/* 
 * Style Guide: mobile-02-industrialhumanist_light  (Defaulted to DA-Dark for Part 2)
 * Adapted for deeply responsive, glassmorphic SaaS architecture.
 */

:root {
    /* DEFAULT DARK MODE (Flipped from original reqs) */
    --bg-primary: #12100F;      /* Deep rich dark */
    --bg-surface: #1E1C1A;      /* Elevated Dark */
    --bg-surface-warm: #262320; /* Warmer Elevation */
    
    --text-primary: #FAF8F4;
    --text-secondary: #B5B0A6;
    --text-muted: #827E77;
    
    --border-default: rgba(255, 255, 255, 0.08); /* Clean dark borders */
    --border-strong: rgba(255, 255, 255, 0.15);
    
    --accent-primary: #D48C65;  /* Glowing Terracotta */
    --accent-soft: rgba(212, 140, 101, 0.15);
    --glow-primary: rgba(212, 140, 101, 0.3); /* For box-shadow glows */
    
    --status-positive: #5A9E6F;
    --status-negative: #C4574C;

    /* Typographic Settings (IBM Plex Sans) */
    --font-family: 'IBM Plex Sans', sans-serif;
    --fw-normal: 400;
    --fw-medium: 500;
    --fw-semibold: 600;

    /* Border Radii */
    --radius-pill: 36px;
    --radius-card: 16px;
    --radius-btn: 8px;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

/* Light Mode Overrides */
[data-theme="light"] {
    --bg-primary: #FAF8F4;
    --bg-surface: #FFFFFF;
    --bg-surface-warm: #F5F2EC;
    
    --text-primary: #2C2C2C;
    --text-secondary: #6B6B6B;
    --text-muted: #9A9A9A;
    
    --border-default: #E5E2DC;
    --border-strong: #D0CCC4;
    
    --accent-primary: #C67A52;
    --accent-soft: rgba(198, 122, 82, 0.15);
    --glow-primary: rgba(198, 122, 82, 0.2);
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

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

/* Canvas Background */
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    pointer-events: none; /* Let clicks pass through */
    opacity: 0.4; /* Keep subtle */
}

/* Typography Classes */
.mb-2 { margin-bottom: 0.5rem; }
.mt-2 { margin-top: 0.5rem; }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); font-size: 0.85rem; }

/* Layout & Containers */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.flex-col {
    display: flex;
    flex-direction: column;
}

/* Header & Navigation */
.site-header {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(var(--bg-primary), 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-default);
    z-index: 1000;
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

/* Fallback for bg transparency */
[data-theme="light"] .site-header { background-color: rgba(250, 248, 244, 0.85); }
[data-theme="dark"] .site-header { background-color: rgba(18, 16, 15, 0.85); }

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: var(--fw-semibold);
    letter-spacing: -0.3px;
    color: var(--text-primary);
}

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

.main-nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: var(--fw-medium);
    font-size: 14px;
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link:hover::after {
    width: 100%;
}

.controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Buttons & Inputs */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--radius-btn);
    font-weight: var(--fw-medium);
    font-size: 14px;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
}

.btn-primary {
    background-color: var(--accent-primary);
    color: #FFFFFF;
}

.btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--glow-primary);
}

.btn-secondary {
    background-color: var(--bg-surface-warm);
    color: var(--text-primary);
    border: 1px solid var(--border-strong);
}

.btn-secondary:hover {
    background-color: var(--border-default);
    transform: translateY(-2px);
}

.pill-btn {
    background-color: transparent;
    border: 1px solid var(--border-default);
    color: var(--text-primary);
    padding: 6px 12px;
    border-radius: var(--radius-pill);
    font-size: 12px;
    font-weight: var(--fw-semibold);
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
}

.pill-btn:hover {
    border-color: var(--accent-primary);
}

.active-lang {
    color: var(--accent-primary);
}
.inactive-lang {
    color: var(--text-muted);
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    border-radius: 50%;
    transition: color 0.2s, background-color 0.2s;
}

.icon-btn:hover {
    color: var(--accent-primary);
    background-color: var(--accent-soft);
}

.menu-toggle {
    display: none;
}

/* Specific logic to hide appropriate icons based on theme */
[data-theme="dark"] .theme-icon-dark { display: none; }
[data-theme="dark"] .theme-icon-light { display: block; }
[data-theme="light"] .theme-icon-dark { display: block; }
[data-theme="light"] .theme-icon-light { display: none; }

/* Sections Common */
section {
    padding: 80px 0; /* Tightened from 100px */
}

.section-title {
    font-size: 32px;
    font-weight: var(--fw-semibold);
    letter-spacing: -0.5px;
    line-height: 1.15;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.divider {
    height: 2px;
    width: 64px;
    background-color: var(--accent-primary);
    margin-bottom: 40px;
    border-radius: 2px;
}

.center { text-align: center; }
.center-div { margin-left: auto; margin-right: auto; }

/* Glass Panels (Reusable Glassmorphism) */
.glass-panel {
    background: rgba(var(--bg-surface), 0.5); /* Requires separate RGB vars, let's use standard background for now but with a blur */
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-card);
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-fast);
}
[data-theme="dark"] .glass-panel {
    background-color: rgba(30, 28, 26, 0.4);
}
[data-theme="light"] .glass-panel {
    background-color: rgba(255, 255, 255, 0.6);
}

.glass-panel:hover {
    transform: translateY(-8px);
    border-color: var(--accent-soft);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.3), 0 0 12px var(--glow-primary); 
}
[data-theme="light"] .glass-panel:hover {
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.05), 0 0 12px var(--glow-primary); 
}

/* Hero Section */
.hero-section {
    min-height: 65vh; /* Reduced height to reveal content below */
    display: flex;
    align-items: center;
    padding-top: 100px;
    padding-bottom: 60px;
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 2; /* Sit above canvas */
}

.hero-title {
    font-size: 56px;
    font-weight: var(--fw-semibold);
    letter-spacing: -1px;
    line-height: 1.05;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 48px;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

/* Services Grid */
.services-section {
    border-top: 1px solid var(--border-default);
    border-bottom: 1px solid var(--border-default);
    /* No solid background anymore to let canvas bleed through slightly */
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.service-card {
    padding: 32px;
}

.card-icon-wrapper {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background-color: var(--accent-soft);
    color: var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.card-title {
    font-size: 18px;
    font-weight: var(--fw-semibold);
    margin-bottom: 12px;
    letter-spacing: -0.3px;
}

.card-desc {
    font-size: 14px;
    color: var(--text-secondary);
}

/* About Section */
.about-section {
    padding-bottom: 40px; /* Reduced gap before Methodology */
}

.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.body-text {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.glass-card {
    padding: 32px;
    position: relative;
    overflow: hidden;
    background-color: transparent !important; /* Managed by .glass-panel classes theoretically, but here we just use borders */
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-card);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.stat-row {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}
.stat-row:last-child { margin-bottom: 0; }

.accent-icon {
    color: var(--accent-primary);
    width: 32px;
    height: 32px;
}

.stat-row h4 {
    font-size: 16px;
    font-weight: var(--fw-semibold);
    color: var(--text-primary);
}

/* Methodology */
.methodology-section {
    padding-top: 40px; /* Reduced gap from About */
}

.methodology-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); /* Auto spanning */
    gap: 24px;
    text-align: left; /* Refined to left-align inside cards */
    margin-top: 40px;
}

.method-step {
    padding: 24px;
    display: flex;
    flex-direction: column;
}

.step-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 16px; /* Moved to left align */
    border-radius: 12px;
    background-color: var(--accent-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
    transition: color 0.3s, background-color 0.3s;
}

.method-step h4 {
    font-size: 18px;
    font-weight: var(--fw-semibold);
    margin-bottom: 8px;
}

.method-step p {
    font-size: 14px;
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--border-default);
    padding: 48px 0 32px 0;
    backdrop-filter: blur(5px);
}

.footer-grid {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap; /* Allows stacking on mobile */
    gap: 32px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
}

.footer-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--accent-primary);
}

.small-icon {
    width: 16px; height: 16px;
}

.footer-legal {
    width: 100%; /* Forcing to new line */
    border-top: 1px solid var(--border-default);
    padding-top: 24px;
    text-align: center;
}

/* Intersection Observer Animations */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
    will-change: opacity, transform;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Overrides */
@media (max-width: 900px) {
    .hero-title { font-size: 42px; }
    .about-container { grid-template-columns: 1fr; gap: 40px;}
    .footer-grid { flex-direction: column; text-align: center; }
}

@media (max-width: 768px) {
    .main-nav { display: none; } /* Hide for simple mobile */
    .menu-toggle { display: flex; }
    .hero-actions { flex-direction: column; }
    
    .span-full-tablet {
        max-width: 100% !important;
    }
}