/* ========================================
   PDC CONSULT — Clean & Minimal
   ======================================== */

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

:root {
    --navy: #1B2A4A;
    --navy-light: #2C3E5A;
    --blue: #3B82F6;
    --blue-light: #60A5FA;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    --white: #FFFFFF;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    --space-3xl: 8rem;
    --radius: 8px;
    --transition: 0.25s ease;
}

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

body {
    font-family: var(--font);
    background: var(--white);
    color: var(--gray-800);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 clamp(1.5rem, 4vw, 3rem);
}

.section-label {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--blue);
    margin-bottom: var(--space-sm);
}

.section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    font-weight: 700;
    color: var(--navy);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.section-header {
    margin-bottom: var(--space-xl);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.75rem;
    font-family: var(--font);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn--primary {
    background: var(--navy);
    color: var(--white);
}

.btn--primary:hover {
    background: var(--navy-light);
}

.btn--ghost {
    background: transparent;
    color: var(--navy);
    border: 1.5px solid var(--gray-200);
}

.btn--ghost:hover {
    border-color: var(--navy);
}

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.25rem 0;
    transition: var(--transition);
}

.nav--scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    padding: 0.75rem 0;
    box-shadow: 0 1px 0 var(--gray-200);
}

.nav__inner {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 clamp(1.5rem, 4vw, 3rem);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--navy);
    letter-spacing: -0.02em;
}

.nav__logo span {
    font-weight: 400;
    color: var(--gray-400);
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 101;
}

.nav__toggle span {
    width: 22px;
    height: 1.5px;
    background: var(--navy);
    transition: var(--transition);
    border-radius: 2px;
}

.nav__toggle.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__toggle.active span:nth-child(2) { opacity: 0; }
.nav__toggle.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav__menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav__link {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--gray-500);
    transition: var(--transition);
}

.nav__link:hover { color: var(--navy); }

.nav__link--cta {
    background: var(--navy);
    color: var(--white) !important;
    padding: 0.5rem 1.1rem;
    border-radius: var(--radius);
}

.nav__link--cta:hover { background: var(--navy-light); }

/* --- Hero --- */
.hero {
    padding: 10rem 0 5rem;
    min-height: 85vh;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--space-xl);
    align-items: center;
}

.hero__tag {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--blue);
    margin-bottom: var(--space-md);
}

.hero__title {
    font-size: clamp(2.5rem, 5.5vw, 4rem);
    font-weight: 700;
    color: var(--navy);
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-md);
}

.hero__accent {
    color: var(--gray-300);
    font-weight: 300;
}

.hero__sub {
    font-size: 1.05rem;
    color: var(--gray-500);
    max-width: 520px;
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.hero__cta {
    display: flex;
    gap: var(--space-sm);
}

.hero__visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
}

.hero__line {
    width: 1px;
    height: 120px;
    background: linear-gradient(to bottom, var(--gray-200), var(--blue));
}

.hero__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--blue);
}

/* --- Services --- */
.services {
    padding: var(--space-3xl) 0;
    background: var(--gray-50);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.service-card {
    padding: var(--space-lg);
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--blue);
    box-shadow: 0 4px 24px rgba(59, 130, 246, 0.08);
}

.service-card__num {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--blue);
    margin-bottom: var(--space-md);
    letter-spacing: 0.1em;
}

.service-card__title {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: var(--space-sm);
}

.service-card__text {
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.7;
}

/* --- Sectors --- */
.sectors {
    padding: var(--space-3xl) 0;
}

.sectors__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: start;
}

.sectors__intro {
    font-size: 1.05rem;
    color: var(--gray-500);
    line-height: 1.7;
    margin-top: var(--space-sm);
}

.sector-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--gray-200);
}

.sector-item:first-child { padding-top: 0; }
.sector-item:last-child { border-bottom: none; }

.sector-item__marker {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--blue);
    flex-shrink: 0;
    margin-top: 0.5rem;
}

.sector-item__title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: 0.3rem;
}

.sector-item__text {
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.6;
}

/* --- About --- */
.about {
    padding: var(--space-3xl) 0;
    background: var(--gray-50);
}

.about__grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-xl);
}

.about__text {
    font-size: 1rem;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: var(--space-sm);
}

.about__details {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--gray-200);
}

.detail-block__label {
    display: block;
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gray-400);
    margin-bottom: 0.3rem;
}

.detail-block__value {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--navy);
}

/* --- Contact --- */
.contact {
    padding: var(--space-3xl) 0;
}

.contact__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: start;
}

.contact__intro {
    font-size: 1.05rem;
    color: var(--gray-500);
    line-height: 1.7;
    margin: var(--space-sm) 0 var(--space-lg);
}

.contact__email {
    display: inline-block;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--blue);
    transition: var(--transition);
}

.contact__email:hover { color: var(--navy); }

.form__row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
}

.form__group {
    margin-bottom: var(--space-md);
}

.form__group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--gray-500);
    margin-bottom: 0.4rem;
}

.form__group input,
.form__group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font);
    font-size: 0.9rem;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius);
    background: var(--white);
    color: var(--gray-800);
    transition: var(--transition);
    outline: none;
}

.form__group input:focus,
.form__group textarea:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form__group textarea { resize: vertical; }

/* --- Footer --- */
.footer {
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--gray-200);
}

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

.footer__logo {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--navy);
}

.footer__logo span {
    font-weight: 400;
    color: var(--gray-400);
}

.footer__copy {
    font-size: 0.8rem;
    color: var(--gray-400);
}

/* --- Fade-in --- */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* --- Responsive --- */
@media (max-width: 1024px) {
    .hero .container { grid-template-columns: 1fr; }
    .hero__visual { display: none; }
    .sectors__grid { grid-template-columns: 1fr; gap: var(--space-xl); }
    .about__grid { grid-template-columns: 1fr; }
    .about__details { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav__toggle { display: flex; }
    .nav__menu {
        position: fixed;
        inset: 0;
        background: var(--white);
        flex-direction: column;
        justify-content: center;
        gap: 2rem;
        opacity: 0;
        pointer-events: none;
        transition: var(--transition);
    }
    .nav__menu.active { opacity: 1; pointer-events: all; }
    .nav__menu .nav__link { font-size: 1.3rem; color: var(--navy); }
    .hero { padding: 8rem 0 3rem; min-height: auto; }
    .services__grid { grid-template-columns: 1fr; }
    .contact__grid { grid-template-columns: 1fr; }
    .form__row { grid-template-columns: 1fr; }
    .footer__inner { flex-direction: column; gap: var(--space-sm); text-align: center; }
    .about__details { grid-template-columns: 1fr; }
}