:root {
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --text-main: #0f172a;
    --text-muted: #475569;
    --accent: #87ceeb; /* Sky blue matching the logo */
    --accent-glow: rgba(135, 206, 235, 0.4);
    --accent-secondary: #111827; /* Near black matching the logo text */
    --border: #e2e8f0;
    --danger: #ef4444;
    --error: #ef4444;
    --success: #10b981;
    --warning: #f59e0b;
    --primary: #0f172a;
    --surface: #ffffff;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    min-height: 100vh;
}

/* Typography & Headers */
header {
    text-align: center;
    padding: 3rem 2rem 2rem 2rem;
    background: #ffffff;
    border-bottom: 8px solid var(--accent-secondary); /* Thick black border linking to the logo's bottom bar */
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

header img {
    max-width: 450px;
    display: block;
    margin: 0 auto 1.5rem auto;
    /* Removed drop shadow so the white background of the logo blends invisibly into the white header */
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin: 0;
    color: var(--accent-secondary);
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

p.subtitle {
    color: var(--text-muted);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 1rem auto;
    font-weight: 400;
}

/* Main Layout */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

/* Navigation */
nav {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
}

nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.2s ease;
}

nav a:hover, nav a.active {
    background: var(--accent);
    color: #ffffff;
}

/* Service Matrix Sections */
section {
    margin-bottom: 5rem;
}

h2.section-title {
    font-size: 2rem;
    color: var(--accent-secondary);
    border-bottom: 3px solid var(--accent);
    padding-bottom: 0.5rem;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.tier-specialist h2.section-title {
    color: var(--accent-secondary);
    border-bottom-color: var(--text-muted);
}

.grid-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .grid-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .grid-container {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    border-color: var(--accent);
}

.tier-specialist .card {
    background: #f1f5f9;
    border-color: #cbd5e1;
}

.tier-specialist .card:hover {
    border-color: var(--accent-secondary);
}

.card h3 {
    font-size: 1.4rem;
    color: var(--accent-secondary);
    margin-top: 0;
    margin-bottom: 1rem;
    font-weight: 700;
}

.card p {
    color: var(--text-muted);
    flex-grow: 1;
}

/* Badges */
.badge {
    display: inline-block;
    background: var(--accent);
    color: #ffffff;
    font-size: 0.75rem;
    padding: 0.3rem 0.8rem;
    border-radius: 9999px;
    text-transform: uppercase;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: 0.05em;
}

.badge.emergency { background: var(--danger); }
.badge.compliance { background: var(--warning); color: #fff; }
.badge.robotic { background: var(--text-muted); }

/* Knowledge Base Specifics */
dl {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

dt {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--accent-secondary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

dd {
    margin: 0;
    color: var(--text-muted);
    background: var(--bg-main);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--accent);
}

.protocol {
    margin-top: 1rem;
    font-size: 0.95rem;
    color: var(--accent-secondary);
    background: #e0f2fe; /* Light blue background for protocols */
    padding: 1rem;
    border-radius: 6px;
    font-weight: 600;
}

/* Footer */
footer {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-muted);
    background: #ffffff;
    border-top: 1px solid var(--border);
    margin-top: 4rem;
}

/* Ask Tyler Widget */
.ask-tyler-widget {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 9999;
}

.widget-button {
    width: 65px;
    height: 65px;
    border-radius: 50%;
    background: var(--accent-secondary); /* Black button */
    color: white;
    border: 3px solid #ffffff;
    cursor: pointer;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.widget-button:hover {
    transform: scale(1.1);
    background: var(--accent); /* Changes to sky blue on hover */
}

.widget-button svg {
    width: 32px;
    height: 32px;
    fill: currentColor;
}

.chat-box {
    position: absolute;
    bottom: 85px;
    right: 0;
    width: 380px;
    height: 520px;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.chat-box.active {
    opacity: 1;
    pointer-events: all;
    transform: translateY(0);
}

.chat-header {
    background: var(--accent-secondary);
    color: #ffffff;
    padding: 1.2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-header h4 {
    margin: 0;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-dot {
    width: 10px;
    height: 10px;
    background: var(--success);
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 10px var(--success);
}

.close-chat {
    background: none;
    border: none;
    color: rgba(255,255,255,0.7);
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
}

.close-chat:hover {
    color: #ffffff;
}

.chat-messages {
    flex-grow: 1;
    padding: 1.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    background: #f8fafc;
}

.message {
    max-width: 85%;
    padding: 1rem;
    border-radius: 12px;
    font-size: 0.95rem;
    line-height: 1.5;
    box-shadow: 0 2px 5px rgba(0,0,0,0.02);
}

.message.bot {
    background: #ffffff;
    color: var(--text-main);
    align-self: flex-start;
    border-bottom-left-radius: 2px;
    border: 1px solid var(--border);
}

.message.user {
    background: var(--accent);
    color: #ffffff;
    align-self: flex-end;
    border-bottom-right-radius: 2px;
}

.chat-input-area {
    padding: 1.2rem;
    background: #ffffff;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 0.8rem;
}

.chat-input-area input {
    flex-grow: 1;
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 0.8rem 1rem;
    color: var(--text-main);
    outline: none;
    font-family: inherit;
}

.chat-input-area input:focus {
    border-color: var(--accent);
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(135, 206, 235, 0.2);
}

.chat-input-area button {
    background: var(--accent-secondary);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    padding: 0 1.2rem;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.2s;
}

.chat-input-area button:hover {
    background: var(--accent);
}

.typing-indicator {
    display: none;
    align-self: flex-start;
    padding: 0.5rem 1rem;
    font-style: italic;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.typing-indicator.active {
    display: block;
}

/* Native Form Styling */
.intake-form-container {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 3rem;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .form-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-weight: 600;
    color: var(--accent-secondary);
    font-size: 0.95rem;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group select,
.form-group textarea {
    padding: 0.8rem 1rem;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    background: #f8fafc;
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-main);
    transition: all 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(125, 211, 252, 0.3);
    background: #ffffff;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.checkbox-group input[type="checkbox"] {
    width: 1.2rem;
    height: 1.2rem;
    accent-color: var(--accent);
    cursor: pointer;
}

.checkbox-group label {
    font-size: 0.95rem;
    color: var(--text-muted);
    cursor: pointer;
    font-weight: 400;
}

.submit-btn {
    background: var(--accent-secondary);
    color: #ffffff;
    font-weight: 700;
    font-size: 1.1rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
    margin-top: 2rem;
    width: 100%;
}

.submit-btn:hover {
    background: var(--accent);
    transform: translateY(-2px);
}

.submit-btn:disabled {
    background: #cbd5e1;
    cursor: not-allowed;
    transform: none;
}

.form-message {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 600;
    display: none;
}

.form-message.success {
    display: block;
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #10b981;
}

.form-message.error {
    display: block;
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #ef4444;
}

/* Dynamic Form Additions */
.hidden {
    display: none !important;
}

.autocomplete-wrapper {
    position: relative;
    width: 100%;
}

.autocomplete-list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 99;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 0 0 8px 8px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    max-height: 200px;
    overflow-y: auto;
    margin-top: 4px;
}

.autocomplete-item {
    padding: 0.8rem 1rem;
    cursor: pointer;
    border-bottom: 1px solid #f1f5f9;
    color: var(--text-main);
    transition: background 0.2s;
}

.autocomplete-item:last-child {
    border-bottom: none;
}

.autocomplete-item:hover {
    background: var(--bg-main);
    color: var(--accent-secondary);
    font-weight: 600;
}