/* ===== VARIABLES ===== */
:root {
    --bg-primary: #101630;
    --bg-secondary: #171f43;
    --bg-tertiary: #1e295b;
    --text-primary: #ffffff;
    --text-secondary: #dddddd;
    --text-muted: #aaaaaa;
    --accent-purple: #b9a3cc;
    --accent-cyan: #49bada;
    --border-color: #2a3566;
    --radius: 0.75rem;
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Poppins", sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

/* ===== UTILITIES ===== */
.header-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    font-family: inherit;
}

.btn-primary {
    background-color: var(--accent-purple);
    color: var(--bg-primary);
}

.btn-primary:hover {
    background-color: #a890bb;
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    border-color: var(--accent-purple);
    color: var(--accent-purple);
}

.btn-accent {
    background-color: var(--accent-cyan);
    color: var(--bg-primary);
}

.btn-accent:hover {
    background-color: #3aa8c7;
    transform: translateY(-2px);
}

.btn-disabled {
    background-color: var(--bg-tertiary);
    color: var(--text-muted);
    cursor: not-allowed;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: rgba(16, 22, 48, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition);
}

.header.scrolled {
    background-color: rgba(16, 22, 48, 0.95);
    border-bottom-color: var(--border-color);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    font-family: "Bebas Neue", sans-serif;
    font-size: 2rem;
    letter-spacing: 0.1em;
    color: var(--accent-purple);
}

.desktop-nav {
    display: none;
    gap: 2rem;
}

.desktop-nav a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.desktop-nav a:hover {
    color: var(--accent-purple);
}

.desktop-only {
    display: none;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 30px;
    height: 30px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 101;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    transition: all var(--transition);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation */
.mobile-nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    border-bottom: 1px solid var(--border-color);
}

.mobile-nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.mobile-nav a {
    padding: 0.75rem 0;
    font-weight: 500;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.mobile-nav a:last-child {
    border-bottom: none;
    margin-top: 0.5rem;
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem 0 4rem;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(185, 163, 204, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(73, 186, 218, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    text-align: center;
    max-width: 800px;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent-purple);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-family: "Bebas Neue", sans-serif;
    font-size: clamp(2.5rem, 8vw, 5rem);
    line-height: 1.1;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
}

.hero-title .highlight {
    color: var(--accent-purple);
}

.hero-description {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

/* ===== ABOUT SECTION ===== */
.about {
    padding: 5rem 0;
    background-color: var(--bg-secondary);
}

.about-wrapper {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    align-items: center;
}

.about-image {
    flex-shrink: 0;
}

.about-image-placeholder {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-primary));
    border: 2px solid var(--border-color);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-purple);
}

.about-image-placeholder img {
    width: 330px;
    height: 330px;
    border-radius: 1rem;
}

.about-content {
    text-align: center;
}

.about-text {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    max-width: 600px;
}

/* ===== SECTION COMMON ===== */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 3rem;
}

.section-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.section-title {
    font-family: "Bebas Neue", sans-serif;
    font-size: clamp(2rem, 5vw, 3rem);
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.section-description {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ===== PROJECTS SECTION ===== */
.projects {
    padding: 5rem 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.project-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all var(--transition);
}

.project-card:hover {
    border-color: var(--accent-purple);
    transform: translateY(-5px);
}

.project-image {
    width: 100%;
    height: 200px;
    background-color: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-image-placeholder {
    color: var(--accent-purple);
    opacity: 0.5;
}

.project-content {
    padding: 1.5rem;
}

.project-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--bg-tertiary);
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-purple);
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}

.project-tag-soon {
    color: var(--text-muted);
}

.project-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.project-content p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.project-card-soon {
    opacity: 0.7;
}

.project-card-soon:hover {
    transform: none;
    border-color: var(--border-color);
}

/* ===== CTA SECTION ===== */
.cta {
    position: relative;
    padding: 5rem 0;
    overflow: hidden;
    background-color: var(--bg-secondary);
}

.cta-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(185, 163, 204, 0.2) 0%, transparent 60%);
    pointer-events: none;
}

.cta-content {
    position: relative;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-family: "Bebas Neue", sans-serif;
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.cta-description {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

/* ===== FOOTER ===== */
.footer {
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding-top: 3rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    padding-bottom: 2rem;
    text-align: center;
}

.footer-brand .logo {
    display: inline-block;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-tagline {
    margin-top: 0.5rem;
    color: var(--text-muted) !important;
    font-size: 0.8rem !important;
}

.footer-links h4 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-links a {
    display: block;
    padding: 0.5rem 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

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

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

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* ===== RESPONSIVE - TABLET (640px) ===== */
@media (min-width: 640px) {
    .hero-buttons {
        flex-direction: row;
        justify-content: center;
    }

    .about-wrapper {
        flex-direction: row;
        text-align: left;
    }

    .about-content {
        text-align: left;
    }

    .about-image-placeholder {
        width: 280px;
        height: 280px;
    }

    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: 2fr 1fr 1fr;
        text-align: left;
    }
}

/* ===== RESPONSIVE - DESKTOP (1024px) ===== */
@media (min-width: 1024px) {
    .desktop-nav {
        display: flex;
    }

    .desktop-only {
        display: inline-flex;
    }

    .mobile-menu-btn {
        display: none;
    }

    .mobile-nav {
        display: none !important;
    }

    .hero {
        padding: 8rem 0;
    }

    .hero-description {
        font-size: 1.125rem;
    }

    .about,
    .projects,
    .cta {
        padding: 6rem 0;
    }

    .about-image-placeholder {
        width: 350px;
        height: 350px;
    }

    .about-text {
        font-size: 1.125rem;
    }
}