/* ==========================================================================
   Politech Dynamics - Custom CSS
   Glassmorphism, Gradient Text, Glass Cards, Navigation, Footer
   Ergaenzung zum Particle Theme V2.0.1
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties
   -------------------------------------------------------------------------- */
:root {
    /* CI-Farben (Design-Guideline) */
    --pd-primary: #1B3A5C;
    --pd-accent: #4DB8E8;
    --pd-accent-dark: #3A9FD0;
    --pd-accent-light: #6DC8F0;
    --pd-silver: #B8B8B8;

    /* Hintergründe (auf CI-Dunkelblau basierend) */
    --pd-bg-dark: #152d4a;
    --pd-bg-darker: #0f2238;
    --pd-glass-bg: rgba(21, 45, 74, 0.55);
    --pd-glass-border: rgba(255, 255, 255, 0.10);
    --pd-glass-blur: 16px;

    /* Textfarben */
    --pd-text-muted: #8a9bb0;
    --pd-text-bright: #c8d6e5;

    /* Transition */
    --pd-transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --------------------------------------------------------------------------
   1. Glassmorphism Navigation
   -------------------------------------------------------------------------- */
.pd-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    padding: 1rem 0;
    background: transparent;
    transition: background var(--pd-transition),
                backdrop-filter var(--pd-transition),
                padding var(--pd-transition),
                box-shadow var(--pd-transition);
}

.pd-navbar.scrolled {
    background: rgba(15, 34, 56, 0.85);
    -webkit-backdrop-filter: blur(var(--pd-glass-blur));
    backdrop-filter: blur(var(--pd-glass-blur));
    padding: 0.5rem 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--pd-glass-border);
}

.pd-navbar .navbar-brand img {
    height: 42px;
    width: 42px;
    object-fit: contain;
    border-radius: 6px;
    transition: height var(--pd-transition), width var(--pd-transition);
}

.pd-navbar.scrolled .navbar-brand img {
    height: 34px;
    width: 34px;
}

.pd-navbar .nav-link {
    color: rgba(255, 255, 255, 0.85) !important;
    font-family: 'Roboto', 'Titillium Web', sans-serif;
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    padding: 0.5rem 1rem !important;
    transition: color var(--pd-transition);
    position: relative;
}

.pd-navbar .nav-link:hover,
.pd-navbar .nav-link:focus {
    color: var(--pd-accent) !important;
}

.pd-navbar .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 70%;
    height: 2px;
    background: linear-gradient(90deg, var(--pd-accent-dark), var(--pd-accent-light));
    transition: transform var(--pd-transition);
}

.pd-navbar .nav-link:hover::after {
    transform: translateX(-50%) scaleX(1);
}

/* Dropdown */
.pd-navbar .dropdown-menu {
    background: rgba(15, 34, 56, 0.92);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border: 1px solid var(--pd-glass-border);
    border-radius: 12px;
    padding: 0.75rem 0;
    margin-top: 0.5rem;
    min-width: 240px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.25s ease;
}

.pd-navbar .dropdown:hover > .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.pd-navbar .dropdown-item {
    color: rgba(255, 255, 255, 0.75);
    padding: 0.55rem 1.5rem;
    font-size: 0.88rem;
    transition: all 0.2s ease;
}

.pd-navbar .dropdown-item:hover {
    color: #fff;
    background: rgba(77, 184, 232, 0.15);
    padding-left: 1.8rem;
}

/* Navbar toggler (hamburger) */
.pd-navbar .navbar-toggler {
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 0.4rem 0.65rem;
}

.pd-navbar .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Mobile nav collapse */
@media (max-width: 991.98px) {
    .pd-navbar .navbar-collapse {
        background: rgba(15, 34, 56, 0.95);
        -webkit-backdrop-filter: blur(20px);
        backdrop-filter: blur(20px);
        border-radius: 12px;
        padding: 0.25rem 0.75rem !important;
        margin-top: 0.5rem;
        border: 1px solid var(--pd-glass-border);
    }

    .pd-navbar .navbar-nav,
    .pd-navbar ul.navbar-nav,
    nav.pd-navbar ul.navbar-nav,
    #mainNav ul.navbar-nav {
        padding: 0 !important;
        margin: 0 !important;
        margin-top: 0 !important;
        overflow: visible !important;
    }

    .pd-navbar .nav-item {
        border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }

    .pd-navbar .nav-item:last-child {
        border-bottom: none;
    }

    .pd-navbar .nav-link {
        padding: 0.6rem 0.5rem !important;
        font-size: 0.9rem !important;
    }

    .pd-navbar .dropdown-menu {
        position: static !important;
        background: none;
        border: none;
        box-shadow: none;
        padding: 0 0 0.25rem 1rem;
        margin: 0;
        opacity: 1 !important;
        visibility: visible !important;
        transform: none !important;
        min-width: 0;
        display: block;
    }

    .pd-navbar .dropdown-toggle::after {
        display: none;
    }

    .pd-navbar .dropdown-item {
        padding: 0.35rem 0.5rem;
        font-size: 0.85rem;
    }

    .pd-navbar .nav-link::after {
        display: none;
    }
}

/* Override Particle Theme mobile margin-top on navbar-nav (max-width: 1199px) */
@media (max-width: 1199px) {
    .pd-navbar ul.navbar-nav,
    nav#mainNav ul.navbar-nav {
        margin-top: 0 !important;
        overflow: visible !important;
    }
}

/* Nav divider between main dropdowns and utility links */
.pd-nav-divider {
    align-items: center;
    margin: 0 0.35rem;
}
.pd-nav-divider::before {
    content: '';
    display: block;
    width: 1px;
    height: 18px;
    background: rgba(255, 255, 255, 0.15);
}

/* --------------------------------------------------------------------------
   2. Gradient Text
   -------------------------------------------------------------------------- */
.pd-gradient-text {
    background: linear-gradient(135deg, var(--pd-accent), var(--pd-accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.pd-gradient-text-accent {
    background: linear-gradient(135deg, var(--pd-accent-dark), var(--pd-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --------------------------------------------------------------------------
   3. Glass Cards
   -------------------------------------------------------------------------- */
.pd-glass-card {
    background: var(--pd-glass-bg);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border: 1px solid var(--pd-glass-border);
    border-radius: 16px;
    padding: 2.5rem;
    transition: transform var(--pd-transition), box-shadow var(--pd-transition), border-color var(--pd-transition);
}

.pd-glass-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.12);
}

.pd-glass-card.pd-accent-blue {
    border-top: none;
    border-left: 3px solid var(--pd-accent);
    border-radius: 4px 16px 16px 4px;
}

.pd-glass-card.pd-accent-blue:hover {
    box-shadow: -4px 0 30px rgba(77, 184, 232, 0.15), 0 12px 40px rgba(77, 184, 232, 0.12);
}

.pd-glass-card.pd-accent-blue-dark {
    border-top: none;
    border-left: 3px solid var(--pd-accent-dark);
    border-radius: 4px 16px 16px 4px;
}

.pd-glass-card.pd-accent-blue-dark:hover {
    box-shadow: -4px 0 30px rgba(58, 159, 208, 0.18), 0 12px 40px rgba(58, 159, 208, 0.15);
}

/* Pillar variant for "Zwei Säulen" cards */
.pd-glass-card.pd-pillar {
    border-left: none;
    border-radius: 6px 6px 4px 4px;
    border-top: 4px solid var(--pd-accent);
    border-bottom: 2px solid rgba(255, 255, 255, 0.06);
    position: relative;
    background-image: linear-gradient(180deg, rgba(77, 184, 232, 0.06) 0%, transparent 30%);
}

.pd-glass-card.pd-pillar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40%;
    height: 4px;
    background: linear-gradient(90deg, transparent, rgba(77, 184, 232, 0.4), transparent);
    border-radius: 0 0 4px 4px;
}

.pd-glass-card.pd-pillar::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
}

.pd-glass-card.pd-pillar:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 36px rgba(77, 184, 232, 0.12);
}

.pd-glass-card.pd-pillar.pd-pillar--dark {
    border-top-color: var(--pd-accent-dark);
    background-image: linear-gradient(180deg, rgba(58, 159, 208, 0.06) 0%, transparent 30%);
}

.pd-glass-card.pd-pillar.pd-pillar--dark::before {
    background: linear-gradient(90deg, transparent, rgba(58, 159, 208, 0.4), transparent);
}

/* --------------------------------------------------------------------------
   4. CTA Buttons – Glassmorphism
   -------------------------------------------------------------------------- */
button.pd-btn-primary,
button.pd-btn-secondary,
button.pd-btn-outline {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    outline: none;
}

.pd-btn-primary {
    display: inline-block;
    padding: 0.8rem 2rem;
    font-family: 'Roboto', sans-serif;
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: #fff;
    background: rgba(77, 184, 232, 0.12);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(77, 184, 232, 0.25);
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--pd-transition);
    text-decoration: none;
    position: relative;
    overflow: hidden;
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.1),
                0 4px 12px rgba(77, 184, 232, 0.15);
}

.pd-btn-primary::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg,
                rgba(77, 184, 232, 0.18) 0%,
                rgba(61, 159, 208, 0.06) 100%);
    border-radius: 12px;
    pointer-events: none;
    transition: opacity var(--pd-transition);
}

.pd-btn-primary:hover {
    transform: translateY(-2px);
    background: rgba(77, 184, 232, 0.2);
    border-color: rgba(77, 184, 232, 0.4);
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.15),
                0 8px 24px rgba(77, 184, 232, 0.3);
    color: #fff;
    text-decoration: none;
}

.pd-btn-primary:active {
    transform: translateY(0);
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.1),
                0 4px 12px rgba(77, 184, 232, 0.2);
}

.pd-btn-secondary {
    display: inline-block;
    padding: 0.8rem 2rem;
    font-family: 'Roboto', sans-serif;
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: #fff;
    background: rgba(27, 58, 92, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(58, 159, 208, 0.2);
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--pd-transition);
    text-decoration: none;
    position: relative;
    overflow: hidden;
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.08),
                0 4px 12px rgba(27, 58, 92, 0.15);
}

.pd-btn-secondary::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg,
                rgba(58, 159, 208, 0.12) 0%,
                rgba(27, 58, 92, 0.06) 100%);
    border-radius: 12px;
    pointer-events: none;
    transition: opacity var(--pd-transition);
}

.pd-btn-secondary:hover {
    transform: translateY(-2px);
    background: rgba(27, 58, 92, 0.22);
    border-color: rgba(58, 159, 208, 0.35);
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.12),
                0 8px 24px rgba(27, 58, 92, 0.3);
    color: #fff;
    text-decoration: none;
}

.pd-btn-secondary:active {
    transform: translateY(0);
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.08),
                0 4px 12px rgba(27, 58, 92, 0.2);
}

.pd-btn-outline {
    display: inline-block;
    padding: 0.75rem 2rem;
    font-family: 'Roboto', sans-serif;
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: #fff;
    background: transparent;
    border: 1.5px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--pd-transition);
    text-decoration: none;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.pd-btn-outline:hover {
    border-color: var(--pd-accent);
    color: var(--pd-accent);
    background: rgba(77, 184, 232, 0.08);
    box-shadow: 0 4px 12px rgba(77, 184, 232, 0.2);
    text-decoration: none;
}

/* --------------------------------------------------------------------------
   5. Hero Section (homepage)
   -------------------------------------------------------------------------- */
.pd-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.pd-hero-bg {
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    background-size: cover;
    background-position: center;
    z-index: 0;
}

.pd-hero-overlay {
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    background: rgba(15, 34, 56, 0.78);
    z-index: 1;
}

.pd-hero #particles-js {
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    z-index: 2;
}

.pd-hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    padding: 6rem 1rem 3rem;
}

.pd-hero h1 {
    font-family: 'Roboto', sans-serif;
    font-weight: 900;
    font-size: 3.5rem;
    line-height: 1.15;
    color: #fff;
    margin-bottom: 1.25rem;
}

.pd-hero .pd-hero-sub {
    font-size: 1.3rem;
    color: var(--pd-text-bright);
    max-width: 700px;
    margin: 0 auto 2.5rem;
    line-height: 1.6;
}

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

.pd-hero-ctas .pd-btn-primary,
.pd-hero-ctas .pd-btn-secondary {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Button rows – gleiche Höhe für nebeneinander stehende Buttons */
.pd-btn-row {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    align-items: stretch;
}

.pd-btn-row .pd-btn-primary,
.pd-btn-row .pd-btn-secondary,
.pd-btn-row .pd-btn-outline {
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (max-width: 767.98px) {
    .pd-hero h1 {
        font-size: 1.75rem;
    }
    .pd-hero .pd-hero-sub {
        font-size: 1rem;
    }

    /* Silbentrennung auf Mobilgeräten für kompakteren Fließtext */
    .pd-section p,
    .pd-section li,
    .pd-parallax-section p,
    .pd-glass-card p {
        hyphens: auto;
        -webkit-hyphens: auto;
        overflow-wrap: break-word;
        word-break: break-word;
    }
}

/* --------------------------------------------------------------------------
   6. Trust Bar
   -------------------------------------------------------------------------- */
.pd-logo-bar {
    background: rgba(15, 34, 56, 0.6);
    border-top: 1px solid var(--pd-glass-border);
    border-bottom: 1px solid var(--pd-glass-border);
    padding: 1.25rem 0;
}

.pd-logo-bar-img {
    max-height: 48px;
    width: auto;
    opacity: 0.9;
}

@media (max-width: 575.98px) {
    .pd-logo-bar-img {
        max-height: 36px;
    }
}

/* --------------------------------------------------------------------------
   7. Section Helpers
   -------------------------------------------------------------------------- */
.pd-section {
    padding: 6rem 0;
}

.pd-section-dark {
    background: var(--pd-bg-dark);
}

.pd-section-darker {
    background: var(--pd-bg-darker);
}

.pd-section-heading {
    text-align: center;
    margin-bottom: 3.5rem;
}

.pd-section-heading h2 {
    font-family: 'Roboto', sans-serif;
    font-weight: 900;
    font-size: 2.5rem;
    color: #fff;
    margin-bottom: 1rem;
}

.pd-section-heading p {
    font-size: 1.1rem;
    color: var(--pd-text-muted);
    max-width: 650px;
    margin: 0 auto;
    line-height: 1.7;
}

@media (max-width: 767.98px) {
    .pd-section {
        padding: 4rem 0;
    }
    .pd-section-heading h2 {
        font-size: 1.9rem;
    }
}

/* --------------------------------------------------------------------------
   8. Parallax Section
   -------------------------------------------------------------------------- */
.pd-parallax-section {
    position: relative;
    padding: 6rem 0;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.pd-parallax-section .pd-parallax-overlay {
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    background: rgba(15, 34, 56, 0.80);
}

.pd-parallax-section .container {
    position: relative;
    z-index: 2;
}

@media (max-width: 767.98px) {
    .pd-parallax-section {
        background-attachment: scroll;
    }
}

.pd-parallax-section--short {
    padding: 0;
    min-height: 280px;
}

@media (max-width: 767.98px) {
    .pd-parallax-section--short {
        min-height: 180px;
    }
}

/* --------------------------------------------------------------------------
   9. Reveal Animations
   -------------------------------------------------------------------------- */
.pd-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.pd-reveal.pd-visible {
    opacity: 1;
    transform: translateY(0);
}

.pd-reveal-delay-1 { transition-delay: 0.1s; }
.pd-reveal-delay-2 { transition-delay: 0.2s; }
.pd-reveal-delay-3 { transition-delay: 0.3s; }
.pd-reveal-delay-4 { transition-delay: 0.4s; }

/* --------------------------------------------------------------------------
   10. Stripe Tagline
   -------------------------------------------------------------------------- */
.pd-stripe-tagline {
    padding: 3rem 0;
    background: linear-gradient(135deg, rgba(27, 58, 92, 0.25), rgba(77, 184, 232, 0.08));
    border-top: 1px solid var(--pd-glass-border);
    border-bottom: 1px solid var(--pd-glass-border);
    text-align: center;
}

.pd-stripe-tagline h3 {
    font-family: 'Roboto', sans-serif;
    font-weight: 700;
    font-size: 1.6rem;
    color: #fff;
    margin: 0;
    letter-spacing: 0.5px;
}

/* --------------------------------------------------------------------------
   11. Contact Form
   -------------------------------------------------------------------------- */
.pd-contact-form .form-control {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: #fff;
    padding: 0.85rem 1.1rem;
    font-size: 0.95rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.pd-contact-form .form-control:focus {
    background: rgba(255, 255, 255, 0.07);
    border-color: var(--pd-accent);
    box-shadow: 0 0 0 3px rgba(77, 184, 232, 0.15);
    color: #fff;
    outline: none;
}

.pd-contact-form .form-control::placeholder {
    color: rgba(255, 255, 255, 0.35);
}

.pd-contact-form label {
    font-weight: 600;
    color: var(--pd-text-bright);
    margin-bottom: 0.4rem;
    font-size: 0.9rem;
}

.pd-contact-form select.form-control {
    appearance: none;
    -webkit-appearance: none;
    color-scheme: dark;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='rgba(255,255,255,0.5)' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
    cursor: pointer;
}

.pd-contact-form select.form-control option {
    background: #152d4a;
    color: #fff;
}

.pd-contact-form textarea.form-control {
    min-height: 140px;
    resize: vertical;
}

/* Honeypot field */
.pd-hp-field {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    width: 0;
    overflow: hidden;
}

/* Form status messages */
.pd-form-status {
    padding: 1rem;
    border-radius: 8px;
    margin-top: 1rem;
    display: none;
}

.pd-form-status.pd-success {
    display: block;
    background: rgba(0, 200, 83, 0.1);
    border: 1px solid rgba(0, 200, 83, 0.3);
    color: #6fcf97;
}

.pd-form-status.pd-error {
    display: block;
    background: rgba(255, 71, 87, 0.1);
    border: 1px solid rgba(255, 71, 87, 0.3);
    color: #ff7979;
}

/* --------------------------------------------------------------------------
   12. Footer
   -------------------------------------------------------------------------- */
.pd-footer {
    background: var(--pd-bg-darker);
    border-top: 1px solid var(--pd-glass-border);
    padding: 4rem 0 2rem;
}

.pd-footer h5 {
    font-family: 'Roboto', sans-serif;
    font-weight: 700;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #fff;
    margin-bottom: 1.25rem;
}

.pd-footer ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.pd-footer ul li {
    margin-bottom: 0.5rem;
}

.pd-footer ul li a {
    color: var(--pd-text-muted);
    font-size: 0.9rem;
    text-decoration: none;
    transition: color 0.2s ease;
}

.pd-footer ul li a:hover {
    color: var(--pd-accent);
}

.pd-footer .pd-footer-claim {
    color: var(--pd-text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
}

.pd-footer-bottom {
    border-top: 1px solid var(--pd-glass-border);
    padding-top: 1.5rem;
    margin-top: 2.5rem;
}

.pd-footer-bottom p {
    color: rgba(255, 255, 255, 0.35);
    font-size: 0.8rem;
    margin: 0;
}

.pd-footer .pd-social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--pd-text-muted);
    font-size: 1rem;
    transition: all 0.3s ease;
    text-decoration: none;
}

.pd-footer .pd-social-link:hover {
    border-color: var(--pd-accent);
    color: var(--pd-accent);
    transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   13. Credential Badges
   -------------------------------------------------------------------------- */
.pd-badge {
    display: inline-block;
    padding: 0.35rem 0.85rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--pd-text-muted);
    margin: 0.25rem;
}

.pd-badge-accent {
    border-color: rgba(77, 184, 232, 0.4);
    color: var(--pd-accent);
}

.pd-badge-silver {
    border-color: rgba(184, 184, 184, 0.3);
    color: var(--pd-silver);
}

/* --------------------------------------------------------------------------
   14. Project / Product Cards
   -------------------------------------------------------------------------- */
.pd-project-card {
    background: var(--pd-glass-bg);
    border: 1px solid var(--pd-glass-border);
    border-radius: 16px;
    overflow: hidden;
    transition: transform var(--pd-transition), box-shadow var(--pd-transition);
}

.pd-project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.pd-project-card .pd-project-body {
    padding: 2rem;
}

.pd-project-card h4 {
    font-family: 'Roboto', sans-serif;
    font-weight: 700;
    color: #fff;
    margin-bottom: 0.75rem;
}

.pd-project-card p {
    color: var(--pd-text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

.pd-project-links a {
    color: var(--pd-accent);
    font-size: 0.85rem;
    font-weight: 600;
    margin-right: 1rem;
    text-decoration: none;
    transition: color 0.2s;
}

.pd-project-links a:hover {
    color: #fff;
}

/* --------------------------------------------------------------------------
   15. Blog Placeholder Cards
   -------------------------------------------------------------------------- */
.pd-blog-card {
    background: var(--pd-glass-bg);
    border: 1px solid var(--pd-glass-border);
    border-radius: 16px;
    padding: 2rem;
    height: 100%;
}

.pd-blog-card .pd-blog-tag {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 600;
    color: var(--pd-accent);
    margin-bottom: 0.75rem;
}

.pd-blog-card h5 {
    font-family: 'Roboto', sans-serif;
    font-weight: 700;
    color: #fff;
    margin-bottom: 0.75rem;
}

.pd-blog-card p {
    color: var(--pd-text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* --------------------------------------------------------------------------
   16. Impressum inline
   -------------------------------------------------------------------------- */
.pd-impressum p {
    color: var(--pd-text-bright);
    font-size: 0.92rem;
    line-height: 1.8;
    margin-bottom: 0.3rem;
}

.pd-impressum i {
    color: var(--pd-accent);
    margin-right: 0.5rem;
    font-size: 1rem;
    vertical-align: middle;
}

/* --------------------------------------------------------------------------
   17. CEO / About section
   -------------------------------------------------------------------------- */
.pd-ceo-image {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid rgba(77, 184, 232, 0.3);
}

/* --------------------------------------------------------------------------
   18. Seminar Cards (mini)
   -------------------------------------------------------------------------- */
.pd-seminar-card {
    background: var(--pd-glass-bg);
    border: 1px solid var(--pd-glass-border);
    border-radius: 16px;
    padding: 2rem;
    height: 100%;
    transition: transform var(--pd-transition), box-shadow var(--pd-transition);
}

.pd-seminar-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.pd-seminar-card h5 {
    font-family: 'Roboto', sans-serif;
    font-weight: 700;
    color: #fff;
    margin-bottom: 0.75rem;
}

.pd-seminar-card p {
    color: var(--pd-text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* --------------------------------------------------------------------------
   19. Back to top (updated)
   -------------------------------------------------------------------------- */
.pd-back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(15, 34, 56, 0.8);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid var(--pd-glass-border);
    color: #fff;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 9000;
}

.pd-back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.pd-back-to-top:hover {
    background: var(--pd-accent-dark);
    border-color: var(--pd-accent-dark);
    color: #fff;
    text-decoration: none;
}

/* --------------------------------------------------------------------------
   19b. Floating Contact Button
   -------------------------------------------------------------------------- */
.pd-floating-contact {
    position: fixed;
    bottom: 2rem;
    right: 5rem;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(77, 184, 232, 0.2);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(77, 184, 232, 0.3);
    color: #fff;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 9000;
}

.pd-floating-contact.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.pd-floating-contact:hover {
    background: rgba(77, 184, 232, 0.35);
    border-color: rgba(77, 184, 232, 0.5);
    color: #fff;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(77, 184, 232, 0.3);
}

/* --------------------------------------------------------------------------
   20. Utility: list-style
   -------------------------------------------------------------------------- */
.pd-list {
    list-style: none;
    padding: 0;
}

.pd-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.6rem;
    color: var(--pd-text-bright);
    font-size: 0.95rem;
    line-height: 1.6;
}

.pd-list li::before {
    content: '\f00c';
    font-family: 'FontAwesome';
    position: absolute;
    left: 0;
    color: var(--pd-accent);
    font-size: 0.8rem;
}

.pd-list-accent li::before {
    color: var(--pd-accent-dark);
}

/* ==========================================================================
   21. LOGO-BRANDING: Subtle Design-Elemente aus dem Logo
   ========================================================================== */

/* --------------------------------------------------------------------------
   21a. Circuit-Board Pattern (Leiterbahnen aus dem blauen Tropfen)
   Dezenter Hintergrund in pd-section-darker Sektionen
   -------------------------------------------------------------------------- */
:root {
    --pd-circuit-pattern: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100' viewBox='0 0 100 100'%3E%3Cg fill='none' stroke='%234DB8E8' stroke-width='0.5'%3E%3Cpath d='M10 10h20v0M30 10v20M30 30h20M50 30v-20M50 10h10M70 10v30M70 40h20M90 40v20'/%3E%3Cpath d='M10 50h30M40 50v20M40 70h20M60 70v20M60 90h30'/%3E%3Cpath d='M10 80h10M20 80v10M20 90h10'/%3E%3C/g%3E%3Cg fill='%234DB8E8'%3E%3Ccircle cx='10' cy='10' r='1.5'/%3E%3Ccircle cx='30' cy='10' r='1.5'/%3E%3Ccircle cx='30' cy='30' r='1.5'/%3E%3Ccircle cx='50' cy='30' r='1.5'/%3E%3Ccircle cx='50' cy='10' r='1.5'/%3E%3Ccircle cx='70' cy='10' r='1.5'/%3E%3Ccircle cx='70' cy='40' r='1.5'/%3E%3Ccircle cx='90' cy='40' r='1.5'/%3E%3Ccircle cx='90' cy='60' r='1.5'/%3E%3Ccircle cx='10' cy='50' r='1.5'/%3E%3Ccircle cx='40' cy='50' r='1.5'/%3E%3Ccircle cx='40' cy='70' r='1.5'/%3E%3Ccircle cx='60' cy='70' r='1.5'/%3E%3Ccircle cx='60' cy='90' r='1.5'/%3E%3Ccircle cx='90' cy='90' r='1.5'/%3E%3Ccircle cx='10' cy='80' r='1.5'/%3E%3Ccircle cx='20' cy='80' r='1.5'/%3E%3Ccircle cx='20' cy='90' r='1.5'/%3E%3C/g%3E%3C/svg%3E");
    --pd-drop-polygon: polygon(50% 0%, 80% 25%, 93% 50%, 93% 65%, 85% 82%, 65% 95%, 50% 100%, 35% 95%, 15% 82%, 7% 65%, 7% 50%, 20% 25%);
}

.pd-section-darker {
    position: relative;
    overflow: hidden;
}

.pd-section-darker::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 400px;
    height: 400px;
    background-image: var(--pd-circuit-pattern);
    background-repeat: repeat;
    background-size: 100px 100px;
    opacity: 0.04;
    pointer-events: none;
    mask-image: radial-gradient(ellipse at bottom right, black 0%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at bottom right, black 0%, transparent 70%);
}

/* --------------------------------------------------------------------------
   21b. S-Kurven Section Divider (Silberne Welle des Logos)
   -------------------------------------------------------------------------- */
.pd-section-divider-wave {
    position: relative;
    height: 80px;
    overflow: hidden;
    background: transparent;
    margin-top: -1px;
}

.pd-section-divider-wave svg {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.pd-section-divider-wave--to-dark {
    background: var(--pd-bg-darker);
}

.pd-section-divider-wave--to-darker {
    background: var(--pd-bg-dark);
}

/* --------------------------------------------------------------------------
   21c. Tropfen-Clip-Path (CEO-Bild + Glow-Wrapper)
   -------------------------------------------------------------------------- */
.pd-ceo-image-wrapper {
    position: relative;
    display: inline-block;
}

.pd-ceo-image-wrapper::before {
    content: '';
    position: absolute;
    inset: -4px;
    clip-path: var(--pd-drop-polygon);
    background: linear-gradient(135deg, rgba(184,184,184,0.3), rgba(77,184,232,0.3));
    z-index: 0;
}

.pd-ceo-image.pd-drop-shape {
    width: 180px;
    height: 220px;
    border-radius: 0;
    clip-path: var(--pd-drop-polygon);
    object-fit: cover;
    border: none;
    position: relative;
    z-index: 1;
}

/* --------------------------------------------------------------------------
   21d. Vertikale Circuit-Trace Linie (Leiterbahn als Seitenakzent)
   Wird als ::before auf Parallax-Sektionen eingesetzt
   -------------------------------------------------------------------------- */
.pd-parallax-section {
    position: relative;
}

.pd-parallax-section::before {
    content: '';
    position: absolute;
    top: 10%;
    left: 40px;
    width: 6px;
    height: 80%;
    z-index: 3;
    opacity: 0.12;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='6' height='400' viewBox='0 0 6 400'%3E%3Cline x1='3' y1='0' x2='3' y2='60' stroke='%234DB8E8' stroke-width='2'/%3E%3Ccircle cx='3' cy='60' r='3' fill='%234DB8E8'/%3E%3Cline x1='3' y1='60' x2='3' y2='100' stroke='%234DB8E8' stroke-width='1' stroke-dasharray='4 6'/%3E%3Ccircle cx='3' cy='100' r='2' fill='%234DB8E8'/%3E%3Cline x1='3' y1='100' x2='3' y2='180' stroke='%234DB8E8' stroke-width='2'/%3E%3Ccircle cx='3' cy='180' r='3' fill='%234DB8E8'/%3E%3Cline x1='3' y1='180' x2='3' y2='230' stroke='%234DB8E8' stroke-width='1' stroke-dasharray='4 6'/%3E%3Ccircle cx='3' cy='230' r='2' fill='%234DB8E8'/%3E%3Cline x1='3' y1='230' x2='3' y2='320' stroke='%234DB8E8' stroke-width='2'/%3E%3Ccircle cx='3' cy='320' r='3' fill='%234DB8E8'/%3E%3Cline x1='3' y1='320' x2='3' y2='370' stroke='%234DB8E8' stroke-width='1' stroke-dasharray='4 6'/%3E%3Ccircle cx='3' cy='370' r='2' fill='%234DB8E8'/%3E%3Cline x1='3' y1='370' x2='3' y2='400' stroke='%234DB8E8' stroke-width='2'/%3E%3C/svg%3E");
    background-repeat: repeat-y;
    background-size: 6px 400px;
    mask-image: linear-gradient(to bottom, transparent 0%, black 15%, black 85%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 15%, black 85%, transparent 100%);
}

@media (max-width: 991.98px) {
    .pd-parallax-section::before {
        left: 12px;
        opacity: 0.08;
    }
}

@media (max-width: 575.98px) {
    .pd-parallax-section::before {
        display: none;
    }
}

/* --------------------------------------------------------------------------
   21e. Flammen-Wasserzeichen im Hero (Logo-Silhouette, extrem dezent)
   -------------------------------------------------------------------------- */
.pd-hero::before {
    content: '';
    position: absolute;
    bottom: -5%;
    right: -2%;
    width: 500px;
    height: 600px;
    z-index: 1;
    opacity: 0.03;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 280' fill='none'%3E%3Cpath d='M70,280 C30,220 90,160 50,100 C30,65 50,20 80,5 C60,30 45,65 65,100 C95,155 40,215 75,275 Z' fill='%23B8B8B8'/%3E%3Cpath d='M120,10 C125,10 170,80 170,140 C170,180 148,210 120,210 C92,210 70,180 70,140 C70,80 115,10 120,10 Z' fill='%234DB8E8'/%3E%3Cg stroke='%23ffffff' stroke-width='0.8' opacity='0.5'%3E%3Cpath d='M100,80 h20 v15 h10'/%3E%3Cpath d='M110,110 h15 v20'/%3E%3Cpath d='M95,140 h30 v15'/%3E%3Cpath d='M130,100 v25 h-10'/%3E%3Ccircle cx='100' cy='80' r='2' fill='%23ffffff'/%3E%3Ccircle cx='120' cy='80' r='2' fill='%23ffffff'/%3E%3Ccircle cx='130' cy='95' r='2' fill='%23ffffff'/%3E%3Ccircle cx='110' cy='110' r='2' fill='%23ffffff'/%3E%3Ccircle cx='125' cy='130' r='2' fill='%23ffffff'/%3E%3Ccircle cx='95' cy='140' r='2' fill='%23ffffff'/%3E%3C/g%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-size: contain;
    background-position: center;
}