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

/* ============ CSS VARIABLES (BRANDING) ============ */
:root {
    --primary: #05215A;
    --secondary: #053F97;
    --accent: #0A7FFF;
    --background: #FFFFFF;
    --dark: #0a1432;
    --text: #333333;
    --text-light: #666666;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --border-radius: 12px;
}

html, body {
    width: 100%;
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--dark);
    color: #fff;
    overflow: hidden;
}

/* Neural Network Canvas */
#neuralNetwork {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

/* Views */
.view {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.view.active {
    opacity: 1;
    visibility: visible;
}

/* ============ HEADER WITH LOGO (GLASMORPHISM - MEHR TRANSPARENZ) ============ */
.header {
    padding: 20px 30px 10px 30px;
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 100;
    flex-shrink: 0;
    
    /* Glasmorphism Effekt - TRANSPARENTER */
    background: rgba(10, 20, 50, 0.3);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(5, 33, 90, 0.15);
    
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

#header-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.logo-container {
    flex-shrink: 0;
}

.logo-container img {
    height: 50px;
    width: auto;
    border-radius: var(--border-radius);
}

.company-logo {
    height: 50px;
    width: auto;
    border-radius: var(--border-radius);
}

.company-logo-full {
    display: block;
}

.company-logo-icon {
    display: none;
}


.header h1 {
    font-size: 1.1em;
    font-weight: 300;
    letter-spacing: 2px;
    background: linear-gradient(135deg, var(--background) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 10px 0 0 0;
}

.header .tagline {
    font-size: 0.8em;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 1px;
    margin-top: 5px;
}

/* ============ CHAT VIEW ============ */
#chatView {
    display: flex;
    flex-direction: column;
    height: 100%;
    width: 100%;
}

.icon-btn {
    position: absolute;
    top: 20px;
    right: 30px;
    background: none;
    border: none;
    font-size: 1.8em;
    cursor: pointer;
    transition: transform 0.3s;
    padding: 8px;
}

.icon-btn:hover {
    transform: scale(1.2);
}

.admin-link {
    position: absolute;
    top: 20px;
    right: 30px;
    background: linear-gradient(135deg, rgba(10, 127, 255, 0.1) 0%, rgba(5, 63, 151, 0.1) 100%);
    border: 1px solid rgba(10, 127, 255, 0.3);
    font-size: 1.8em;
    cursor: pointer;
    transition: all 0.3s;
    padding: 8px 12px;
    border-radius: var(--border-radius);
}

.admin-link:hover {
    transform: scale(1.15);
    background: linear-gradient(135deg, rgba(10, 127, 255, 0.2) 0%, rgba(5, 63, 151, 0.2) 100%);
    border-color: rgba(10, 127, 255, 0.5);
}

.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 20px;
    overflow: visible;  /* ← ÄNDERE VON "hidden" ZU "visible" */
    min-height: 0;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 10px;
    padding-top: 10px;  /* ← FÜGE PADDING-TOP HINZU damit Content nicht unter Header verschwindet */
    margin-bottom: 0px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.message {
    display: flex;
    animation: slideIn 0.4s ease-out;
    flex-shrink: 0;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-text {
    padding: 16px 20px;
    border-radius: var(--border-radius);
    line-height: 1.6;
    max-width: 85%;
    backdrop-filter: blur(10px);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.user-message {
    justify-content: flex-end;
}

.user-message .message-text {
    background: rgba(10, 127, 255, 0.3);
    border: 1px solid rgba(10, 127, 255, 0.5);
    color: #e8f0fe;
}

.bot-message {
    justify-content: flex-start;
}

.bot-message .message-text {
    background: rgba(5, 33, 90, 0.15);
    border: 1px solid rgba(5, 33, 90, 0.2);
    color: #d4d4d4;
}

.bot-message h1,
.bot-message h2,
.bot-message h3 {
    margin: 12px 0 8px 0;
    color: #80b0ff;
}

.bot-message h1 {
    font-size: 1.4em;
}

.bot-message h2 {
    font-size: 1.2em;
}

.bot-message h3 {
    font-size: 1.1em;
}

.bot-message strong {
    color: #e8f0fe;
    font-weight: 700;
}

.bot-message em {
    color: #b8c5d6;
    font-style: italic;
}

/* ============ SEMINARKARTEN (PROPOSAL 1 - MINIMAL ELEGANT) ============ */

.seminar-card {
    background: rgba(5, 33, 90, 0.08);
    border: 1px solid rgba(10, 127, 255, 0.15);
    border-radius: 16px;
    padding: 24px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin: 10px;
    margin-bottom: 16px;
}

.seminar-card:hover {
    background: rgba(5, 33, 90, 0.12);
    border-color: rgba(10, 127, 255, 0.3);
    box-shadow: 0 12px 32px rgba(10, 127, 255, 0.15);
    transform: translateY(-4px);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
}

.card-title {
    font-size: 1.3em;
    font-weight: 700;
    color: #e8f0fe;
    flex: 1;
    line-height: 1.3;
}

.level-badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.75em;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
    flex-shrink: 0;
    border: 1px solid;
    transition: all 0.3s;
}

.level-badge.beginner {
    background: rgba(16, 185, 129, 0.2);
    color: #86efac;
    border-color: rgba(16, 185, 129, 0.3);
}

.level-badge.intermediate {
    background: rgba(59, 130, 246, 0.2);
    color: #93c5fd;
    border-color: rgba(59, 130, 246, 0.3);
}

.level-badge.advanced {
    background: rgba(168, 85, 247, 0.2);
    color: #d8b4fe;
    border-color: rgba(168, 85, 247, 0.3);
}

.card-description {
    font-size: 0.95em;
    color: #b8c5d6;
    line-height: 1.6;
    margin: 0;
}

.card-meta {
    display: flex;
    gap: 24px;
    padding: 12px 0;
    border-top: 1px solid rgba(10, 127, 255, 0.1);
    border-bottom: 1px solid rgba(10, 127, 255, 0.1);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.meta-icon {
    font-size: 1.2em;
}

.meta-value {
    color: #e8f0fe;
    font-weight: 600;
    font-size: 0.95em;
}

.card-topics {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.topic-tag {
    background: rgba(10, 127, 255, 0.15);
    color: #80b0ff;
    padding: 6px 12px;
    border-radius: 12px;
    font-size: 0.85em;
    font-weight: 500;
    border: 1px solid rgba(10, 127, 255, 0.2);
    transition: all 0.3s;
}

.seminar-card:hover .topic-tag {
    background: rgba(10, 127, 255, 0.25);
    border-color: rgba(10, 127, 255, 0.4);
}

.card-cta {
    background: linear-gradient(135deg, var(--accent) 0%, rgba(10, 127, 255, 0.8) 100%);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 10px;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
    align-self: flex-start;
    font-size: 0.95em;
    letter-spacing: 0.5px;
}

.card-cta:hover {
    transform: translateX(4px);
    box-shadow: 0 8px 20px rgba(10, 127, 255, 0.3);
}

.card-cta:active {
    transform: translateX(2px);
}

/* Responsive für Mobile */
@media (max-width: 768px) {
    .seminar-card {
        padding: 20px;
        gap: 14px;
    }

    .card-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .level-badge {
        align-self: flex-start;
    }

    .card-title {
        font-size: 1.15em;
    }

    .card-meta {
        gap: 16px;
    }

    .card-topics {
        gap: 6px;
    }

    .topic-tag {
        font-size: 0.8em;
        padding: 5px 10px;
    }
}

.input-area {
    padding: 0 20px;
    flex-shrink: 0;
    border-top: 1px solid rgba(5, 33, 90, 0.1);
}

.input-wrapper {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.text-input {
    flex: 1;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(5, 33, 90, 0.2);
    border-radius: var(--border-radius);
    padding: 12px 16px;
    color: #fff;
    font-family: inherit;
    font-size: 1em;
    resize: vertical;
    min-height: 50px;
    max-height: 120px;
    transition: all 0.3s;
}

.text-input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(5, 33, 90, 0.5);
    box-shadow: 0 0 20px rgba(5, 33, 90, 0.2);
}

.text-input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.send-btn {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border: none;
    border-radius: var(--border-radius);
    color: white;
    font-size: 1.2em;
    width: 50px;
    height: 50px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.send-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(5, 33, 90, 0.4);
}

.send-btn:active {
    transform: scale(0.95);
}

.controls {
    display: flex;
    gap: 20px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.controls label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9em;
    color: rgba(255, 255, 255, 0.7);
}

.number-input {
    width: 60px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(5, 33, 90, 0.2);
    border-radius: 4px;
    padding: 6px;
    color: #fff;
    text-align: center;
}

.error-msg {
    color: #ff6b6b;
    font-size: 0.9em;
    min-height: 20px;
    animation: slideIn 0.3s ease;
    display: none;
}

.error-msg.show {
    display: block;
}

/* ============ SCROLLBAR ============ */
.chat-messages::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: rgba(5, 33, 90, 0.4);
    border-radius: 4px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: rgba(5, 33, 90, 0.6);
}

/* ============ LOGIN SCREEN (ADMIN) ============ */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    width: 100%;
    height: 100%;
}

.login-box {
    background: rgba(20, 30, 60, 0.9);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(5, 33, 90, 0.3);
    border-radius: var(--border-radius);
    padding: 50px;
    max-width: 400px;
    width: 100%;
    text-align: center;
}

.login-box h2 {
    font-size: 2em;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-box p {
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 30px;
    font-size: 0.95em;
}

.login-group {
    margin-bottom: 15px;
}

.login-input {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(5, 33, 90, 0.2);
    border-radius: var(--border-radius);
    padding: 12px 16px;
    color: #fff;
    font-size: 1em;
    font-family: inherit;
    transition: all 0.3s;
}

.login-input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(5, 33, 90, 0.5);
    box-shadow: 0 0 15px rgba(5, 33, 90, 0.2);
}

.login-input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.login-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border: none;
    border-radius: var(--border-radius);
    padding: 12px 20px;
    color: white;
    font-weight: 600;
    font-size: 1em;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 20px;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(5, 33, 90, 0.3);
}

.login-btn:active {
    transform: translateY(0);
}

.login-error {
    color: #ef5350;
    font-size: 0.9em;
    margin-top: 15px;
    display: none;
}

.login-error.show {
    display: block;
}

/* ============ SETTINGS VIEW ============ */
#settingsView {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.settings-container {
    background: rgba(20, 30, 60, 0.8);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(5, 33, 90, 0.2);
    border-radius: var(--border-radius);
    padding: 50px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
}

.back-btn {
    background: none;
    border: none;
    color: var(--accent);
    font-size: 1em;
    cursor: pointer;
    margin-bottom: 20px;
    transition: all 0.3s;
}

.back-btn:hover {
    color: var(--secondary);
    transform: translateX(-5px);
}

.settings-container h2 {
    font-size: 1.8em;
    font-weight: 300;
    margin-bottom: 30px;
    text-align: center;
    letter-spacing: 1px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.settings-container h3 {
    font-size: 1.2em;
    margin-bottom: 15px;
    color: var(--accent);
}

.settings-container p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 15px;
    font-size: 0.95em;
}

.phase {
    margin-bottom: 30px;
}

.settings-group {
    margin-bottom: 20px;
}

.settings-group label {
    display: block;
    font-size: 0.9em;
    margin-bottom: 8px;
    color: rgba(255, 255, 255, 0.8);
}

.settings-input {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(5, 33, 90, 0.2);
    border-radius: var(--border-radius);
    padding: 12px;
    color: #fff;
    font-family: inherit;
    font-size: 0.95em;
    transition: all 0.3s;
    min-height: 100px;
}

.settings-input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(5, 33, 90, 0.5);
    box-shadow: 0 0 15px rgba(5, 33, 90, 0.2);
}

.settings-input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.settings-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.slider-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.slider {
    flex: 1;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    outline: none;
    -webkit-appearance: none;
    cursor: pointer;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    cursor: pointer;
    box-shadow: 0 0 10px rgba(5, 33, 90, 0.4);
}

.slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    cursor: pointer;
    border: none;
}

#sensitivityValue {
    min-width: 40px;
    text-align: right;
    color: var(--accent);
    font-weight: 600;
}

.settings-buttons {
    display: flex;
    gap: 10px;
    margin-top: 30px;
}

.settings-btn {
    flex: 1;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border: none;
    border-radius: var(--border-radius);
    padding: 12px 20px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.settings-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(5, 33, 90, 0.3);
}

.settings-btn.cancel {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(5, 33, 90, 0.3);
}

.status-msg {
    margin-top: 15px;
    padding: 12px;
    border-radius: var(--border-radius);
    text-align: center;
    font-size: 0.9em;
    animation: slideIn 0.3s ease;
}

.status-msg.success {
    background: rgba(16, 185, 129, 0.2);
    color: #81c784;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-msg.error {
    background: rgba(239, 68, 68, 0.2);
    color: #ef5350;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* ============ SEMINAR ITEMS ============ */
.seminar-item {
    background: linear-gradient(135deg, rgba(10, 127, 255, 0.1) 0%, rgba(5, 63, 151, 0.05) 100%);
    border-left: 4px solid var(--accent);
    border-radius: var(--border-radius);
    padding: 18px;
    margin: 18px 0;
    transition: all 0.3s ease;
}

.seminar-item:hover {
    background: linear-gradient(135deg, rgba(10, 127, 255, 0.15) 0%, rgba(5, 63, 151, 0.1) 100%);
    border-left-color: var(--secondary);
    box-shadow: 0 4px 12px rgba(5, 33, 90, 0.2);
}

.seminar-item strong {
    display: block;
    font-size: 1.1em;
    margin-bottom: 12px;
    color: #fff;
}

.seminar-level,
.seminar-duration,
.seminar-price,
.seminar-topics {
    font-size: 0.9em;
    margin: 8px 0;
    color: #bbb;
    line-height: 1.4;
}

.seminar-desc {
    margin-top: 12px;
    font-size: 0.95em;
    color: #aaa;
    line-height: 1.5;
    font-style: italic;
}

.seminar-link-btn {
    display: inline-block;
    margin-top: 14px;
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 0.95em;
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(5, 33, 90, 0.25);
    border: none;
}

.seminar-link-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(5, 33, 90, 0.35);
    background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
}

.seminar-link-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(5, 33, 90, 0.25);
}

/* ============ SEMINAR CARDS ============ */
.seminars-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 18px;
    margin: 20px 0;
}

.seminar-card {
    background: linear-gradient(135deg, rgba(10, 127, 255, 0.1) 0%, rgba(5, 63, 151, 0.05) 100%);
    border: 1px solid rgba(5, 33, 90, 0.2);
    border-radius: var(--border-radius);
    padding: 20px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    position: relative;
}

.seminar-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
}

.seminar-card:hover {
    background: linear-gradient(135deg, rgba(10, 127, 255, 0.15) 0%, rgba(5, 63, 151, 0.1) 100%);
    border-color: rgba(5, 33, 90, 0.4);
    box-shadow: 0 8px 24px rgba(5, 33, 90, 0.2);
    transform: translateY(-4px);
}

.seminar-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 14px;
}

.seminar-card-title {
    margin: 0;
    font-size: 1.25em;
    font-weight: 700;
    color: #fff;
    flex: 1;
    line-height: 1.3;
}

.seminar-card-level {
    display: inline-block;
    padding: 6px 12px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border-radius: var(--border-radius);
    font-size: 0.75em;
    font-weight: 600;
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.seminar-card-meta {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
    padding-bottom: 14px;
    border-bottom: 1px solid rgba(5, 33, 90, 0.1);
}

.seminar-card-meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9em;
    color: #bbb;
}

.seminar-card-icon {
    font-size: 1.2em;
    display: inline-block;
}

.seminar-card-text {
    font-weight: 500;
}

.seminar-card-description {
    margin: 0 0 12px 0;
    font-size: 0.95em;
    line-height: 1.5;
    color: #aaa;
}

.seminar-card-topics {
    margin-bottom: 14px;
    font-size: 0.85em;
    color: #999;
    line-height: 1.6;
}

.seminar-card-topics strong {
    color: #bbb;
    display: block;
    margin-bottom: 6px;
}

.seminar-card-button {
    display: block;
    width: 100%;
    padding: 12px 16px;
    margin-top: 12px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 0.95em;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
}

.seminar-card-button:hover {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
    box-shadow: 0 6px 20px rgba(5, 33, 90, 0.35);
    transform: translateY(-2px);
}

.seminar-card-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(5, 33, 90, 0.25);
}

/* ============ LOADING ANIMATION ============ */
.loading-message {
    animation: fadeIn 0.3s ease-in;
}

.loading-spinner {
    display: inline-flex;
    gap: 4px;
    align-items: center;
    margin-right: 8px;
}

.loading-spinner span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    animation: pulse 1.4s infinite;
}

.loading-spinner span:nth-child(2) {
    animation-delay: 0.2s;
}

.loading-spinner span:nth-child(3) {
    animation-delay: 0.4s;
}

.loading-text {
    color: #999;
    font-size: 14px;
    font-style: italic;
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.3;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.2);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
    .header h1 {
        font-size: 1.1em;
    }

    #header-content {
        flex-direction: column;
        gap: 10px;
    }

    .company-logo {
        height: 40px;
        width: auto;
    }

    .company-logo-full {
        display: block;
    }
    
    .company-logo-icon {
        display: none;
    }

    .message-text {
        max-width: 100%;
    }

    .settings-container {
        padding: 30px;
    }

    .settings-row {
        grid-template-columns: 1fr;
    }

    .icon-btn {
        top: 20px;
        right: 20px;
    }

    .input-area {
        padding: 0 20px;
    }

    .chat-container {
        padding: 15px;
    }

    .seminars-container {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .seminar-card {
        padding: 16px;
    }

    .seminar-card-title {
        font-size: 1.1em;
    }

    .seminar-card-meta {
        flex-direction: column;
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 12px 16px 6px 16px;
        gap: 10px;
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }

    .header h1 {
        font-size: 1.1em;
    }

    .company-logo {
        height: 32px;
        width: auto;
    }

    .logo-container img {
        height: 40px;
    }

    .company-logo-full {
        display: none;
    }
    
    .company-logo-icon {
        display: block;
        height: 32px;
        width: auto;
        margin: 10px auto;
        border-radius: var(--border-radius);
    }

    .seminar-item {
        padding: 14px;
        border-left-width: 3px;
    }

    .seminar-link-btn {
        width: 100%;
        text-align: center;
        padding: 14px 20px;
    }

    .seminar-card-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .seminar-card-level {
        width: 100%;
        text-align: center;
    }

    .seminar-card-button {
        padding: 14px 12px;
    }

    .settings-container {
        padding: 20px;
    }

    .login-box {
        padding: 30px;
    }
}