/* ===================================
   145 Jahre LUKA & Raab und Thiele
   Premium Event Website
   =================================== */

/* --- CSS Variables --- */
:root {
    --blue-900: #000814;
    --blue-800: #001D3D;
    --blue-700: #003566;
    --blue-600: #003D7A;
    --blue-500: #0066CC;
    --blue-400: #2E86DE;
    --blue-100: #E8F4FD;

    --gold-500: #D4AF37;
    --gold-400: #E8C547;
    --gold-300: #F0D76B;
    --gold-600: #B8860B;

    --gray-900: #111827;
    --gray-800: #1F2937;
    --gray-700: #374151;
    --gray-600: #4B5563;
    --gray-500: #6B7280;
    --gray-400: #9CA3AF;
    --gray-300: #D1D5DB;
    --gray-200: #E5E7EB;
    --gray-100: #F3F4F6;
    --gray-50: #F9FAFB;
    --white: #FFFFFF;

    --font-heading: 'Montserrat', 'Segoe UI', sans-serif;
    --font-body: 'Montserrat', 'Segoe UI', sans-serif;

    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);

    --shadow-subtle: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-sm: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 25px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
    --shadow-lg: 0 20px 50px -12px rgba(0,0,0,0.15);
    --shadow-xl: 0 25px 60px -12px rgba(0,0,0,0.25);
    --shadow-gold: 0 10px 40px -10px rgba(212, 175, 55, 0.3);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    color: var(--gray-800);
    line-height: 1.7;
    overflow-x: hidden;
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* --- Utility --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 clamp(1.5rem, 4vw, 3rem);
}

/* ===================================
   NAVIGATION
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0.75rem 0;
    transition: all 0.4s var(--ease-smooth);
}

.navbar.scrolled {
    background: rgba(0, 8, 20, 0.92);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    padding: 0.75rem 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 clamp(1.5rem, 4vw, 3rem);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo img {
    height: 120px;
    width: auto;
    transition: all 0.3s var(--ease-smooth);
    background: rgba(255, 255, 255, 0.95);
    padding: 8px 18px;
    border-radius: 10px;
}

.navbar.scrolled .nav-logo img {
    height: 50px;
    padding: 4px 12px;
}

.nav-links {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 0.03em;
    transition: all 0.3s var(--ease-smooth);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gold-500);
    transition: width 0.3s var(--ease-out-expo);
}

.nav-links a:hover {
    color: var(--white);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-cta {
    background: linear-gradient(135deg, var(--gold-500), var(--gold-400));
    color: var(--blue-900) !important;
    padding: 0.6rem 1.5rem;
    border-radius: 100px;
    font-weight: 700;
    letter-spacing: 0.04em;
    transition: all 0.3s var(--ease-out-back) !important;
}

.nav-cta::after {
    display: none !important;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 4px;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 26px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: all 0.3s var(--ease-smooth);
}

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

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

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

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

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 60%;
    transform: scale(1.1);
    animation: heroZoom 20s var(--ease-smooth) infinite alternate;
}

@keyframes heroZoom {
    from { transform: scale(1.1); }
    to { transform: scale(1.2); }
}

.hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background:
        linear-gradient(180deg,
            rgba(0, 8, 20, 0.82) 0%,
            rgba(0, 29, 61, 0.72) 35%,
            rgba(0, 53, 102, 0.70) 65%,
            rgba(0, 8, 20, 0.85) 100%
        );
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 300px;
    z-index: 2;
    background: linear-gradient(to bottom,
        transparent 0%,
        rgba(0, 8, 20, 0.15) 25%,
        rgba(0, 8, 20, 0.45) 50%,
        rgba(0, 8, 20, 0.8) 75%,
        var(--blue-900) 100%
    );
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: var(--white);
    padding: 0 2rem;
    padding-top: 100px;
    max-width: 900px;
}

.animate-on-load {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s var(--ease-out-expo) forwards;
    animation-delay: var(--delay, 0s);
}

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    margin-bottom: 2rem;
}

.hero-anniversary-logo {
    height: clamp(70px, 12vw, 130px);
    width: auto;
    margin: 0 auto;
    filter: drop-shadow(0 8px 20px rgba(0, 0, 0, 0.4));
    background: rgba(255, 255, 255, 0.95);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
}

.hero-title {
    font-family: var(--font-heading);
    margin-bottom: 1.5rem;
    line-height: 1;
}

.hero-title-top {
    display: block;
    font-size: clamp(2.5rem, 7vw, 5.5rem);
    font-weight: 400;
    letter-spacing: 0.04em;
    margin-bottom: 0.25rem;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero-title-bottom {
    display: block;
    font-size: clamp(3rem, 9vw, 7rem);
    font-weight: 700;
    background: linear-gradient(135deg, var(--gold-300), var(--gold-500), var(--gold-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 4px 15px rgba(212, 175, 55, 0.3));
}

.hero-tagline {
    font-size: clamp(1rem, 2.2vw, 1.4rem);
    font-weight: 300;
    letter-spacing: 0.06em;
    opacity: 0.9;
    margin-bottom: 2.5rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.hero-company-logo {
    height: clamp(32px, 5vw, 48px);
    width: auto;
    background: rgba(255, 255, 255, 0.95);
    padding: 6px 14px;
    border-radius: 8px;
    transition: all 0.3s var(--ease-smooth);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.hero-company-logo:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.hero-logo-divider {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, transparent, rgba(255,255,255,0.5), transparent);
}

/* Hero CTA Button */
.btn-hero {
    display: inline-block;
    padding: 1rem 3rem;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--blue-900);
    background: linear-gradient(135deg, var(--gold-400), var(--gold-500));
    border-radius: 100px;
    transition: all 0.4s var(--ease-out-back);
    box-shadow: 0 8px 30px rgba(212, 175, 55, 0.3);
}

.btn-hero:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 40px rgba(212, 175, 55, 0.5);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    color: var(--white);
    text-align: center;
    z-index: 2;
    animation: fadeUp 0.8s var(--ease-out-expo) forwards, float 3s ease-in-out infinite 2s;
    animation-delay: var(--delay, 0s);
    opacity: 0;
}

@keyframes float {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-8px); }
}

.scroll-indicator span {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    opacity: 0.7;
}

.scroll-indicator svg {
    margin: 0 auto;
    opacity: 0.7;
}

/* ===================================
   IMAGE STRIPS
   =================================== */
.image-strip {
    position: relative;
    width: 100%;
    overflow: hidden;
    line-height: 0;
    background: var(--blue-900);
}

.image-strip::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    z-index: 1;
    background: linear-gradient(to bottom, var(--blue-900) 0%, transparent 100%);
    pointer-events: none;
}

.image-strip img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.6s var(--ease-smooth);
}

.image-strip:hover img {
    transform: scale(1.02);
}

/* ===================================
   SECTION HEADERS
   =================================== */
.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gold-500);
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-label::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--gold-500), transparent);
}

.section-header h2 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4.5vw, 3.2rem);
    font-weight: 700;
    color: var(--blue-800);
    line-height: 1.2;
    margin-bottom: 0.75rem;
}

.section-subtitle {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: var(--gray-500);
    font-weight: 400;
    max-width: 600px;
    margin: 0 auto;
}

.section-header.light h2 {
    color: var(--white);
}

.section-header.light .section-subtitle {
    color: rgba(255, 255, 255, 0.7);
}

/* ===================================
   EINLADUNG SECTION
   =================================== */
.einladung {
    padding: clamp(4rem, 8vw, 7rem) 0;
    background: var(--gray-50);
}

.einladung-hero {
    max-width: 900px;
    margin: 0 auto 3rem;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.team-collage {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.6s var(--ease-smooth);
}

.einladung-hero:hover .team-collage {
    transform: scale(1.03);
}

.einladung-text {
    max-width: 750px;
    margin: 0 auto 3rem;
}

.lead-text {
    font-size: clamp(1.05rem, 2vw, 1.2rem);
    line-height: 1.9;
    text-align: center;
    color: var(--gray-700);
}

.lead-text strong {
    color: var(--blue-700);
    font-weight: 700;
}

/* Event Cards */
.event-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto 3rem;
}

.event-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
    transition: all 0.4s var(--ease-out-expo);
    position: relative;
    overflow: hidden;
}

.event-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--blue-600), var(--gold-500));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s var(--ease-out-expo);
}

.event-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(212, 175, 55, 0.2);
}

.event-card:hover::before {
    transform: scaleX(1);
}

.event-card-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--blue-100);
    border-radius: 50%;
    color: var(--blue-600);
    transition: all 0.4s var(--ease-out-back);
}

.event-card:hover .event-card-icon {
    background: var(--blue-600);
    color: var(--white);
    transform: scale(1.1);
}

.event-card h3 {
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gray-400);
    margin-bottom: 0.5rem;
}

.event-card-main {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--blue-800);
}

.event-card-sub {
    font-size: 0.9rem;
    color: var(--gray-500);
    margin-top: 0.25rem;
}

/* CTA Center */
.cta-center {
    text-align: center;
}

/* ===================================
   BUTTONS
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-body);
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    border-radius: var(--radius-md);
    transition: all 0.4s var(--ease-out-back);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    padding: 1rem 2.5rem;
    font-size: 0.95rem;
    color: var(--white);
    background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
    box-shadow: 0 8px 25px rgba(0, 61, 122, 0.25);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 61, 122, 0.35);
}

.btn-submit {
    width: 100%;
    padding: 1.1rem 2.5rem;
    font-size: 1rem;
    color: var(--white);
    background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
    border-radius: var(--radius-md);
    box-shadow: 0 8px 25px rgba(0, 61, 122, 0.25);
    justify-content: center;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(0, 61, 122, 0.4);
}

.btn-submit svg {
    transition: transform 0.3s var(--ease-out-back);
}

.btn-submit:hover svg {
    transform: translateX(4px);
}

/* ===================================
   FLIEGER PARALLAX SECTION
   =================================== */
.flieger-section {
    position: relative;
    height: clamp(250px, 40vw, 450px);
    overflow: hidden;
}

.flieger-bg {
    position: absolute;
    inset: 0;
}

.flieger-bg img {
    width: 100%;
    height: 120%;
    object-fit: cover;
    object-position: center bottom;
}

.flieger-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg,
        rgba(0, 8, 20, 0.1) 0%,
        transparent 30%,
        transparent 70%,
        rgba(0, 8, 20, 0.1) 100%
    );
}

/* ===================================
   VENUE SECTION
   =================================== */
.venue {
    padding: clamp(4rem, 8vw, 7rem) 0;
    background: var(--white);
}

.venue-gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: auto auto;
    gap: 1rem;
    margin-bottom: 3rem;
}

.venue-img {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
}

.venue-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s var(--ease-smooth);
}

.venue-img:hover img {
    transform: scale(1.08);
}

.venue-img-large {
    grid-column: 1 / 3;
    grid-row: 1 / 3;
    min-height: 350px;
}

.venue-img:not(.venue-img-large) {
    min-height: 170px;
}

.venue-img-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(0, 8, 20, 0.7) 100%);
    display: flex;
    align-items: flex-end;
    padding: 1.25rem;
    opacity: 0;
    transition: opacity 0.4s var(--ease-smooth);
}

.venue-img:hover .venue-img-overlay {
    opacity: 1;
}

.venue-img-overlay span {
    color: var(--white);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.venue-description {
    max-width: 750px;
    margin: 0 auto;
    text-align: center;
}

.venue-description p {
    font-size: clamp(1rem, 1.8vw, 1.1rem);
    line-height: 1.9;
    color: var(--gray-600);
}

/* ===================================
   COMPANIES SECTION
   =================================== */
.unternehmen {
    padding: clamp(4rem, 8vw, 7rem) 0;
    background: var(--gray-50);
}

.company-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 950px;
    margin: 0 auto;
}

.company-grid.three-columns {
    grid-template-columns: repeat(3, 1fr);
    max-width: 1100px;
}

.company-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
    transition: all 0.5s var(--ease-out-expo);
    position: relative;
    overflow: hidden;
}

.company-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--blue-600), var(--blue-500), var(--gold-500));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s var(--ease-out-expo);
}

.company-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(212, 175, 55, 0.15);
}

.company-card:hover::after {
    transform: scaleX(1);
}

.company-card-logo {
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    display: inline-block;
}

.company-card-logo img {
    max-width: 180px;
    height: auto;
    margin: 0 auto;
}

.company-card h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--blue-800);
    margin-bottom: 0.75rem;
}

.company-desc {
    font-size: 1rem;
    color: var(--gray-600);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.company-contact {
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-200);
}

.company-contact p {
    font-size: 0.9rem;
    color: var(--gray-600);
    margin-bottom: 0.25rem;
}

.company-contact a {
    display: inline-block;
    margin-top: 0.75rem;
    font-weight: 700;
    color: var(--blue-600);
    font-size: 0.95rem;
    transition: all 0.3s var(--ease-smooth);
}

.company-contact a:hover {
    color: var(--blue-500);
}

/* ===================================
   RSVP SECTION
   =================================== */
.rsvp {
    position: relative;
    padding: clamp(5rem, 10vw, 8rem) 0;
    overflow: hidden;
}

.rsvp-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.rsvp-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.rsvp-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(135deg,
        rgba(0, 8, 20, 0.92) 0%,
        rgba(0, 29, 61, 0.88) 50%,
        rgba(0, 53, 102, 0.90) 100%
    );
}

.rsvp-container {
    position: relative;
    z-index: 2;
}

.rsvp-form-wrapper {
    max-width: 700px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(20px);
    padding: clamp(2rem, 5vw, 3.5rem);
    border-radius: var(--radius-xl);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.3);
}

.rsvp-form {
    color: var(--gray-800);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 0.4rem;
    letter-spacing: 0.02em;
}

.required {
    color: var(--gold-500);
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.85rem 1.1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--gray-800);
    background: var(--white);
    transition: all 0.3s var(--ease-smooth);
    -webkit-appearance: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-400);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--blue-500);
    box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.08);
}

.form-group input.valid { border-color: #34D399; }
.form-group input.invalid,
.form-group select.invalid { border-color: #F87171; }

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

/* Custom Checkbox */
.form-checkbox label {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--gray-600);
    line-height: 1.5;
}

.form-checkbox input[type="checkbox"] {
    width: auto;
    margin-top: 2px;
    accent-color: var(--blue-600);
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background: var(--blue-900);
    color: var(--white);
    padding: 3.5rem 0 2rem;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold-500), transparent);
}

.footer-inner {
    text-align: center;
}

.footer-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-logo {
    max-width: 110px;
    height: 44px;
    object-fit: contain;
    background: rgba(255, 255, 255, 0.95);
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.3s var(--ease-smooth);
    opacity: 0.9;
}

.footer-logo:hover {
    opacity: 1;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.1);
}

.footer-text {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

.footer-text p {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.5);
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--gold-500);
}

.footer-sep {
    margin: 0 0.5rem;
}

/* ===================================
   SCROLL ANIMATIONS
   =================================== */
.fade-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s var(--ease-out-expo),
                transform 0.7s var(--ease-out-expo);
    transition-delay: var(--delay, 0s);
}

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

/* ===================================
   NOTIFICATION
   =================================== */
.notification {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    max-width: 420px;
    background: var(--white);
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    z-index: 10000;
    animation: slideIn 0.4s var(--ease-out-expo);
    border-left: 4px solid var(--blue-600);
}

.notification-success {
    border-left-color: #34D399;
}

.notification-error {
    border-left-color: #F87171;
}

@keyframes slideIn {
    from {
        transform: translateX(120%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(120%);
        opacity: 0;
    }
}

.notification-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.notification-icon {
    font-size: 1.25rem;
    font-weight: 700;
    flex-shrink: 0;
}

.notification-success .notification-icon { color: #34D399; }
.notification-error .notification-icon { color: #F87171; }

.notification-message {
    flex: 1;
    font-size: 0.9rem;
    color: var(--gray-800);
    line-height: 1.4;
}

.notification-close {
    font-size: 1.25rem;
    color: var(--gray-400);
    padding: 0;
    transition: color 0.2s;
    flex-shrink: 0;
}

.notification-close:hover {
    color: var(--gray-700);
}

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

    .venue-img-large {
        grid-column: 1 / 3;
        grid-row: 1 / 2;
        min-height: 300px;
    }

    .venue-img:not(.venue-img-large) {
        min-height: 200px;
    }
}

@media (max-width: 768px) {
    /* Nav */
    .hamburger {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        height: 100dvh;
        background: rgba(0, 8, 20, 0.97);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        gap: 2rem;
        padding: 2rem;
        transition: right 0.4s var(--ease-out-expo);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links a {
        font-size: 1.1rem;
    }

    .nav-cta {
        width: 100%;
        text-align: center;
        padding: 0.8rem 2rem;
    }

    /* Event Cards */
    .event-cards {
        grid-template-columns: 1fr;
    }

    /* Form */
    .form-row {
        grid-template-columns: 1fr;
    }

    /* Venue Gallery */
    .venue-gallery {
        grid-template-columns: 1fr;
    }

    .venue-img-large {
        grid-column: 1;
        min-height: 250px;
    }

    .venue-img:not(.venue-img-large) {
        min-height: 200px;
    }

    /* Companies */
    .company-grid,
    .company-grid.three-columns {
        grid-template-columns: 1fr;
    }

    /* Hero */
    .hero-logos {
        gap: 1.25rem;
    }

    .hero-company-logo {
        height: 28px;
    }

    .hero-logo-divider {
        height: 30px;
    }

    /* Flieger */
    .flieger-section {
        height: 200px;
    }
}

@media (max-width: 480px) {
    .rsvp-form-wrapper {
        padding: 1.5rem;
        border-radius: var(--radius-lg);
    }

    .event-card {
        padding: 2rem 1.5rem;
    }

    .company-card {
        padding: 2rem 1.5rem;
    }

    .hero-badge {
        margin-bottom: 1.5rem;
    }

    .hero-anniversary-logo {
        height: 80px;
    }
}

/* ===================================
   PRINT
   =================================== */
@media print {
    .navbar,
    .scroll-indicator,
    .rsvp,
    .flieger-section,
    .image-strip {
        display: none;
    }

    .hero {
        min-height: auto;
        padding: 2rem;
    }

    section {
        page-break-inside: avoid;
    }
}