/* ==========================================================================
   Base & Theme Variables
   ========================================================================== */
:root {
    /* Color Palette - Dark Mode (Default) */
    --bg-body: #090d16;
    --bg-surface: #0f172a;
    --bg-surface-elevated: #1e293b;
    --bg-card: rgba(17, 24, 39, 0.85);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(99, 102, 241, 0.45);

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Accent & Brand Colors */
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.35);
    --secondary: #0ea5e9;
    --accent: #f59e0b;
    --whatsapp: #25d366;
    --whatsapp-hover: #20bd5a;
    --whatsapp-glow: rgba(37, 211, 102, 0.3);
    --success: #10b981;

    /* Shadows & Effects */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 32px rgba(0, 0, 0, 0.6);
    --glass-blur: blur(16px);
    
    /* Layout */
    --max-width: 1200px;
    --nav-height: 72px;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

[data-theme="light"] {
    --bg-body: #f8fafc;
    --bg-surface: #ffffff;
    --bg-surface-elevated: #f1f5f9;
    --bg-card: rgba(255, 255, 255, 0.9);
    --border-color: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(99, 102, 241, 0.5);

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;

    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-glow: rgba(79, 70, 229, 0.2);
    --secondary: #0284c7;
    --accent: #d97706;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 32px rgba(0, 0, 0, 0.12);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

ul {
    list-style: none;
}

button, input, textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

/* ==========================================================================
   Ambient Background Glows
   ========================================================================== */
.ambient-glow {
    position: fixed;
    width: 550px;
    height: 550px;
    border-radius: 50%;
    filter: blur(140px);
    opacity: 0.14;
    pointer-events: none;
    z-index: 0;
}

.glow-1 {
    top: -100px;
    left: -100px;
    background: radial-gradient(circle, var(--primary), transparent);
}

.glow-2 {
    top: 50%;
    right: -150px;
    background: radial-gradient(circle, var(--secondary), transparent);
}

/* ==========================================================================
   Layout Containers & Utilities
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    position: relative;
    z-index: 1;
}

.section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 3.5rem;
}

.section-badge {
    display: inline-block;
    padding: 0.35rem 0.95rem;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--primary);
    background-color: var(--primary-glow);
    border-radius: var(--radius-full);
    margin-bottom: 0.85rem;
}

.section-title {
    font-size: 2.35rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.gradient-text {
    background: linear-gradient(135deg, #818cf8, #38bdf8, #f472b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

/* ==========================================================================
   Buttons & Links
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    padding: 0.8rem 1.45rem;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: none;
    transition: all var(--transition-fast);
}

.btn-primary {
    background-color: var(--primary);
    color: #ffffff;
    box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--primary-glow);
}

.btn-whatsapp {
    background-color: var(--whatsapp);
    color: #ffffff;
    box-shadow: 0 4px 14px var(--whatsapp-glow);
}

.btn-whatsapp:hover {
    background-color: var(--whatsapp-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--whatsapp-glow);
}

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

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

.pdf-btn {
    padding: 0.55rem 1rem;
    font-size: 0.85rem;
    gap: 0.4rem;
}

/* ==========================================================================
   Header & Navbar
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background: rgba(9, 13, 22, 0.82);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

[data-theme="light"] .header {
    background: rgba(248, 250, 252, 0.88);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo-symbol {
    color: var(--primary);
    font-weight: 900;
}

.logo-text {
    margin: 0 0.2rem;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.75rem;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 0.35rem 0.5rem;
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0.5rem;
    right: 0.5rem;
    height: 2px;
    background-color: var(--primary);
    border-radius: var(--radius-full);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.theme-toggle-btn {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
    border-color: var(--border-hover);
    transform: scale(1.05);
}

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

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.4rem;
    color: var(--text-primary);
    cursor: pointer;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: calc(var(--nav-height) + 2.5rem);
    padding-bottom: 4rem;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3.5rem;
    align-items: center;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.35rem 0.95rem;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--success);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-title {
    font-size: 3.15rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 1.25rem;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 560px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    margin-bottom: 2.25rem;
}

.hero-contact-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border-color);
}

.strip-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.strip-item i {
    color: var(--primary);
}

.strip-item a:hover {
    color: var(--primary);
}

/* Hero Profile Card Visual */
.hero-visual {
    position: relative;
}

.profile-card-wrapper {
    position: relative;
}

.profile-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    backdrop-filter: var(--glass-blur);
    text-align: center;
}

.profile-img-container {
    position: relative;
    width: 170px;
    height: 170px;
    margin: 0 auto 1.5rem;
}

.profile-avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid var(--bg-surface-elevated);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.mascot-badge {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--bg-surface-elevated);
    box-shadow: var(--shadow-md);
    background-color: var(--bg-body);
}

.mascot-badge img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-details h3 {
    font-size: 1.45rem;
    font-weight: 800;
    margin-bottom: 0.25rem;
}

.profile-role {
    color: var(--primary);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
}

.profile-badges {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.engine-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 600;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
}

.hero-metric {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.85rem 1.25rem;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    backdrop-filter: var(--glass-blur);
    animation: float 4s ease-in-out infinite;
    z-index: 2;
}

.metric-1 {
    top: -15px;
    left: -25px;
    animation-delay: 0s;
}

.metric-2 {
    bottom: -15px;
    right: -25px;
    animation-delay: 2s;
}

.metric-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--primary-glow);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.metric-num {
    display: block;
    font-size: 1.05rem;
    font-weight: 800;
    line-height: 1.1;
}

.metric-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-7px); }
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about-content-wrapper {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2.5rem;
    align-items: stretch;
}

.about-story-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.25rem;
    backdrop-filter: var(--glass-blur);
}

.story-header {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    margin-bottom: 1.25rem;
}

.story-icon {
    font-size: 1.5rem;
    color: var(--primary);
}

.about-story-card h3 {
    font-size: 1.35rem;
    font-weight: 700;
}

.about-story-card p {
    color: var(--text-secondary);
    font-size: 0.98rem;
    line-height: 1.7;
    margin-bottom: 1.25rem;
}

.about-quote {
    margin: 1.5rem 0;
    padding: 1rem 1.25rem;
    background: var(--bg-surface-elevated);
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: italic;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.store-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1.75rem;
}

.store-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.65rem 1.25rem;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.store-btn:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
    color: var(--primary);
}

.about-pillars-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
}

.about-pillar {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    backdrop-filter: var(--glass-blur);
    transition: all var(--transition-fast);
}

.about-pillar:hover {
    border-color: var(--border-hover);
    transform: translateX(4px);
}

.pillar-icon {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    background: var(--primary-glow);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
}

.about-pillar h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
}

.about-pillar p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
}

/* ==========================================================================
   Skills Section
   ========================================================================== */
.skills-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.skill-category-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    backdrop-filter: var(--glass-blur);
    transition: all var(--transition-fast);
}

.skill-category-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-3px);
}

.skill-category-card.highlight {
    border-color: rgba(99, 102, 241, 0.3);
}

.cat-header {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.cat-icon {
    font-size: 1.35rem;
    color: var(--primary);
}

.cat-header h3 {
    font-size: 1.2rem;
    font-weight: 700;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
}

.skill-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.45rem 0.85rem;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.skill-tag:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

/* ==========================================================================
   Projects Showcase Section
   ========================================================================== */
.project-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin-bottom: 3rem;
}

.filter-btn {
    padding: 0.55rem 1.25rem;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.filter-btn.active {
    background-color: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    box-shadow: 0 2px 10px var(--primary-glow);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
    backdrop-filter: var(--glass-blur);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg);
}

.project-card.hidden {
    display: none;
}

.project-preview {
    position: relative;
    height: 220px;
    overflow: hidden;
    background: #000000;
}

.project-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.project-card:hover .project-thumb {
    transform: scale(1.06);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: rgba(9, 13, 22, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    opacity: 0;
    transition: opacity var(--transition-fast);
    backdrop-filter: blur(3px);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.preview-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--primary);
    color: #ffffff;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.preview-btn:hover {
    transform: scale(1.15);
    background-color: var(--primary-hover);
}

.project-info {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.project-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
}

.project-description {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.project-features {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-bottom: 1.25rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.project-features span i {
    color: var(--success);
    margin-right: 0.35rem;
}

.project-links-row {
    margin-bottom: 1.25rem;
}

.project-store-link {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.45rem 0.85rem;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.project-store-link:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin-top: auto;
}

.project-tech span {
    font-size: 0.75rem;
    padding: 0.25rem 0.6rem;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
}

/* Other Projects Mini Box */
.other-projects-box {
    margin-top: 3.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    backdrop-filter: var(--glass-blur);
}

.other-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--text-primary);
}

.other-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.mini-project-card {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: transform var(--transition-fast);
    display: flex;
    flex-direction: column;
}

.mini-project-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
}

.mini-project-card img {
    width: 100%;
    height: 140px;
    object-fit: cover;
}

.mini-info {
    padding: 1.15rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.mini-info h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
}

.mini-info p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.85rem;
    flex-grow: 1;
}

.mini-store-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary);
    margin-top: auto;
}

.mini-store-link:hover {
    text-decoration: underline;
}

/* ==========================================================================
   Blueprint Architecture Section
   ========================================================================== */
.blueprint-showcase {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2.5rem;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.25rem;
    backdrop-filter: var(--glass-blur);
}

.blueprint-img-box {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    border: 1px solid var(--border-color);
}

.blueprint-main-img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.blueprint-img-box:hover .blueprint-main-img {
    transform: scale(1.04);
}

.blueprint-overlay {
    position: absolute;
    inset: 0;
    background: rgba(9, 13, 22, 0.65);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    opacity: 0;
    transition: opacity var(--transition-fast);
    color: #ffffff;
    font-weight: 600;
    font-size: 0.95rem;
}

.blueprint-img-box:hover .blueprint-overlay {
    opacity: 1;
}

.blueprint-overlay i {
    font-size: 2rem;
}

.blueprint-points {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.bp-point {
    display: flex;
    gap: 1rem;
}

.bp-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--primary-glow);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    flex-shrink: 0;
}

.bp-point h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
}

.bp-point p {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    gap: 3rem;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    backdrop-filter: var(--glass-blur);
    transition: all var(--transition-fast);
}

.contact-card:hover {
    border-color: var(--border-hover);
    transform: translateX(4px);
}

.contact-card.highlight-wa {
    border-color: rgba(37, 211, 102, 0.3);
}

.contact-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: var(--primary-glow);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-icon.wa-icon {
    background: var(--whatsapp-glow);
    color: var(--whatsapp);
}

.contact-card h4 {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 600;
}

.contact-card span {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.25rem;
    backdrop-filter: var(--glass-blur);
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.85rem 1rem;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: all var(--transition-fast);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-submit-btn {
    width: 100%;
    padding: 0.95rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    padding-top: 4rem;
    margin-top: 4rem;
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    padding-bottom: 3rem;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.85rem;
    max-width: 320px;
}

.footer-contact-links {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.footer-contact-links a:hover {
    color: var(--primary);
}

.footer-links h4,
.footer-social h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--primary);
}

.social-icons {
    display: flex;
    gap: 0.75rem;
}

.social-icons a {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.social-icons a:hover {
    color: var(--primary);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: 1.5rem 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-bottom a {
    color: var(--primary);
}

/* ==========================================================================
   Image Lightbox Modal
   ========================================================================== */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    padding: 2rem;
}

.lightbox.show {
    opacity: 1;
    visibility: visible;
}

.lightbox-close {
    position: absolute;
    top: 1.5rem;
    right: 2rem;
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

.lightbox-content {
    max-width: 90vw;
    max-height: 85vh;
    text-align: center;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 75vh;
    border-radius: var(--radius-md);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.8);
    object-fit: contain;
}

.lightbox-content h4 {
    margin-top: 1rem;
    color: #ffffff;
    font-size: 1.1rem;
    font-weight: 600;
}

/* ==========================================================================
   Back to Top & Toast Alert
   ========================================================================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--primary);
    color: #ffffff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 14px var(--primary-glow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-fast);
    z-index: 990;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: var(--primary-hover);
    transform: translateY(-3px);
}

.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    color: var(--text-primary);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 2000;
}

.toast.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.toast-icon {
    font-size: 1.5rem;
    color: var(--success);
}

.toast-content {
    display: flex;
    flex-direction: column;
}

.toast-content strong {
    font-size: 0.95rem;
}

.toast-content span {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   Responsive Media Queries
   ========================================================================== */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3.5rem;
    }

    .hero-visual {
        max-width: 480px;
        margin: 0 auto;
    }

    .about-content-wrapper {
        grid-template-columns: 1fr;
    }

    .blueprint-showcase {
        grid-template-columns: 1fr;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .footer-container {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        background: var(--bg-surface);
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        transform: translateY(-150%);
        transition: transform var(--transition-normal);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.open {
        transform: translateY(0);
    }

    .nav-list {
        flex-direction: column;
        width: 100%;
        text-align: center;
        gap: 1rem;
    }

    .nav-actions {
        width: 100%;
        justify-content: center;
    }

    .hero-title {
        font-size: 2.35rem;
    }

    .section-title {
        font-size: 1.85rem;
    }

    .footer-container {
        grid-template-columns: 1fr;
    }

    .metric-1, .metric-2 {
        position: static;
        margin: 0.75rem auto 0;
    }
}