/* =========================================
   IT3M.de - Corporate Minimalismus (Light)
   ========================================= */

:root {
    --bg-main: #0A0F1C;
    --bg-white: rgba(20, 30, 48, 0.4);
    --primary: #ffffff;
    --primary-light: #e0e0e0;
    --accent: #00f2ea;
    --accent-hover: #00ffe8;
    --text-main: #e0e6ed;
    --text-muted: #8e9bac;
    --border-light: rgba(0, 242, 234, 0.15);
    --transition: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', sans-serif; }

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main { flex: 1; margin-top: 70px; }

/* Tabs (SPA) */
.tab-content { display: none; animation: fadeIn 0.4s ease-in-out; }
.tab-content.active { display: block; }
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.container { width: 90%; max-width: 1200px; margin: 0 auto; }
.section-padding { padding: 80px 0; }
.mt-4 { margin-top: 2rem; }

/* Navbar */
.navbar {
    position: fixed; top: 0; width: 100%;
    background: rgba(10, 15, 28, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 242, 234, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
    z-index: 1000; padding: 15px 0;
}
.nav-container { display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; align-items: center; gap: 15px; }
.logo-text { font-size: 1.5rem; font-weight: 700; color: var(--primary); letter-spacing: 0.5px; }

.nav-links { display: flex; gap: 25px; align-items: center; }
.nav-links a { color: var(--text-main); text-decoration: none; font-weight: 500; font-size: 0.95rem; transition: var(--transition); }
.nav-links a:hover { color: var(--accent); }

/* Globale Live-Site Buttons (Neon Cyan, runder Call-To-Action) */
.nav-links .btn-primary, .btn-primary, .btn-primary-corp, .btn-primary-tech, .cookie-btn-primary {
    background: #00f2ea !important; color: #0B1020 !important; padding: 14px 35px; border-radius: 50px !important;
    font-weight: 700; border: none; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; justify-content: center;
    box-shadow: 0 0 18px rgba(0, 242, 234, 0.4); transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1); font-size: 1.05rem; gap: 8px;
}
.nav-links .btn-primary { padding: 10px 24px; font-size: 0.95rem; }
.nav-links .btn-primary:hover, .btn-primary:hover, .btn-primary-corp:hover, .btn-primary-tech:hover, .cookie-btn-primary:hover {
    background: #00ffe8 !important; transform: translateY(-3px) scale(1.03); box-shadow: 0 0 30px rgba(0, 242, 234, 0.8);
    color: #0B1020 !important; text-decoration: none;
}

.nav-links .btn-outline, .btn-secondary, .btn-secondary-corp, .cookie-btn-secondary {
    background: rgba(0, 242, 234, 0.05) !important; color: #00f2ea !important; padding: 14px 35px; border-radius: 50px !important;
    font-weight: 600; border: 1px solid rgba(0, 242, 234, 0.5); cursor: pointer; text-decoration: none;
    display: inline-flex; align-items: center; justify-content: center; transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1); font-size: 1.05rem; gap: 8px;
}
.nav-links .btn-outline { padding: 10px 24px; font-size: 0.95rem; }
.nav-links .btn-outline:hover, .btn-secondary:hover, .btn-secondary-corp:hover, .cookie-btn-secondary:hover {
    background: rgba(0, 242, 234, 0.15) !important; transform: translateY(-3px); box-shadow: 0 0 20px rgba(0, 242, 234, 0.3);
    color: #00f2ea !important; text-decoration: none;
}

.full-width { width: 100%; }

/* Typography */
h1, h2, h3, h4 { color: var(--primary); font-weight: 700; line-height: 1.3; }

/* Sections */
.bg-white { background: transparent; }
.bg-light { background: transparent; }
.bg-primary { background: transparent; }
.text-white { color: #fff; }
.text-center { text-align: center; }

.section-header { text-align: center; margin-bottom: 50px; }
.section-header h2 { font-size: 2.2rem; margin-bottom: 10px; }
.section-header p { font-size: 1.1rem; color: var(--text-muted); }

/* Hero Corporate (Dark Mode with Animation) */
.hero-corporate {
    background-color: transparent;
    position: relative;
    overflow: hidden;
    padding: 100px 0 80px 0;
}
.hero-corporate-content { display: flex; align-items: center; gap: 50px; position: relative; z-index: 2; }
.hero-text-corp { flex: 1; }
.hero-text-corp h1 { font-size: 2.8rem; margin-bottom: 20px; color: #FFFFFF; }
.hero-text-corp p { font-size: 1.15rem; color: rgba(255,255,255,0.8); margin-bottom: 30px; }
.hero-buttons-corp { display: flex; gap: 15px; flex-wrap: wrap; }
.hero-image-corp { flex: 1; padding: 20px; position: relative; z-index: 2; }



/* Grid Services / References / Steps */
.services-grid-corp, .references-grid, .steps-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px;
}
.service-card-corp, .reference-card, .step-card {
    background: rgba(16, 24, 40, 0.6); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); padding: 30px; border-radius: 8px;
    border: 1px solid var(--border-light); transition: var(--transition);
    box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}
.service-card-corp:hover { transform: translateY(-5px); box-shadow: 0 10px 20px rgba(0,0,0,0.05); border-color: var(--accent); }
.service-icon { font-size: 2rem; color: var(--accent); margin-bottom: 20px; }
.service-card-corp h3 { font-size: 1.3rem; margin-bottom: 15px; }
.service-card-corp p { font-size: 0.95rem; color: var(--text-muted); }

.reference-card h4 { font-size: 1.2rem; margin-bottom: 15px; border-bottom: 2px solid var(--bg-main); padding-bottom: 10px; }
.reference-card p { font-size: 0.95rem; margin-bottom: 10px; }

.step-card { text-align: center; }
.step-num {
    width: 60px; height: 60px; background: rgba(0, 207, 255, 0.15); color: #00CFFF; border: 1px solid rgba(0, 207, 255, 0.3);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; font-weight: bold; margin: 0 auto 20px;
}

/* Split Layout */
.split-layout { display: flex; align-items: center; gap: 50px; }
.split-text { flex: 1; }
.split-image { flex: 1; }
.benefits-list { list-style: none; margin-top: 25px; }
.benefits-list li { margin-bottom: 15px; font-size: 1.05rem; display: flex; align-items: flex-start; gap: 15px; }
.benefits-list li i { color: var(--accent); margin-top: 5px; }

/* Target Groups */
.target-groups { display: flex; justify-content: center; gap: 30px; flex-wrap: wrap; margin-top: 40px; }
.target-item { background: rgba(0, 242, 234, 0.05); padding: 30px; border-radius: 8px; flex: 1; min-width: 250px; border: 1px solid rgba(255,255,255,0.2); }
.target-item i { font-size: 2.5rem; color: #fff; margin-bottom: 15px; }
.target-item h4 { color: #fff; font-size: 1.3rem; margin-bottom: 10px; }
.target-item p { color: rgba(255,255,255,0.8); font-size: 0.95rem; }

/* Footer */
.footer { background: rgba(10, 15, 28, 0.7); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-top: 1px solid rgba(255,255,255,0.05); color: #fff; padding: 60px 0 20px; border-top: none; }
.footer-content-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-col h4 { color: #fff; font-size: 1.1rem; margin-bottom: 20px; }
.footer-col p { color: rgba(255,255,255,0.7); font-size: 0.95rem; margin-bottom: 10px; }
.footer-col a { display: block; color: rgba(255,255,255,0.7); text-decoration: none; margin-bottom: 10px; font-size: 0.95rem; transition: var(--transition); }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); margin-top: 40px; padding-top: 20px; text-align: center; font-size: 0.85rem; color: rgba(255,255,255,0.5); }

/* Adapted Form Theme */
.content-card-corp, .auth-card, .booking-panel {
    background: rgba(16, 24, 40, 0.6); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); padding: 40px; border-radius: 8px;
    border: 1px solid var(--border-light); box-shadow: 0 4px 15px rgba(0,0,0,0.02);
}
.auth-panels { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.custom-form .form-group { margin-bottom: 20px; }
.custom-form label { display: block; margin-bottom: 8px; font-weight: 600; color: var(--text-main); }
.custom-form input, .custom-form select, .custom-form textarea {
    width: 100%; padding: 12px; background: rgba(255,255,255,0.05); border: 1px solid var(--border-light);
    border-radius: 4px; color: var(--text-main); outline: none; transition: var(--transition); font-size: 1rem;
}
.custom-form input:focus, .custom-form select:focus, .custom-form textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(0,102,204,0.1); }
.sub-links { margin-top: 15px; text-align: center; }
.sub-links a { color: var(--accent); text-decoration: none; font-size: 0.9rem; }
.sub-links a:hover { text-decoration: underline; }

/* Messages Alerts */
.messages { position: fixed; top: 90px; left: 50%; transform: translateX(-50%); z-index: 1001; width: 90%; max-width: 600px; }
.alert { padding: 15px 20px; margin-bottom: 10px; border-radius: 4px; background: var(--bg-white); border-left: 4px solid var(--accent); box-shadow: 0 4px 15px rgba(0,0,0,0.1); }
.alert-success { border-left-color: #28a745; }
.alert-error { border-left-color: #dc3545; }

/* Cookie Banner */
.cookie-banner { position: fixed; bottom: 0; left: 0; width: 100%; background: var(--bg-white); border-top: 1px solid var(--border-light); padding: 14px 18px; z-index: 9999; box-shadow: 0 -4px 15px rgba(0,0,0,0.05); }
.cookie-banner-inner { width: 90%; max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; }
.cookie-text { font-size: 0.95rem; }
.cookie-actions { display: flex; gap: 10px; }
.cookie-btn-primary { background: var(--primary); color: #fff; padding: 8px 16px; border-radius: 4px; border: none; cursor: pointer; }
.cookie-btn-secondary { background: var(--bg-white); color: var(--text-main); padding: 8px 16px; border-radius: 4px; border: 1px solid var(--border-light); cursor: pointer; }
.cookie-btn-link { color: var(--accent); padding: 8px 16px; border: none; background: transparent; cursor: pointer; text-decoration: none;}

/* Mobile Menu & Responsiveness */
.menu-toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; padding: 5px; }
.menu-toggle span { display: block; width: 26px; height: 3px; background: var(--primary); border-radius: 2px; }

@media (max-width: 900px) {
    .menu-toggle { display: flex; }
    .nav-links {
        display: none; position: absolute; top: 100%; right: 0; width: 260px;
        background: var(--bg-white); border: 1px solid var(--border-light); padding: 15px;
        flex-direction: column; box-shadow: 0 10px 30px rgba(0,0,0,0.1); border-radius: 4px;
    }
    .nav-links.active { display: flex; }
    .hero-corporate-content, .split-layout { flex-direction: column; text-align: center; }
    .hero-text-corp h1 { font-size: 2.2rem; }
    .benefits-list li { justify-content: center; text-align: left; }
    .auth-panels { grid-template-columns: 1fr; }
    .footer-content-grid { grid-template-columns: 1fr; gap: 30px; text-align: center; }
}

ul.errorlist { color: #dc3545; list-style: none; font-size: 0.85em; margin-bottom: 5px; margin-top: 5px; }