-items: center; gap: 0.5rem; }
.dropdown-trigger svg { transition: transform var(--anim-dropdown) ease-out; }
.custom-dropdown.active .dropdown-trigger svg { transform: rotate(180deg); }

.dropdown-menu {
    position: absolute; top: calc(100% + 8px); right: 0; width: 160px;
    background: var(--dropdown-bg); border: 1px solid var(--dropdown-border);
    border-radius: 12px; padding: 0.5rem; box-shadow: 0 10px 30px var(--shadow-color);
    opacity: 0; transform: translateY(-10px) scale(0.95); pointer-events: none;
    transition: opacity var(--anim-dropdown) ease-out, transform var(--anim-dropdown) ease-out;
}
.custom-dropdown.active .dropdown-menu { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }

.dropdown-option {
    padding: 0.6rem 0.8rem; border-radius: 6px; cursor: pointer;
    font-size: 0.9rem; color: var(--text-muted); transition: all 0.2s;
}
.dropdown-option:hover { background: var(--control-bg-hover); color: var(--text-main); }
.dropdown-option.selected { color: var(--text-main); font-weight: 600; background: var(--control-bg-hover); }

/* --- HERO SECTION --- */
.hero-wrapper {
    width: 100%; background-color: var(--bg-page);
    padding: 12rem 0 2rem 0; text-align: left; position: relative;
    background-image: 
        linear-gradient(to right, var(--grid-color) 1px, transparent 1px),
        linear-gradient(to bottom, var(--grid-color) 1px, transparent 1px),
        var(--hero-gradient);
    background-size: 60px 60px, 60px 60px, 100% 100%;
    background-position: 0 0, 0 0, center center;
    background-repeat: repeat, repeat, no-repeat;
}
.hero-wrapper h1 {
    font-size: 3.5rem; font-weight: 800; letter-spacing: -0.04em;
    margin-bottom: 1rem; color: var(--text-main); line-height: 1.1; position: relative; z-index: 2;
}
.hero-wrapper p { font-size: 1.2rem; color: var(--text-muted); max-width: 600px; position: relative; z-index: 2; margin-bottom: 2rem; }

/* NEW HERO BUTTON */
.btn-hero {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--accent-primary);
    color: var(--accent-text);
    font-size: 1.1rem;
    font-weight: 700;
    padding: 0.8rem 2.5rem;
    border-radius: var(--radius-btn);
    border: none;
    cursor: pointer;
    position: relative; z-index: 2;
    transition: background-color 0.2s, transform var(--anim-speed) var(--anim-spring);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}
.btn-hero:hover {
    background-color: var(--accent-hover);
    transform: scale(1.05);
}
.btn-hero:active {
    transform: scale(0.95);
}

/* --- SECTION HEADER --- */
.section-header { margin: 4rem 0 2.5rem 0; }
.section-header h2 { font-size: 2.2rem; font-weight: 800; color: var(--text-main); }

/* --- PRODUCT CARD --- */
.product-list { display: flex; flex-direction: column; gap: 3rem; margin-bottom: 6rem; }
.product-card {
    background: var(--bg-card); border-radius: var(--radius-card);
    overflow: hidden; display: flex; flex-direction: column;
    position: relative; box-shadow: 0 4px 40px var(--shadow-color);
    scroll-margin-top: 100px;
}
.card-banner {
    width: 100%; height: 380px; position: relative; background: #000;
    cursor: zoom-in; overflow: hidden;
}
.card-banner img {
    width: 100%; height: 100%; object-fit: cover; object-position: top center; transition: transform 0.5s ease;
}
.product-card:hover .card-banner img { transform: scale(1.03); }
.card-overlay {
    position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(to bottom, var(--banner-overlay-start) 0%, var(--banner-overlay-mid) 50%, var(--banner-overlay-end) 100%);
    display: flex; align-items: flex-end; padding: 2rem; z-index: 2; pointer-events: none;
}
.card-header-content { width: 100%; display: flex; justify-content: space-between; align-items: flex-end; }
.card-title-group { display: flex; flex-direction: column; gap: 0.5rem; padding-right: 2rem; }
.card-title-group h2 {
    font-size: 2rem; font-weight: 800; color: var(--banner-text); margin: 0; line-height: 1.1;
    text-shadow: var(--banner-text-shadow);
}
.chronicle-badges { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.5rem; }
.badge {
    font-size: 0.75rem; font-weight: 700; padding: 0.25rem 0.6rem;
    border-radius: 6px; text-transform: uppercase; white-space: nowrap;
    color: var(--badge-text, #fff); background: var(--badge-bg, rgba(255,255,255,0.1)); border: none;
}
.btn-action {
    pointer-events: auto; display: inline-flex; align-items: center; justify-content: center;
    background: var(--banner-btn-bg); color: var(--banner-btn-text);
    padding: 0.7rem 2rem; text-decoration: none; border-radius: var(--radius-btn);
    font-weight: 700; font-size: 1rem; border: none; box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: transform var(--anim-speed) var(--anim-spring), background-color 0.2s; cursor: pointer;
}
.btn-action:hover { background: var(--banner-btn-hover); transform: scale(1.08); }
.btn-action:active { transform: scale(0.95); }
.card-actions { display: flex; gap: 0.75rem; align-items: flex-end; flex-shrink: 0; }
.btn-action-secondary { background: var(--banner-btn2-bg); color: var(--banner-btn2-text); box-shadow: 0 4px 15px rgba(0,0,0,0.1), inset 0 0 0 1px var(--banner-btn2-border); }
.btn-action-secondary:hover { background: var(--banner-btn2-bg-hover); }
.card-description-block { padding: 2rem 2rem 1.5rem 2rem; }
.card-description-block p { font-size: 1.1rem; color: var(--text-main); opacity: 0.9; }

/* --- ACCORDION --- */
.accordion-toggle {
    width: 100%; background: var(--bg-card); border: none; border-top: 1px solid var(--divider-color);
    color: var(--text-muted); padding: 1.2rem; cursor: pointer;
    font-family: var(--font-main); font-size: 0.9rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.05em;
    display: flex; align-items: center; justify-content: center; gap: 0.5rem; transition: all 0.2s;
}
.accordion-toggle:hover { color: var(--text-main); background: var(--details-hover-bg); }
.accordion-toggle svg { transition: transform 0.4s; }
.accordion-toggle.open svg { transform: rotate(180deg); }
.card-details {
    background: var(--bg-card); max-height: 0; overflow: hidden;
    transition: max-height var(--anim-slow) cubic-bezier(0, 1, 0, 1);
}
.card-details.open { max-height: 2000px; transition: max-height var(--anim-slow) ease-in-out; }
.card-details-inner { padding: 0 2rem 2.5rem 2rem; }
.info-label { font-size: 0.7rem; text-transform: uppercase; font-weight: 700; color: var(--text-muted); margin-bottom: 0.5rem; opacity: 0.7; }
.changelog { font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; white-space: pre-wrap; background: var(--code-bg); padding: 1rem; border-radius: 8px; max-height: 420px; overflow-y: auto; }
.client-grid-container {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); 
    gap: 0.5rem 2rem; font-family: var(--font-main); font-size: 0.9rem; color: var(--text-muted);
}
.client-item { padding: 2px 0; }
.client-item:hover { color: var(--text-main); }

/* --- LIGHTBOX --- */
.lightbox {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.9); backdrop-filter: blur(10px);
    z-index: 9999; display: flex; justify-content: center; align-items: center;
    opacity: 0; pointer-events: none; transition: opacity 0.3s ease; cursor: zoom-out;
}
.lightbox.active { opacity: 1; pointer-events: auto; }
.lightbox img {
    max-width: 90%; max-height: 90%; object-fit: contain;
    border-radius: 8px; box-shadow: 0 10px 40px rgba(0,0,0,0.5);
    transform: scale(0.9); transition: transform var(--anim-speed) var(--anim-spring);
}
.lightbox.active img { transform: scale(1); }

/* --- CONTACTS (Expanded) --- */
#contacts { 
    padding: 8rem 1.5rem 6rem 1.5rem; 
    border-top: 1px solid var(--divider-color); 
    background: var(--bg-page); text-align: center; display: flex; 
    flex-direction: column; align-items: center; transition: background-color 0.6s ease;
}
#contacts.highlight { background-color: rgba(59, 130, 246, 0.15); }

#contact-title { font-size: 2.2rem; margin-bottom: 3rem; color: var(--text-main); font-weight: 800; }

.contact-links { 
    display: flex; gap: 3rem; flex-wrap: wrap; justify-content: center; margin-bottom: 4rem;
}
.contact-item { 
    color: var(--text-muted); text-decoration: none; 
    font-size: 1.3rem; display: flex; align-items: center; gap: 0.8rem; font-weight: 500;
}
.contact-item span { color: var(--text-main); border-bottom: 1px solid var(--divider-color); transition: 0.2s; }
.contact-item:hover span { border-color: var(--accent-primary); color: var(--accent-primary); }

/* --- FOOTER PROJECTS (FIXED CENTERING) --- */
.footer-projects {
    border-top: 1px solid var(--divider-color);
    padding-top: 2rem;
    width: 100%;
    max-width: 800px;
    /* FIX: USE AUTO MARGINS TO CENTER BLOCK ELEMENT */
    margin: 2rem auto 0 auto; 
    display: flex; flex-direction: column; align-items: center;
    gap: 1rem;
    text-align: center;
}

.footer-projects-title {
    font-size: 0.9rem; text-transform: uppercase; font-weight: 700; color: var(--text-muted); letter-spacing: 0.05em;
    width: 100%; text-align: center;
}

.project-list {
    display: flex; gap: 1.5rem; flex-wrap: wrap; justify-content: center;
    width: 100%;
}

.project-link {
    font-size: 0.95rem; color: var(--text-main); text-decoration: none; 
    opacity: 0.7; transition: opacity 0.2s, color 0.2s;
}
.project-link:hover { opacity: 1; color: var(--accent-primary); }

.footer-partners {
    border-top: 1px solid var(--divider-color);
    padding-top: 2rem;
    width: 100%;
    max-width: 800px;
    margin: 2rem auto 0 auto; 
    display: flex; flex-direction: column; align-items: center;
    gap: 1rem;
    text-align: center;
}

.footer-partners-title {
    font-size: 0.9rem; text-transform: uppercase; font-weight: 700; color: var(--text-muted); letter-spacing: 0.05em;
    width: 100%; text-align: center;
}

.partner-list { 
    display: flex; gap: 1.5rem; flex-wrap: wrap; justify-content: center;
}

.partner-link {
    font-size: 1.6rem; color: var(--text-main); text-decoration: none; 
    opacity: 1; transition: opacity 0.2s, color 0.2s; font-weight: 800; border-bottom: 1px solid var(--divider-color); transition: 0.2s;
}

.partner-link:hover { opacity: 1; color: var(--accent-primary); border-color: var(--accent-primary);}

@media (max-width: 768px) {
    .nav-wrapper { margin: 0; mask-image: none; -webkit-mask-image: none; }
    .nav-arrow { display: none; }
    .controls { margin-left: auto; }
    .card-header-content { flex-direction: column; align-items: flex-start; gap: 1rem; }
    .card-actions { flex-direction: column; width: 100%; }
    .btn-action { width: 100%; }
    .hero-wrapper h1 { font-size: 2.5rem; }
    .contact-links { flex-direction: column; gap: 1.5rem; }
}