/* ==========================================================================
   RESET & VARIABLES
   ========================================================================== */
:root {
    --color-bg: #FAFAFA;
    --color-surface: #FFFFFF;
    --color-text-main: #0F172A;
    --color-text-muted: #475569;
    --color-border: #E2E8F0;

    --color-primary: #0F172A;
    --color-primary-hover: #1E293B;
    --color-accent: #0284C7;

    --font-main: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;

    --container-width: 1140px;
    --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    background-color: var(--color-bg);
    color: var(--color-text-main);
    font-family: var(--font-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

ul {
    list-style: none;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ==========================================================================
   LAYOUT & TYPOGRAPHY
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 5rem 0;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.center {
    text-align: center;
}

h1,
h2,
h3 {
    letter-spacing: -0.02em;
    font-weight: 700;
    line-height: 1.25;
}

h1 {
    font-size: clamp(2.2rem, 4vw, 3.5rem);
    margin-bottom: 1.25rem;
}

h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

p {
    color: var(--color-text-muted);
}

.section-header {
    margin-bottom: 3rem;
}

.section-description {
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================================================
   BUTTONS & BADGES
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    cursor: pointer;
    text-align: center;
}

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

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

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

.btn-secondary:hover {
    background-color: #F1F5F9;
    border-color: #CBD5E1;
}

.btn-tertiary {
    color: var(--color-text-main);
    padding: 0.875rem 1rem;
}

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

.badge {
    display: inline-block;
    padding: 0.35rem 0.85rem;
    background-color: #E0F2FE;
    color: #0369A1;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 1.5rem;
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.header {
    position: sticky;
    top: 0;
    background-color: rgba(250, 250, 250, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
}

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

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

.brand-name {
    font-weight: 700;
    font-size: 1.125rem;
}

.brand-role {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.nav-list {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: var(--transition);
}

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

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text-main);
    position: relative;
    transition: var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--color-text-main);
    transition: var(--transition);
}

.hamburger::before {
    top: -6px;
}

.hamburger::after {
    top: 6px;
}

/* ==========================================================================
   HERO & SECTIONS
   ========================================================================== */
.hero {
    padding: 6rem 0 4rem;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

/* Philosophy */
.philosophy {
    background-color: var(--color-surface);
    border-y: 1px solid var(--color-border);
}

.philosophy-content p {
    margin-bottom: 1rem;
    font-size: 1.05rem;
}

/* Projects */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

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

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.05);
}

.project-image {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background-color: #E2E8F0;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-tag {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(15, 23, 42, 0.85);
    color: #FFF;
    font-size: 0.75rem;
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    backdrop-filter: blur(4px);
}

.project-info {
    padding: 1.5rem;
}

.projects-cta-box {
    background-color: #F8FAFC;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 3rem 2rem;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.projects-cta-box h3 {
    margin-bottom: 0.75rem;
}

.projects-cta-box p {
    margin-bottom: 1.5rem;
}

/* Process */
.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.step {
    background-color: var(--color-surface);
    padding: 1.75rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.step-num {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
    display: block;
}

/* Features */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 2rem;
    border-radius: var(--radius-md);
}

/* Target Audience */
.audience-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.audience-list li {
    background-color: var(--color-surface);
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    font-weight: 500;
}

/* Mid CTA & Final CTA */
.mid-cta,
.final-cta {
    background-color: var(--color-surface);
    border-y: 1px solid var(--color-border);
}

.mid-cta p,
.final-cta p {
    margin-bottom: 2rem;
}

.final-cta-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* About */
.about-image-wrapper img {
    border-radius: var(--radius-md);
    object-fit: cover;
    aspect-ratio: 4/5;
}

.about-content p {
    margin-bottom: 1rem;
}

/* FAQ Accordion */
.accordion {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.accordion-item {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    padding: 1.25rem;
    text-align: left;
    background: none;
    border: none;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-text-main);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-family: inherit;
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 1.25rem;
}

.accordion-item.active .accordion-content {
    padding: 0 1.25rem 1.25rem 1.25rem;
}

.accordion-item.active .icon {
    transform: rotate(45deg);
}

.icon {
    transition: transform 0.2s ease;
    font-size: 1.2rem;
}

/* FOOTER */
.footer {
    background-color: var(--color-primary);
    color: #F8FAFC;
    padding: 4rem 0 2rem;
}

.footer-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.footer-info p {
    color: #94A3B8;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: #F8FAFC;
    font-size: 0.9rem;
}

.footer-copy p {
    color: #64748B;
    font-size: 0.8rem;
    border-top: 1px solid #1E293B;
    padding-top: 2rem;
}

/* ==========================================================================
   RESPONSIVE DESIGN & ACCESSIBILITY
   ========================================================================== */
@media (max-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .menu-toggle {
        display: block;
    }

    .nav-cta {
        display: none;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--color-surface);
        border-bottom: 1px solid var(--color-border);
        padding: 1.5rem;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

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

    .nav-list {
        flex-direction: column;
        gap: 1rem;
    }

    .hero-actions,
    .final-cta-actions {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
    }
}