/* ============================================================
   YULON-CREDIT — Main Stylesheet
   ============================================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
    --color-primary:       #1a3c6e;
    --color-primary-dark:  #122b52;
    --color-primary-light: #2a5298;
    --color-accent:        #e8a020;
    --color-accent-dark:   #c8880e;
    --color-text:          #1a1a2e;
    --color-text-muted:    #5a6a7a;
    --color-bg:            #ffffff;
    --color-bg-alt:        #f4f7fb;
    --color-bg-dark:       #0f2040;
    --color-border:        #dde4ef;
    --color-white:         #ffffff;

    --font-family:         'Inter', system-ui, -apple-system, sans-serif;
    --font-size-base:      1rem;
    --font-size-sm:        0.875rem;
    --font-size-lg:        1.125rem;
    --font-size-xl:        1.25rem;
    --font-size-2xl:       1.5rem;
    --font-size-3xl:       2rem;
    --font-size-4xl:       2.75rem;
    --font-size-5xl:       3.5rem;

    --radius-sm:           0.375rem;
    --radius-md:           0.75rem;
    --radius-lg:           1.25rem;
    --radius-xl:           2rem;
    --radius-full:         9999px;

    --shadow-sm:           0 1px 3px rgba(0,0,0,.08);
    --shadow-md:           0 4px 16px rgba(0,0,0,.10);
    --shadow-lg:           0 8px 32px rgba(0,0,0,.14);
    --shadow-xl:           0 16px 48px rgba(0,0,0,.18);

    --transition:          0.25s ease;
    --container-max:       1200px;
    --container-pad:       1.5rem;
    --section-pad:         5rem;
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }

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

ul { list-style: none; }

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ---------- Utility ---------- */
.container {
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-pad);
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin-inline: auto;
    margin-bottom: 3.5rem;
}

.section-header--light .section-title,
.section-header--light .section-subtitle {
    color: var(--color-white);
}

.section-title {
    font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-base);
    font-weight: 600;
    letter-spacing: 0.01em;
    transition: background var(--transition), color var(--transition),
                box-shadow var(--transition), transform var(--transition);
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 3px;
}

.btn--primary {
    background: var(--color-accent);
    color: var(--color-white);
    box-shadow: 0 4px 14px rgba(232,160,32,.35);
}

.btn--primary:hover {
    background: var(--color-accent-dark);
    box-shadow: 0 6px 20px rgba(232,160,32,.45);
    transform: translateY(-2px);
}

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

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

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

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

.navbar__brand {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    flex-shrink: 0;
    text-decoration: none;
}

.navbar__brand-text {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.01em;
    transition: color var(--transition);
}

.navbar__brand:hover .navbar__brand-text { color: var(--color-primary-light); }

.navbar__logo {
    display: block;
    height: 42px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 1px 3px rgba(0,0,0,.15));
    transition: opacity var(--transition);
}

.navbar__brand:hover .navbar__logo { opacity: 0.85; }

.navbar__nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.navbar__link {
    padding: 0.5rem 0.875rem;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition), background var(--transition);
}

.navbar__link:hover {
    color: var(--color-primary);
    background: var(--color-bg-alt);
}

.navbar__link--cta {
    background: var(--color-primary);
    color: var(--color-white) !important;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-full);
    font-weight: 600;
}

.navbar__link--cta:hover {
    background: var(--color-primary-light);
    color: var(--color-white);
}

.navbar__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
}

.navbar__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

.navbar__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.navbar__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
    position: relative;
    overflow: hidden;
    background: var(--color-bg-dark);
    padding: 6rem 0 5rem;
    min-height: 90vh;
    display: flex;
    align-items: stretch;
}

/* Layered background: diagonal gradient + subtle dot grid */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 20% 50%, rgba(42,82,152,.55) 0%, transparent 70%),
        radial-gradient(ellipse 50% 80% at 80% 20%, rgba(232,160,32,.08) 0%, transparent 60%),
        linear-gradient(135deg, #0a1628 0%, #0f2040 50%, #122b52 100%);
    z-index: 0;
}

/* Dot grid overlay */
.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(255,255,255,.07) 1px, transparent 1px);
    background-size: 32px 32px;
    z-index: 0;
}

/* Gold accent bar on the left edge */
.hero__content::before {
    content: '';
    display: block;
    width: 144px;
    height: 4px;
    background: linear-gradient(to right, var(--color-accent), transparent);
    border-radius: 2px;
    margin-bottom: 1.5rem;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
    width: 100%;
}

.hero__content { position: relative; z-index: 2; }

.hero__title {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
    font-weight: 800;
    line-height: 1.1;
    color: var(--color-white);
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero__subtitle {
    font-size: var(--font-size-lg);
    color: rgba(255,255,255,.82);
    line-height: 1.75;
    margin-bottom: 2.5rem;
    max-width: 520px;
}

.hero__actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Hero image — flush right, full height split-screen */
.hero__image-wrap {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 50%;
    overflow: hidden;
    pointer-events: none;
}

.hero__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
    display: block;
}

/* Fade left edge into the blue background */
.hero__image-fade {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to right,
        var(--color-primary) 0%,
        transparent 40%
    );
}

/* ============================================================
   SERVICES
   ============================================================ */
.services {
    padding: var(--section-pad) 0;
    background: var(--color-bg);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

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

.service-card__icon {
    width: 64px;
    height: 64px;
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--color-primary);
    transition: background var(--transition), color var(--transition);
}

.service-card:hover .service-card__icon {
    background: var(--color-primary);
    color: var(--color-white);
}

.service-card__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.875rem;
}

.service-card__desc {
    color: var(--color-text-muted);
    line-height: 1.7;
}

.services__cta {
    text-align: center;
    margin-top: 3rem;
}

/* ============================================================
   STATS
   ============================================================ */
.stats {
    position: relative;
    overflow: hidden;
    padding: var(--section-pad) 0;
    background: #0a1628;
}

/* Same layered treatment as hero */
.stats::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 70% 80% at 90% 50%, rgba(42,82,152,.45) 0%, transparent 65%),
        radial-gradient(ellipse 50% 60% at 10% 80%, rgba(232,160,32,.07) 0%, transparent 55%),
        linear-gradient(135deg, #0a1628 0%, #0f2040 60%, #122b52 100%);
    z-index: 0;
}

/* Dot grid overlay */
.stats::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(255,255,255,.06) 1px, transparent 1px);
    background-size: 32px 32px;
    z-index: 0;
}

.stats .section-header,
.stats__grid {
    position: relative;
    z-index: 1;
}

.stats .section-title { color: var(--color-white); }
.stats .section-subtitle { color: rgba(255,255,255,.65); }

.stats__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.stat-card {
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.2);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    text-align: center;
    backdrop-filter: blur(8px);
    transition: background var(--transition), transform var(--transition);
}

.stat-card:hover {
    background: rgba(255,255,255,.18);
    transform: translateY(-4px);
}

.stat-card__number {
    display: block;
    font-size: clamp(3rem, 6vw, 4.5rem);
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 0.5rem;
    letter-spacing: -0.03em;
}

.stat-card__label {
    display: block;
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 0.75rem;
}

.stat-card__desc {
    font-size: var(--font-size-sm);
    color: rgba(255,255,255,.7);
    line-height: 1.6;
}

/* ============================================================
   FAQ
   ============================================================ */
.faq {
    padding: var(--section-pad) 0;
    background: var(--color-bg);
}

.faq__list {
    max-width: 760px;
    margin-inline: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq__item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: box-shadow var(--transition);
}

.faq__item:has(.faq__question[aria-expanded="true"]) {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.faq__question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-primary);
    text-align: left;
    background: var(--color-bg);
    transition: background var(--transition);
    gap: 1rem;
}

.faq__question:hover { background: var(--color-bg-alt); }

.faq__icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--color-bg-alt);
    flex-shrink: 0;
    position: relative;
    transition: background var(--transition), transform var(--transition);
}

.faq__icon::before,
.faq__icon::after {
    content: '';
    position: absolute;
    background: var(--color-primary);
    border-radius: 2px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.faq__icon::before { width: 10px; height: 2px; }
.faq__icon::after  { width: 2px; height: 10px; transition: transform var(--transition), opacity var(--transition); }

.faq__question[aria-expanded="true"] .faq__icon {
    background: var(--color-primary);
    transform: rotate(45deg);
}

.faq__question[aria-expanded="true"] .faq__icon::before,
.faq__question[aria-expanded="true"] .faq__icon::after {
    background: var(--color-white);
}

.faq__answer {
    padding: 0 1.5rem 1.25rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.faq__answer[hidden] { display: none; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    background: #0a1628;
}

.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    padding-top: 1.25rem;
    padding-bottom: 1.25rem;
}

.footer__brand {
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

.footer__logo-img {
    height: 32px;
    width: auto;
    object-fit: contain;
    opacity: 0.9;
}

.footer__logo {
    font-size: var(--font-size-base);
    font-weight: 800;
    color: var(--color-white);
    letter-spacing: -0.01em;
}

.footer__links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.footer__links a {
    font-size: var(--font-size-sm);
    color: rgba(255,255,255,.6);
    transition: color var(--transition);
}

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

.footer__social-icons {
    display: flex;
    gap: 0.625rem;
}

.footer__social-icons a {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: rgba(255,255,255,.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,.7);
    transition: background var(--transition), color var(--transition);
}

.footer__social-icons a:hover {
    background: var(--color-accent);
    color: var(--color-white);
}

.footer__copy {
    font-size: var(--font-size-sm);
    color: rgba(255,255,255,.4);
}

@media (max-width: 768px) {
    .footer__inner {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 0.875rem;
    }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .services__grid,
    .stats__grid,
    .testimonials__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero__inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero__subtitle { margin-inline: auto; }
    .hero__actions { justify-content: center; }
    .hero__graphic { display: none; }

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

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

    .footer__brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    :root {
        --section-pad: 3.5rem;
        --container-pad: 1.25rem;
    }

    .navbar__nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: 1rem;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-md);
        gap: 0.25rem;
    }

    .navbar__nav.is-open { display: flex; }

    .navbar__link {
        width: 100%;
        padding: 0.75rem 1rem;
        border-radius: var(--radius-sm);
    }

    .navbar__toggle { display: flex; }

    .services__grid,
    .stats__grid,
    .testimonials__grid {
        grid-template-columns: 1fr;
    }

    .hero__image-wrap { display: none; }

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

@media (max-width: 480px) {
    .hero { padding: 4rem 0 3rem; min-height: auto; }
    .hero__title { font-size: var(--font-size-3xl); }
    .btn { padding: 0.75rem 1.5rem; font-size: var(--font-size-sm); }
    .pricing__header { padding: 2rem 1.5rem; }
    .pricing__features { padding: 1.5rem; }
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

.hero__content {
    animation: fadeInUp 0.7s ease both;
}

.service-card,
.stat-card,
.testimonial-card {
    animation: fadeInUp 0.5s ease both;
}

/* Stagger children */
.services__grid > *:nth-child(1) { animation-delay: 0.1s; }
.services__grid > *:nth-child(2) { animation-delay: 0.2s; }
.services__grid > *:nth-child(3) { animation-delay: 0.3s; }

.stats__grid > *:nth-child(1) { animation-delay: 0.1s; }
.stats__grid > *:nth-child(2) { animation-delay: 0.2s; }
.stats__grid > *:nth-child(3) { animation-delay: 0.3s; }

.testimonials__grid > *:nth-child(1) { animation-delay: 0.1s; }
.testimonials__grid > *:nth-child(2) { animation-delay: 0.2s; }
.testimonials__grid > *:nth-child(3) { animation-delay: 0.3s; }

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
}