/* ==========================================================================
   AI-ADU European Horizon - Shared Design System & Layout Styles
   ========================================================================== */

/* Self-hosted Plus Jakarta Sans (Variable 400..800) - Zero External Calls, 100% GDPR & LG München Compliant */
@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url('/assets/fonts/plus-jakarta-sans-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url('/assets/fonts/plus-jakarta-sans-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

:root {
    /* Color Palette - Clean Nordic & European Blue */
    --bg-body: #F8FAFC;
    --bg-card: #FFFFFF;
    --bg-surface: #F1F5F9;
    --bg-surface-hover: #E2E8F0;
    
    --text-primary: #0F172A;
    --text-secondary: #334155;
    --text-muted: #64748B;
    --text-light: #94A3B8;
    
    --eu-blue: #003399;
    --eu-blue-dark: #002266;
    --eu-blue-light: #EFF6FF;
    --eu-blue-subtle: rgba(0, 51, 153, 0.08);
    
    --eu-gold: #D97706;
    --eu-gold-light: #FEF3C7;
    
    --ai-cyan: #0284C7;
    --ai-cyan-light: #E0F2FE;
    --ai-indigo: #4F46E5;
    --ai-indigo-light: #EEF2FF;
    --ai-emerald: #059669;
    --ai-emerald-light: #D1FAE5;
    --ai-amber: #D97706;
    --ai-amber-light: #FEF3C7;
    
    --border-light: #E2E8F0;
    --border-medium: #CBD5E1;
    --border-strong: #94A3B8;
    --border-blue: #BFDBFE;
    
    --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
    --shadow-card: 0 4px 6px -1px rgba(15, 23, 42, 0.06), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
    --shadow-card-hover: 0 12px 24px -4px rgba(15, 23, 42, 0.1), 0 4px 8px -2px rgba(0, 51, 153, 0.06);
    --shadow-sticky: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
    
    --font-main: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    
    --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-body);
    color: var(--text-primary);
    font-family: var(--font-main);
    min-height: 100vh;
    line-height: 1.6;
    background-image: 
        radial-gradient(circle at 12% 8%, rgba(0, 51, 153, 0.035) 0%, transparent 45%),
        radial-gradient(circle at 88% 14%, rgba(2, 132, 199, 0.04) 0%, transparent 45%),
        linear-gradient(to bottom, #F8FAFC 0%, #F1F5F9 100%);
    background-attachment: fixed;
    overflow-x: hidden;
}

/* Container */
.container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

/* ==========================================================================
   Top EU Banner (Non-Sticky)
   ========================================================================== */
.top-banner {
    background: #FFFFFF;
    border-bottom: 1px solid var(--border-light);
    padding: 10px 0;
    font-size: 12.5px;
    color: var(--text-secondary);
}

.top-banner-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.eu-badge-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.top-controls-row {
    display: flex;
    align-items: center;
    gap: 16px;
}

.lang-switcher-wrap {
    display: flex;
    gap: 3px;
    background: var(--bg-surface);
    padding: 3px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
}

.lang-btn {
    border: none;
    background: transparent;
    color: var(--text-secondary);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 11.5px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}

.lang-btn.active, .lang-btn:hover {
    background: #FFFFFF;
    color: var(--eu-blue);
    box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   Static/Sticky Desktop Navbar & Mobile Header
   ========================================================================== */
.navbar-wrap {
    position: sticky;
    top: 12px;
    z-index: 100;
    padding: 0 24px;
    margin: 12px 0 24px;
}

.navbar {
    max-width: 1180px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid var(--border-light);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: var(--shadow-sticky);
    border-radius: 999px;
    padding: 8px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.brand-block {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.brand-logo-img {
    height: 52px;
    max-width: 180px;
    width: auto;
    border-radius: 8px;
    background: #FFFFFF;
    padding: 4px 10px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    object-fit: contain;
}

.eu-co-funded-img {
    height: 38px;
    width: auto;
    border-radius: 4px;
}

/* Desktop Navigation Menu (Clear, Static, No horizontal scroll) */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 8px 14px;
    border-radius: 999px;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--eu-blue);
    background: var(--eu-blue-light);
}

.nav-link.active {
    color: var(--eu-blue);
    background: var(--eu-blue-light);
    font-weight: 700;
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--eu-blue);
    color: #FFFFFF;
    text-decoration: none;
    font-size: 13px;
    font-weight: 700;
    padding: 9px 18px;
    border-radius: 999px;
    box-shadow: 0 3px 10px rgba(0, 51, 153, 0.2);
    transition: var(--transition);
    white-space: nowrap;
}

.nav-cta:hover {
    background: var(--eu-blue-dark);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(0, 51, 153, 0.25);
}

/* ==========================================================================
   Modern Vector Icon Badges & Hero Grid
   ========================================================================== */
.icon-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    margin-bottom: 14px;
    transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s ease;
}

.icon-badge svg {
    width: 24px;
    height: 24px;
}

.icon-badge-blue {
    background: var(--eu-blue-light);
    color: var(--eu-blue);
    border: 1px solid rgba(0, 51, 153, 0.12);
}

.icon-badge-indigo {
    background: var(--ai-indigo-light);
    color: var(--ai-indigo);
    border: 1px solid rgba(79, 70, 229, 0.12);
}

.icon-badge-emerald {
    background: var(--ai-emerald-light);
    color: var(--ai-emerald);
    border: 1px solid rgba(5, 150, 105, 0.12);
}

.icon-badge-gold {
    background: var(--eu-gold-light);
    color: #B45309;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.icon-badge-cyan {
    background: #E0F2FE;
    color: #0284C7;
    border: 1px solid rgba(2, 132, 199, 0.15);
}

.card:hover .icon-badge {
    transform: translateY(-2px) scale(1.05);
}

.hero-pillars-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--border-light);
}

.hero-pillar-card {
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 16px 18px;
    display: flex;
    gap: 14px;
    align-items: flex-start;
    transition: var(--transition);
}

.hero-pillar-card:hover {
    background: #FFFFFF;
    border-color: var(--border-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.hero-pillar-icon {
    width: 36px;
    height: 36px;
    min-width: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-pillar-icon svg {
    width: 20px;
    height: 20px;
}

.badge-dev {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: #FEF3C7;
    color: #92400E;
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 3px 8px;
    border-radius: 999px;
    border: 1px solid #FDE68A;
}

/* Mobile Hamburger Button */
.burger-btn {
    display: none;
    background: #FFFFFF;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 8px;
    cursor: pointer;
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
}

/* Mobile Navigation Drawer */
.mobile-drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.mobile-drawer-overlay.open {
    opacity: 1;
    visibility: visible;
}

.mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 300px;
    max-width: 85%;
    background: #FFFFFF;
    z-index: 1000;
    padding: 24px;
    display: flex;
    flex-direction: column;
    box-shadow: -10px 0 30px rgba(0,0,0,0.15);
    transform: translateX(100%);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-drawer-overlay.open .mobile-drawer {
    transform: translateX(0);
}

.drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-light);
}

.drawer-close-btn {
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 18px;
    color: var(--text-secondary);
}

.drawer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.drawer-link {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    padding: 12px 14px;
    border-radius: var(--radius-md);
    background: var(--bg-surface);
    transition: var(--transition);
}

.drawer-link.active, .drawer-link:hover {
    background: var(--eu-blue-light);
    color: var(--eu-blue);
}

/* ==========================================================================
   Typography & Common UI Components
   ========================================================================== */
.page-header {
    margin: 20px 0 32px;
    text-align: center;
}

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: var(--eu-blue-light);
    border: 1px solid var(--border-blue);
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    color: var(--eu-blue);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--eu-blue);
    border-radius: 50%;
    animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.85); }
}

.page-title {
    font-size: 36px;
    font-weight: 800;
    line-height: 1.25;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.page-title span {
    color: var(--eu-blue);
}

.page-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 780px;
    margin: 0 auto;
    line-height: 1.6;
}

/* White Content Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-card);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-card-hover);
    border-color: var(--border-medium);
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--eu-blue);
    color: #FFFFFF;
    font-size: 14px;
    font-weight: 700;
    padding: 12px 22px;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0, 51, 153, 0.2);
    transition: var(--transition);
}

.btn-primary:hover {
    background: var(--eu-blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 51, 153, 0.25);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: #FFFFFF;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    padding: 12px 22px;
    border-radius: 999px;
    border: 1px solid var(--border-light);
    cursor: pointer;
    text-decoration: none;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--bg-surface);
    border-color: var(--border-medium);
    transform: translateY(-1px);
}

/* ==========================================================================
   SURVEY FORM SPECIFIC STYLES (Accurate, Top-to-Bottom, Time & Progress)
   ========================================================================== */
.survey-header-card {
    background: #FFFFFF;
    border: 1px solid var(--border-blue);
    border-radius: var(--radius-xl);
    padding: 32px;
    margin-bottom: 28px;
    box-shadow: var(--shadow-card);
}

.survey-badge-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 16px;
}

.time-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--eu-gold-light);
    color: var(--eu-gold);
    font-size: 13px;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 999px;
    border: 1px solid rgba(217, 119, 6, 0.25);
}

/* Sticky Survey Progress Bar */
.sticky-progress-wrap {
    position: sticky;
    top: 75px;
    z-index: 90;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid var(--border-light);
    backdrop-filter: blur(12px);
    border-radius: var(--radius-md);
    padding: 12px 20px;
    margin-bottom: 28px;
    box-shadow: var(--shadow-sticky);
}

.progress-info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.progress-track {
    width: 100%;
    height: 10px;
    background: var(--bg-surface);
    border-radius: 999px;
    overflow: hidden;
    border: 1px solid var(--border-light);
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--eu-blue), var(--ai-cyan));
    border-radius: 999px;
    transition: width 0.3s ease;
}

/* Question Cards */
.question-card {
    background: #FFFFFF;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-card);
    transition: var(--transition);
}

.question-card.answered {
    border-left: 4px solid var(--ai-emerald);
}

.q-number-pill {
    display: inline-block;
    background: var(--eu-blue-light);
    color: var(--eu-blue);
    font-size: 12px;
    font-weight: 800;
    padding: 4px 10px;
    border-radius: 6px;
    margin-bottom: 8px;
}

.q-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
    line-height: 1.45;
}

.q-type-hint {
    font-size: 12.5px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

/* Option Items (High contrast radio & checkboxes) */
.options-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.option-item {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-body);
    border: 1.5px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
}

.option-item:hover {
    background: #FFFFFF;
    border-color: var(--border-blue);
}

.option-item.selected {
    background: var(--eu-blue-light);
    border-color: var(--eu-blue);
    color: var(--eu-blue);
    font-weight: 600;
}

/* DISTINCT RADIO CIRCLE */
.option-item input[type="radio"] {
    appearance: none;
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    border: 2px solid var(--border-strong);
    border-radius: 50%;
    margin: 0;
    display: grid;
    place-content: center;
    flex-shrink: 0;
    background: #FFFFFF;
    transition: var(--transition);
}

.option-item input[type="radio"]::before {
    content: "";
    width: 10px;
    height: 10px;
    border-radius: 50%;
    transform: scale(0);
    transition: 0.15s transform ease-in-out;
    background-color: var(--eu-blue);
}

.option-item input[type="radio"]:checked {
    border-color: var(--eu-blue);
    background: #FFFFFF;
}

.option-item input[type="radio"]:checked::before {
    transform: scale(1);
}

/* DISTINCT CHECKBOX SQUARE */
.option-item input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    border: 2px solid var(--border-strong);
    border-radius: 6px;
    margin: 0;
    display: grid;
    place-content: center;
    flex-shrink: 0;
    background: #FFFFFF;
    transition: var(--transition);
}

.option-item input[type="checkbox"]::before {
    content: "✓";
    font-size: 14px;
    font-weight: 900;
    color: #FFFFFF;
    transform: scale(0);
    transition: 0.15s transform ease-in-out;
}

.option-item input[type="checkbox"]:checked {
    border-color: var(--eu-blue);
    background-color: var(--eu-blue);
}

.option-item input[type="checkbox"]:checked::before {
    transform: scale(1);
}

.option-label-text {
    font-size: 14px;
    color: var(--text-primary);
    flex: 1;
}

/* Text / Textarea Input */
.survey-input {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--border-light);
    border-radius: var(--radius-md);
    font-family: var(--font-main);
    font-size: 14px;
    color: var(--text-primary);
    background: #FFFFFF;
    transition: var(--transition);
}

.survey-input:focus {
    outline: none;
    border-color: var(--eu-blue);
    box-shadow: 0 0 0 3px rgba(0, 51, 153, 0.12);
}

/* Footer Disclaimer */
.footer {
    margin: 60px 0 40px;
    padding: 32px;
    background: #FFFFFF;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-card);
    border-radius: var(--radius-lg);
    text-align: center;
}

.footer-eu-img {
    height: 58px;
    width: auto;
    margin-bottom: 16px;
    border-radius: 6px;
    box-shadow: var(--shadow-sm);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--text-primary);
    color: #FFFFFF;
    padding: 12px 20px;
    border-radius: 999px;
    font-size: 13.5px;
    font-weight: 600;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    display: flex;
    align-items: center;
    gap: 8px;
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
    z-index: 10000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 20px;
}

.modal-overlay.open {
    display: flex;
}

.modal-box {
    background: #FFFFFF;
    border-radius: var(--radius-lg);
    padding: 32px;
    max-width: 580px;
    width: 100%;
    box-shadow: 0 20px 50px rgba(0,0,0,0.25);
    border: 1px solid var(--border-light);
}

/* Responsive Media Queries */
@media (max-width: 960px) {
    .nav-menu {
        display: none;
    }
    .burger-btn {
        display: flex;
    }
    .page-title {
        font-size: 28px;
    }
}

@media (max-width: 640px) {
    .navbar {
        padding: 6px 14px;
    }
    .brand-logo-img {
        height: 44px;
        max-width: 140px;
    }
    .eu-co-funded-img {
        height: 30px;
    }
    .page-title {
        font-size: 24px;
    }
    .top-banner-inner {
        flex-direction: column;
        align-items: flex-start;
    }
    .nav-cta {
        display: none;
    }
}