/* ==========================================================================
   EASY COLOR & THEME CUSTOMIZATION
   ========================================================================== */
:root {
    /* Brand Core Palette (Masculine, Tech, High-Contrast) */
    --primary-color: #0B0D10;
    --secondary-color: #161A20;
    --accent-color: #3B82F6;       /* Electric Blue */
    --accent-glow: rgba(59, 130, 246, 0.18);
    --accent-hover: #2563EB;

    /* Surfaces & Layout Elements */
    --background-color: #080A0D;   /* Near-black */
    --surface-color: #11151A;      /* Dark Charcoal Surface */
    --surface-elevated: #1A2028;

    /* Typography Colors */
    --heading-color: #FFFFFF;
    --text-color: #B7BEC8;         /* Cool light gray */
    --muted-color: #737C88;        /* Technical gray */

    /* Gridlines & Borders */
    --border-color: #252B33;
    --border-light: #333B46;

    /* Font Families */
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Layout Spacing */
    --header-height: 80px;
    --container-max-width: 1280px;

    /* Transitions & FX */
    --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    --box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--background-color);
    color: var(--text-color);
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.modal-open,
body.menu-open {
    overflow: hidden;
}

/* Typography Defaults */
h1, h2, h3, h4, h5, h6 {
    color: var(--heading-color);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

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

ul {
    list-style: none;
}

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

button, input, textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    background: none;
    border: none;
    outline: none;
}

button {
    cursor: pointer;
}

/* Accent Dot */
.accent-dot {
    color: var(--accent-color);
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Section Common Layout */
.section {
    padding: 120px 0;
    position: relative;
    border-bottom: 1px solid var(--border-color);
}

.section-header {
    margin-bottom: 64px;
}

.section-header__tag {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-color);
    letter-spacing: 0.15em;
    display: block;
    margin-bottom: 12px;
    text-transform: uppercase;
}

.section-header__title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    text-transform: uppercase;
    letter-spacing: -0.03em;
}

/* ==========================================================================
   BUTTONS & UI CONTROLS
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border-radius: 2px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn--primary {
    background-color: var(--accent-color);
    color: #FFFFFF;
    border: 1px solid var(--accent-color);
}

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

.btn--secondary {
    background-color: var(--surface-color);
    color: var(--heading-color);
    border: 1px solid var(--border-color);
}

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

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

.btn--outline:hover {
    border-color: var(--heading-color);
    background-color: rgba(255, 255, 255, 0.05);
}

.btn--sm {
    padding: 8px 16px;
    font-size: 0.775rem;
}

.btn--full {
    width: 100%;
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
    border-bottom: 1px solid transparent;
}

.header.scrolled {
    background-color: rgba(8, 10, 13, 0.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom-color: var(--border-color);
}

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

/* Brand Logo */
.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand__logo {
    font-family: var(--font-mono);
    font-weight: 800;
    font-size: 1rem;
    background-color: var(--surface-color);
    color: var(--accent-color);
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: 2px;
}

.brand__text {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.08em;
    color: var(--heading-color);
}

/* Navigation Links */
.nav__list {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav__link {
    font-family: var(--font-mono);
    font-size: 0.825rem;
    text-transform: uppercase;
    color: var(--text-color);
    letter-spacing: 0.05em;
    position: relative;
    padding: 4px 0;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--accent-color);
    transition: width var(--transition-normal);
}

.nav__link:hover,
.nav__link.active {
    color: var(--heading-color);
}

.nav__link.active::after,
.nav__link:hover::after {
    width: 100%;
}

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

/* Mobile Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 18px;
    z-index: 1001;
}

.nav-toggle__bar {
    width: 100%;
    height: 2px;
    background-color: var(--heading-color);
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.nav-toggle.open .nav-toggle__bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.nav-toggle.open .nav-toggle__bar:nth-child(2) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
    min-height: 100vh;
    padding-top: calc(var(--header-height) + 60px);
    padding-bottom: 80px;
    display: flex;
    align-items: center;
    position: relative;
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
}

.hero__grid-bg {
    position: absolute;
    inset: 0;
    background-size: 40px 40px;
    background-image: 
        linear-gradient(to right, rgba(37, 43, 51, 0.3) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(37, 43, 51, 0.3) 1px, transparent 1px);
    mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
    pointer-events: none;
}

.hero__container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 6px 14px;
    background-color: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 100px;
    margin-bottom: 24px;
}

.status-badge__dot {
    width: 8px;
    height: 8px;
    background-color: #10B981; /* Green active status */
    border-radius: 50%;
    box-shadow: 0 0 8px #10B981;
}

.status-badge__text {
    font-family: var(--font-mono);
    font-size: 0.775rem;
    color: var(--heading-color);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.hero__title {
    font-size: clamp(3rem, 6vw, 5.25rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.02;
    margin-bottom: 16px;
}

.hero__subtitle {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    color: var(--heading-color);
    font-weight: 500;
    margin-bottom: 24px;
}

.text-divider {
    color: var(--accent-color);
}

.hero__description {
    font-size: 1.125rem;
    color: var(--text-color);
    max-width: 620px;
    margin-bottom: 36px;
}

.hero__meta-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    padding: 20px;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    margin-bottom: 36px;
}

.meta-item__label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--muted-color);
    letter-spacing: 0.1em;
    margin-bottom: 4px;
}

.meta-item__value {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--heading-color);
    font-weight: 600;
}

.hero__cta-group {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 36px;
}

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

.social-icon-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

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

/* Hero Portrait Card */
.portrait-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    padding: 16px;
    position: relative;
}

.portrait-card__frame {
    aspect-ratio: 4 / 5;
    width: 100%;
    background-color: var(--secondary-color);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.portrait-card__placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--muted-color);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    letter-spacing: 0.1em;
}

.portrait-card__tech-spec {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 0.725rem;
}

.spec-key {
    color: var(--muted-color);
}

.spec-val {
    color: var(--accent-color);
    font-weight: 600;
}

.scroll-indicator {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--muted-color);
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.scroll-indicator:hover {
    opacity: 1;
    color: var(--accent-color);
}

.scroll-indicator__text {
    font-family: var(--font-mono);
    font-size: 0.675rem;
    letter-spacing: 0.2em;
}

.scroll-indicator__line {
    width: 1px;
    height: 24px;
    background-color: currentColor;
    animation: scrollPulse 2s infinite;
}

@keyframes scrollPulse {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    50.1% { transform: scaleY(1); transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ==========================================================================
   ABOUT SECTION
   ========================================================================== */
.about__grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: start;
}

.about__lead {
    font-size: clamp(1.35rem, 2.5vw, 1.85rem);
    color: var(--heading-color);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 24px;
}

.about__text p {
    margin-bottom: 18px;
    font-size: 1.05rem;
    color: var(--text-color);
}

.about__actions {
    display: flex;
    gap: 16px;
    margin-top: 36px;
}

.about__stats-panel {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.stat-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    padding: 28px 20px;
    transition: border-color var(--transition-fast);
}

.stat-card:hover {
    border-color: var(--accent-color);
}

.stat-card__number {
    font-family: var(--font-mono);
    font-size: clamp(2.25rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--heading-color);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-card__label {
    font-size: 0.85rem;
    color: var(--muted-color);
    font-family: var(--font-mono);
    text-transform: uppercase;
}

/* ==========================================================================
   SKILLS SECTION
   ========================================================================== */
.skills__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.skill-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    padding: 28px;
    transition: all var(--transition-normal);
    position: relative;
}

.skill-card:hover {
    border-color: var(--accent-color);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.skill-card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.skill-card__category {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-color);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.skill-card__icon {
    width: 36px;
    height: 36px;
    color: var(--heading-color);
}

.skill-card__title {
    font-size: 1.25rem;
    margin-bottom: 10px;
}

.skill-card__desc {
    font-size: 0.9rem;
    color: var(--muted-color);
    margin-bottom: 20px;
}

.skill-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tech-tag {
    font-family: var(--font-mono);
    font-size: 0.725rem;
    padding: 4px 10px;
    background-color: var(--secondary-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    border-radius: 2px;
}

/* ==========================================================================
   SERVICES SECTION
   ========================================================================== */
.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 24px;
}

.service-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    padding: 36px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all var(--transition-normal);
    position: relative;
}

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

.service-card__number {
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.1);
    position: absolute;
    top: 24px;
    right: 28px;
}

.service-card:hover .service-card__number {
    color: var(--accent-color);
}

.service-card__title {
    font-size: 1.35rem;
    margin-top: 24px;
    margin-bottom: 14px;
}

.service-card__desc {
    font-size: 0.95rem;
    color: var(--text-color);
    margin-bottom: 24px;
}

.service-card__features {
    margin-bottom: 32px;
}

.service-card__feature-item {
    font-size: 0.85rem;
    color: var(--muted-color);
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
    font-family: var(--font-mono);
}

.service-card__feature-item::before {
    content: '—';
    color: var(--accent-color);
}

.service-card__cta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--heading-color);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.service-card:hover .service-card__cta {
    color: var(--accent-color);
}

/* ==========================================================================
   EXPERIENCE & EDUCATION TIMELINE
   ========================================================================== */
.timeline-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.timeline-column__title {
    font-size: 1.5rem;
    margin-bottom: 32px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.timeline {
    position: relative;
    padding-left: 24px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    bottom: 8px;
    width: 1px;
    background-color: var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -28px;
    top: 6px;
    width: 9px;
    height: 9px;
    background-color: var(--background-color);
    border: 2px solid var(--accent-color);
    border-radius: 50%;
}

.timeline-item__period {
    font-family: var(--font-mono);
    font-size: 0.775rem;
    color: var(--accent-color);
    letter-spacing: 0.05em;
    margin-bottom: 6px;
}

.timeline-item__role {
    font-size: 1.2rem;
    margin-bottom: 4px;
}

.timeline-item__company {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--muted-color);
    margin-bottom: 12px;
}

.timeline-item__desc {
    font-size: 0.95rem;
    color: var(--text-color);
    margin-bottom: 14px;
}

/* ==========================================================================
   PROJECTS & FILTER SYSTEM
   ========================================================================== */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 48px;
}

.filter-btn {
    font-family: var(--font-mono);
    font-size: 0.775rem;
    padding: 8px 18px;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    letter-spacing: 0.05em;
    transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: #FFFFFF;
}

.projects__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 32px;
}

.project-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

.project-card__image-wrapper {
    aspect-ratio: 16 / 10;
    width: 100%;
    background-color: var(--secondary-color);
    position: relative;
    overflow: hidden;
}

.project-card__image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--secondary-color), var(--surface-elevated));
    color: var(--muted-color);
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.project-card__content {
    padding: 24px;
}

.project-card__meta {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-color);
    margin-bottom: 8px;
}

.project-card__title {
    font-size: 1.25rem;
    margin-bottom: 10px;
}

.project-card__desc {
    font-size: 0.9rem;
    color: var(--text-color);
    margin-bottom: 20px;
}

.project-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    font-family: var(--font-mono);
    font-size: 0.775rem;
    color: var(--heading-color);
}

.project-card__arrow {
    transition: transform var(--transition-fast);
}

.project-card:hover .project-card__arrow {
    transform: translateX(4px);
    color: var(--accent-color);
}

/* ==========================================================================
   TESTIMONIALS SLIDER
   ========================================================================== */
.slider {
    position: relative;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    padding: 48px;
    overflow: hidden;
}

.slider__track {
    display: flex;
    transition: transform var(--transition-normal);
}

.testimonial-slide {
    min-width: 100%;
    box-sizing: border-box;
}

.testimonial__quote {
    font-size: clamp(1.15rem, 2vw, 1.45rem);
    color: var(--heading-color);
    line-height: 1.5;
    margin-bottom: 32px;
    font-style: italic;
}

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

.testimonial__avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--accent-color);
}

.testimonial__name {
    font-size: 1.1rem;
    color: var(--heading-color);
}

.testimonial__role {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--muted-color);
}

.slider__controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.slider__btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--secondary-color);
    border: 1px solid var(--border-color);
    color: var(--heading-color);
    transition: all var(--transition-fast);
}

.slider__btn:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.slider__dots {
    display: flex;
    gap: 8px;
}

.dot {
    width: 8px;
    height: 8px;
    background-color: var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.dot.active {
    background-color: var(--accent-color);
}

/* ==========================================================================
   CONTACT SECTION & FORM
   ========================================================================== */
.contact__grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 60px;
}

.contact__subtitle {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.contact__text {
    font-size: 1rem;
    color: var(--text-color);
    margin-bottom: 36px;
}

.contact__details {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 36px;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    transition: border-color var(--transition-fast);
}

.contact-card:hover {
    border-color: var(--accent-color);
}

.contact-card__icon {
    color: var(--accent-color);
}

.contact-card__label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--muted-color);
    letter-spacing: 0.08em;
}

.contact-card__value {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--heading-color);
    font-weight: 600;
}

.contact__form {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    padding: 36px;
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--heading-color);
    letter-spacing: 0.08em;
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    color: var(--heading-color);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: border-color var(--transition-fast);
    border-radius: 2px;
}

.form-input:focus {
    border-color: var(--accent-color);
}

.form-textarea {
    resize: vertical;
}

.form-error {
    display: none;
    font-family: var(--font-mono);
    font-size: 0.725rem;
    color: #EF4444; /* Error red */
    margin-top: 6px;
}

.form-group.invalid .form-input {
    border-color: #EF4444;
}

.form-group.invalid .form-error {
    display: block;
}

.form-status {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    margin-bottom: 20px;
    padding: 12px;
    display: none;
}

.form-status.success {
    display: block;
    background-color: rgba(16, 185, 129, 0.1);
    border: 1px solid #10B981;
    color: #10B981;
}

.form-status.error {
    display: block;
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid #EF4444;
    color: #EF4444;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
    background-color: var(--primary-color);
    border-top: 1px solid var(--border-color);
    padding-top: 80px;
}

.footer__container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: 60px;
}

.footer__tagline {
    margin-top: 12px;
    font-size: 0.9rem;
    color: var(--muted-color);
    max-width: 320px;
}

.footer__links {
    display: flex;
    gap: 24px;
}

.footer__links a {
    font-family: var(--font-mono);
    font-size: 0.825rem;
    color: var(--text-color);
    text-transform: uppercase;
}

.footer__links a:hover {
    color: var(--accent-color);
}

.back-to-top {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.775rem;
    color: var(--heading-color);
    padding: 10px 16px;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.back-to-top:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.footer__bottom {
    border-top: 1px solid var(--border-color);
    padding: 24px 0;
    background-color: var(--background-color);
}

.footer__bottom-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--muted-color);
}

/* ==========================================================================
   MODAL DIALOG
   ========================================================================== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    visibility: hidden;
    opacity: 0;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.modal.active {
    visibility: visible;
    opacity: 1;
}

.modal__overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
}

.modal__container {
    position: relative;
    width: 100%;
    max-width: 900px;
    max-height: 90vh;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    overflow-y: auto;
    z-index: 10;
    box-shadow: var(--box-shadow);
}

.modal__close {
    position: absolute;
    top: 20px;
    right: 24px;
    font-size: 2rem;
    color: var(--heading-color);
    line-height: 1;
    z-index: 20;
    transition: color var(--transition-fast);
}

.modal__close:hover {
    color: var(--accent-color);
}

.modal__body {
    padding: 40px;
}

.modal__hero-img {
    width: 100%;
    aspect-ratio: 16 / 9;
    background-color: var(--secondary-color);
    border: 1px solid var(--border-color);
    margin-bottom: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    color: var(--muted-color);
}

.modal__title {
    font-size: 2rem;
    margin-bottom: 12px;
}

.modal__meta-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    padding: 16px;
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    margin-bottom: 28px;
}

.modal__section-title {
    font-size: 1.15rem;
    margin-top: 24px;
    margin-bottom: 12px;
    color: var(--heading-color);
}

.modal__text {
    font-size: 0.95rem;
    color: var(--text-color);
    margin-bottom: 16px;
}

/* ==========================================================================
   WHATSAPP WIDGET
   ========================================================================== */
.whatsapp-widget {
    position: fixed;
    bottom: 32px;
    right: 32px;
    z-index: 990;
}

.whatsapp-btn {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background-color: #25D366;
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
    transition: transform var(--transition-fast);
    position: relative;
}

.whatsapp-btn:hover {
    transform: scale(1.08);
}

.whatsapp-tooltip {
    position: absolute;
    right: 64px;
    top: 50%;
    transform: translateY(-50%);
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    color: var(--heading-color);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 6px 12px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
}

.whatsapp-btn:hover .whatsapp-tooltip {
    opacity: 1;
}

/* ==========================================================================
   REVEAL ANIMATIONS
   ========================================================================== */
[data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Reduced Motion Compliance */
@media (prefers-reduced-motion: reduce) {
    [data-reveal] {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .scroll-indicator__line {
        animation: none;
    }
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS
   ========================================================================== */
@media (max-width: 1024px) {
    .hero__container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about__grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .timeline-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact__grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    .section {
        padding: 80px 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav {
        position: fixed;
        inset: 0;
        background-color: var(--background-color);
        z-index: 999;
        display: flex;
        align-items: center;
        justify-content: center;
        transform: translateX(100%);
        transition: transform var(--transition-normal);
    }

    .nav.open {
        transform: translateX(0);
    }

    .nav__list {
        flex-direction: column;
        gap: 28px;
        text-align: center;
    }

    .nav__link {
        font-size: 1.25rem;
    }

    .hero__meta-grid {
        grid-template-columns: 1fr;
    }

    .about__stats-panel {
        grid-template-columns: 1fr;
    }

    .footer__container {
        flex-direction: column;
        gap: 32px;
    }

    .footer__bottom-container {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

@media (max-width: 425px) {
    .hero__cta-group {
        flex-direction: column;
        align-items: stretch;
    }

    .about__actions {
        flex-direction: column;
    }

    .slider {
        padding: 24px;
    }
}