/* ===== Reset & Base ===== */
/* Leadnet … more than expected | Frank Bormann | LN-2026-IFCON */

/* ===== Local Fonts ===== */
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 300;
    font-display: swap;
    src: url('fonts/inter-latin-300-normal.woff2') format('woff2');
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('fonts/inter-latin-400-normal.woff2') format('woff2');
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 500;
    font-display: swap;
    src: url('fonts/inter-latin-500-normal.woff2') format('woff2');
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('fonts/inter-latin-600-normal.woff2') format('woff2');
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url('fonts/inter-latin-700-normal.woff2') format('woff2');
}
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #1a56db;
    --primary-dark: #1240a8;
    --primary-light: #e8effc;
    --accent: #0ea5e9;
    --dark: #0f172a;
    --dark-soft: #1e293b;
    --gray-900: #111827;
    --gray-700: #374151;
    --gray-500: #6b7280;
    --gray-300: #d1d5db;
    --gray-100: #f3f4f6;
    --white: #ffffff;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow: 0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -2px rgba(0,0,0,.1);
    --shadow-lg: 0 20px 25px -5px rgba(0,0,0,.1), 0 8px 10px -6px rgba(0,0,0,.1);
    --transition: .3s ease;
}

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

section[id] {
    scroll-margin-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--gray-700);
    line-height: 1.7;
    background: var(--white);
    overflow-x: hidden;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Loader ===== */
.loader {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity .6s ease, visibility .6s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loader video {
    max-width: 280px;
    max-height: 280px;
    outline: 6px solid #000;
    border-radius: 16px;
}

/* ===== Liquid Glass Background ===== */
.liquid-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    background: linear-gradient(160deg, #f0f4ff 0%, #ffffff 40%, #e8f4f8 70%, #f5f0ff 100%);
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

.liquid-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: .85;
    will-change: transform;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

.blob-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(26,86,219,.45) 0%, rgba(26,86,219,.1) 70%);
    top: -10%;
    right: -5%;
    animation: liquidFloat1 16s ease-in-out infinite;
}

.blob-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(14,165,233,.4) 0%, rgba(14,165,233,.08) 70%);
    bottom: 10%;
    left: -8%;
    animation: liquidFloat2 20s ease-in-out infinite;
}

.blob-3 {
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, rgba(139,92,246,.35) 0%, rgba(139,92,246,.06) 70%);
    top: 40%;
    right: 15%;
    animation: liquidFloat3 18s ease-in-out infinite;
}

.blob-4 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(14,165,233,.38) 0%, rgba(14,165,233,.06) 70%);
    top: 60%;
    left: 20%;
    animation: liquidFloat1 22s ease-in-out infinite reverse;
}

.blob-5 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(26,86,219,.4) 0%, rgba(26,86,219,.08) 70%);
    top: 15%;
    left: 40%;
    animation: liquidFloat2 14s ease-in-out infinite reverse;
}

@keyframes liquidFloat1 {
    0%, 100% { transform: translate(0, 0) scale(1) rotate(0deg); border-radius: 50%; }
    25% { transform: translate(60px, -80px) scale(1.15) rotate(45deg); border-radius: 40% 60% 55% 45%; }
    50% { transform: translate(-40px, 50px) scale(0.9) rotate(90deg); border-radius: 55% 45% 40% 60%; }
    75% { transform: translate(30px, 70px) scale(1.08) rotate(135deg); border-radius: 45% 55% 60% 40%; }
}

@keyframes liquidFloat2 {
    0%, 100% { transform: translate(0, 0) scale(1) rotate(0deg); border-radius: 50%; }
    20% { transform: translate(-50px, 40px) scale(1.1) rotate(-30deg); border-radius: 60% 40% 50% 50%; }
    40% { transform: translate(70px, -30px) scale(0.95) rotate(-60deg); border-radius: 45% 55% 60% 40%; }
    60% { transform: translate(-30px, -60px) scale(1.12) rotate(-90deg); border-radius: 50% 50% 40% 60%; }
    80% { transform: translate(40px, 50px) scale(0.92) rotate(-120deg); border-radius: 40% 60% 55% 45%; }
}

@keyframes liquidFloat3 {
    0%, 100% { transform: translate(0, 0) scale(1); border-radius: 50%; }
    33% { transform: translate(-60px, -50px) scale(1.2); border-radius: 55% 45% 50% 50%; }
    66% { transform: translate(50px, 40px) scale(0.85); border-radius: 45% 55% 45% 55%; }
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,.45);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(255,255,255,.3);
    transition: all var(--transition);
}

.navbar.scrolled {
    background: rgba(255,255,255,.7);
    box-shadow: 0 4px 30px rgba(0,0,0,.06);
    border-bottom-color: rgba(255,255,255,.5);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100px;
}

.nav-logo img {
    height: 80px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    border-radius: 8px;
    font-size: .9rem;
    font-weight: 500;
    color: var(--gray-700);
    transition: all var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background: var(--primary-light);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--dark);
    border-radius: 2px;
    transition: all var(--transition);
}

/* ===== Intro ===== */
.intro {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 24px 80px;
    background: transparent;
    position: relative;
    overflow: hidden;
}

.intro::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(26,86,219,.1) 0%, transparent 70%);
    pointer-events: none;
    animation: floatBlob 8s ease-in-out infinite;
}

.intro::after {
    content: '';
    position: absolute;
    bottom: -15%;
    left: -5%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(14,165,233,.08) 0%, transparent 70%);
    pointer-events: none;
    animation: floatBlob 10s ease-in-out infinite reverse;
}

@keyframes floatBlob {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -40px) scale(1.05); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(15px, 30px) scale(1.03); }
}

.intro-content {
    max-width: 800px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.intro h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--dark);
    line-height: 1.2;
    margin-bottom: 16px;
}

.intro h1 .highlight {
    color: var(--primary);
}

.intro-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 16px;
}

.intro-text {
    font-size: 1.1rem;
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto 32px;
}

.intro-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 10px;
    font-size: .95rem;
    font-weight: 600;
    transition: all .4s cubic-bezier(.25,.46,.45,.94);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(26,86,219,.3);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(26,86,219,.4);
}

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

.btn-secondary:hover {
    background: var(--primary-light);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(26,86,219,.15);
}

/* ===== Section Titles ===== */
.section-title {
    font-size: clamp(1.6rem, 3.5vw, 2.4rem);
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--gray-500);
    margin-bottom: 48px;
}

/* ===== Services ===== */
.services {
    padding: 100px 0;
    background: transparent;
    text-align: center;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.service-card {
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,.55);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255,255,255,.6);
    box-shadow: 0 4px 30px rgba(0,0,0,.05);
    transition: all .4s cubic-bezier(.25,.46,.45,.94);
    text-align: left;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

.service-card:hover {
    transform: translateY(-8px);
    background: rgba(255,255,255,.75);
    box-shadow: 0 25px 50px -12px rgba(26,86,219,.15);
    border-color: rgba(255,255,255,.8);
}

.service-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: all .4s cubic-bezier(.25,.46,.45,.94);
}

.service-card:hover .service-icon {
    transform: translateY(-4px) scale(1.1);
    background: var(--primary);
    color: var(--white);
}

.service-icon svg {
    width: 28px;
    height: 28px;
}

.service-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 12px;
}

.service-card p {
    font-size: .95rem;
    color: var(--gray-500);
    line-height: 1.7;
}

/* ===== About ===== */
.about {
    padding: 100px 0;
    background: rgba(255,255,255,.3);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-content .section-title {
    margin-bottom: 24px;
}

.about-content p {
    margin-bottom: 16px;
    font-size: 1rem;
    color: var(--gray-700);
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.highlight-card {
    padding: 28px 32px;
    border-radius: var(--radius);
    background: rgba(255,255,255,.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,.5);
    box-shadow: 0 4px 20px rgba(0,0,0,.06);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all .4s cubic-bezier(.25,.46,.45,.94);
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

.highlight-card:hover {
    transform: translateX(8px);
    background: rgba(255,255,255,.8);
    box-shadow: 0 10px 30px -8px rgba(26,86,219,.15);
}

.highlight-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
    min-width: 80px;
}

.highlight-label {
    font-size: .95rem;
    color: var(--gray-700);
    font-weight: 500;
}

/* ===== Philosophy / Why ifcon ===== */
.why-ifcon {
    padding: 100px 0;
    background: transparent;
    text-align: center;
}

.philosophy-text {
    max-width: 800px;
    margin: 0 auto 48px;
    font-size: 1.05rem;
    color: var(--gray-700);
    line-height: 1.8;
}

.reasons-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    text-align: left;
}

.reason-item {
    padding: 24px;
    border-radius: var(--radius);
    background: rgba(255,255,255,.5);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,.4);
    display: flex;
    gap: 16px;
    align-items: flex-start;
    transition: all .4s cubic-bezier(.25,.46,.45,.94);
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

.reason-item:hover {
    background: rgba(232,239,252,.7);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px -6px rgba(26,86,219,.12);
    border-color: rgba(255,255,255,.6);
}

.reason-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: .9rem;
    flex-shrink: 0;
}

.reason-item p {
    font-size: .9rem;
    color: var(--gray-700);
}

/* ===== Contact ===== */
.contact {
    padding: 100px 0;
    background: rgba(255,255,255,.3);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    text-align: center;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    text-align: left;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 22px;
    height: 22px;
}

.contact-item h4 {
    font-size: .85rem;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: .5px;
    margin-bottom: 4px;
}

.contact-item a,
.contact-item p {
    font-size: 1rem;
    color: var(--dark);
    font-weight: 500;
}

.contact-item a:hover {
    color: var(--primary);
}

.cta-card {
    padding: 40px;
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,.6);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255,255,255,.5);
    box-shadow: 0 4px 30px rgba(0,0,0,.06);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    transition: all .4s cubic-bezier(.25,.46,.45,.94);
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

.cta-card:hover {
    background: rgba(255,255,255,.8);
    box-shadow: 0 15px 40px rgba(0,0,0,.08);
}

.cta-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
}

.cta-card p {
    color: var(--gray-500);
    margin-bottom: 28px;
    line-height: 1.7;
}

/* ===== Footer ===== */
.footer {
    background: var(--dark);
    color: var(--gray-300);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,.1);
}

.footer-logo {
    height: 36px;
    width: auto;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: .9rem;
    line-height: 1.6;
    color: var(--gray-500);
}

.footer h4 {
    font-size: .85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--white);
    margin-bottom: 20px;
}

.footer ul {
    list-style: none;
}

.footer ul li {
    margin-bottom: 10px;
}

.footer ul a {
    font-size: .9rem;
    color: var(--gray-500);
    transition: color var(--transition);
}

.footer ul a:hover {
    color: var(--white);
}

.footer-contact p {
    font-size: .9rem;
    margin-bottom: 8px;
    color: var(--gray-500);
}

.footer-contact a {
    color: var(--gray-500);
}

.footer-contact a:hover {
    color: var(--white);
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: .8rem;
    color: var(--gray-500);
}

.footer-credit {
    margin-top: 8px;
    font-size: .7rem;
    color: var(--gray-500);
    opacity: .6;
}

/* ===== Animations ===== */
.fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity .8s cubic-bezier(.25,.46,.45,.94), transform .8s cubic-bezier(.25,.46,.45,.94);
}

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

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

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

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

@media (max-width: 768px) {
    /* Mobile Nav */
    .nav-container {
        height: 72px;
        padding: 0 16px;
    }

    .nav-logo img {
        height: 60px;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 24px;
        gap: 4px;
        box-shadow: var(--shadow-lg);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-20px);
        transition: opacity .3s ease, transform .3s ease, visibility .3s ease;
        z-index: 999;
    }

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

    .nav-link {
        padding: 12px 16px;
        font-size: 1rem;
        display: block;
    }

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

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

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

    /* Intro */
    .intro {
        padding: 100px 20px 60px;
        min-height: auto;
    }

    .intro-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

    /* Services */
    .services {
        padding: 60px 0;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .service-card {
        padding: 28px 24px;
    }

    /* About */
    .about {
        padding: 60px 0;
    }

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

    .highlight-card {
        padding: 20px 24px;
    }

    .highlight-number {
        font-size: 1.4rem;
        min-width: 60px;
    }

    /* Philosophy */
    .why-ifcon {
        padding: 60px 0;
    }

    .reasons-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    /* Contact */
    .contact {
        padding: 60px 0;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .cta-card {
        padding: 28px 24px;
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .section-subtitle {
        margin-bottom: 32px;
    }

    /* Performance: disable heavy effects on mobile */
    .liquid-bg {
        position: fixed;
        background: linear-gradient(160deg, #e8effc 0%, #f8faff 40%, #e8f4f8 70%, #f0ecff 100%);
    }

    .liquid-blob {
        display: none;
    }

    .service-card,
    .highlight-card,
    .reason-item,
    .cta-card {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        background: rgba(255,255,255,.85);
    }

    .about,
    .contact {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        background: rgba(255,255,255,.5);
    }

    .intro::before,
    .intro::after {
        display: none;
    }

    .fade-in {
        transition-duration: .4s;
    }
}

@media (max-width: 480px) {
    .intro h1 {
        font-size: 1.6rem;
    }

    .intro-subtitle {
        font-size: 1rem;
    }

    .intro-text {
        font-size: .95rem;
    }
}