/* ═══════════════════════════════════════════════════════════════
   Unibouw AI Chatbot — Full Page Design
   Brand: Navy #003042 + Orange #F07E2A (from unibouw.eu logo)
   ═══════════════════════════════════════════════════════════════ */

/* ─── Reset & Variables ─────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --ub-primary:       #003042;
    --ub-primary-dark:  #002231;
    --ub-primary-light: #004a66;
    --ub-primary-soft:  rgba(0, 48, 66, 0.08);
    --ub-accent:        #ffffff;
    --ub-accent-dark:   #e2e8f0;
    --ub-accent-soft:   rgba(0, 48, 66, 0.06);
    --ub-accent-glow:   rgba(0, 48, 66, 0.15);
    --ub-accent-border: rgba(0, 48, 66, 0.18);

    --ub-white:         #ffffff;
    --ub-bg:            #f7f8fa;
    --ub-bg-alt:        #eef0f3;
    --ub-card:          #ffffff;
    --ub-text:          #1a2332;
    --ub-text-mid:      #4a5568;
    --ub-text-muted:    #718096;
    --ub-text-light:    #a0aec0;
    --ub-border:        #e2e8f0;
    --ub-border-mid:    #cbd5e0;

    --shadow-xs:   0 1px 3px rgba(0,48,66,0.06);
    --shadow-sm:   0 2px 8px rgba(0,48,66,0.10);
    --shadow-md:   0 4px 20px rgba(0,48,66,0.14);
    --shadow-lg:   0 8px 32px rgba(0,48,66,0.18);

    --radius-sm:   8px;
    --radius-md:   12px;
    --radius-lg:   18px;
    --radius-xl:   24px;
    --radius-full: 9999px;

    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --header-h: 64px;
}

html, body { height: 100%; }

body {
    font-family: var(--font);
    background: var(--ub-bg);
    color: var(--ub-text);
    min-height: 100vh;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ─── Header ────────────────────────────────────────────────── */
.header {
    background: linear-gradient(135deg, var(--ub-primary) 0%, var(--ub-primary-dark) 100%);
    padding: 0 32px;
    height: var(--header-h);
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 12px rgba(0,48,66,0.3);
}

.header-content {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo { display: flex; align-items: center; text-decoration: none; flex-shrink: 0; }
.logo-img { height: 28px; width: auto; }
.logo-text {
    font-size: 22px;
    font-weight: 800;
    color: var(--ub-white);
    letter-spacing: -0.5px;
}
.logo-text span { color: var(--ub-accent); }

.header-right {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: var(--radius-full);
    font-size: 12px;
    color: rgba(255,255,255,0.85);
    font-weight: 600;
}

.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #4ade80;
    animation: pulse-dot 2s ease-in-out infinite;
    flex-shrink: 0;
}

@keyframes pulse-dot {
    0%, 100% { box-shadow: 0 0 0 0 rgba(74,222,128,0.5); }
    50%       { box-shadow: 0 0 0 5px rgba(74,222,128,0); }
}

.btn-icon {
    width: 36px;
    height: 36px;
    border: 1px solid rgba(255,255,255,0.15);
    background: transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    color: rgba(255,255,255,0.65);
}
.btn-icon:hover {
    border-color: rgba(255,255,255,0.5);
    color: #ffffff;
    background: rgba(255,255,255,0.1);
}

/* ─── Main Layout ───────────────────────────────────────────── */
.main-container {
    display: flex;
    height: calc(100vh - var(--header-h));
    max-width: 1200px;
    margin: 0 auto;
}

.chat-wrapper { flex: 1; display: flex; justify-content: center; align-items: stretch; }

.chat-panel {
    width: 100%;
    max-width: 760px;
    display: flex;
    flex-direction: column;
    background: var(--ub-white);
    border-left: 1px solid var(--ub-border);
    border-right: 1px solid var(--ub-border);
}

/* ─── Chat Messages ─────────────────────────────────────────── */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 32px 28px;
    display: flex;
    flex-direction: column;
    gap: 22px;
    scroll-behavior: smooth;
    background: var(--ub-bg);
}
.chat-messages::-webkit-scrollbar { width: 5px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--ub-border); border-radius: 3px; }

/* ─── Messages ──────────────────────────────────────────────── */
.message {
    display: flex;
    gap: 12px;
    max-width: 82%;
    animation: msg-in 0.32s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.message.user { align-self: flex-end; flex-direction: row-reverse; }
.message.bot { align-self: flex-start; }

.message-avatar {
    width: 38px; height: 38px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    font-size: 16px; font-weight: 700;
}

.bot-avatar {
    background: var(--ub-primary);
    color: var(--ub-white);
    box-shadow: 0 2px 8px rgba(0,48,66,0.25);
    font-size: 14px;
}

.message.user .message-avatar {
    background: var(--ub-bg-alt);
    color: var(--ub-primary);
}

.message-content { display: flex; flex-direction: column; gap: 4px; min-width: 0; }

.message-bubble {
    padding: 14px 18px;
    line-height: 1.65;
    font-size: 14.5px;
    word-break: break-word;
}

.message.bot .message-bubble {
    background: var(--ub-white);
    color: var(--ub-text);
    border-radius: 4px var(--radius-lg) var(--radius-lg) var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--ub-border);
}

.message.user .message-bubble {
    background: var(--ub-primary);
    color: var(--ub-white);
    border-radius: var(--radius-lg) 4px var(--radius-lg) var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.message-bubble p { margin-bottom: 8px; }
.message-bubble p:last-child { margin-bottom: 0; }

.welcome-title { font-size: 17px; font-weight: 700; color: var(--ub-text) !important; margin-bottom: 4px !important; }
.welcome-disclaimer { font-size: 12.5px; color: var(--ub-text-muted); }

.message.bot .message-bubble strong { color: var(--ub-primary); font-weight: 700; }
.message.bot .message-bubble a {
    color: var(--ub-primary);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 2px solid var(--ub-primary-light);
    transition: all 0.2s;
}
.message.bot .message-bubble a:hover {
    background: var(--ub-accent-soft);
    border-radius: 2px;
    padding: 0 2px;
}

/* Markdown list support */
.message-bubble ul, .message-bubble ol { margin: 4px 0 8px 20px; }
.message-bubble li { margin-bottom: 4px; }

/* ─── Quick Actions ─────────────────────────────────────────── */
.quick-actions { display: flex; flex-direction: column; gap: 8px; margin-top: 16px; }

.quick-action-btn {
    display: flex; align-items: center; gap: 14px;
    padding: 13px 16px;
    border: 1.5px solid var(--ub-border);
    background: var(--ub-white);
    color: var(--ub-text);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: var(--font);
    text-align: left;
    transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
    width: 100%;
}
.quick-action-btn:hover {
    border-color: var(--ub-primary);
    background: var(--ub-primary);
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}
.quick-action-btn:hover .qa-text strong { color: #ffffff; }
.quick-action-btn:hover .qa-text small { color: rgba(255,255,255,0.65); }

.qa-icon {
    font-size: 20px; flex-shrink: 0;
    width: 40px; height: 40px;
    display: flex; align-items: center; justify-content: center;
    background: var(--ub-bg);
    border-radius: var(--radius-sm);
    transition: background 0.2s;
}
.quick-action-btn:hover .qa-icon { background: rgba(255,255,255,0.15); color: #ffffff; }

.qa-text { display: flex; flex-direction: column; gap: 2px; }
.qa-text strong { font-size: 14px; font-weight: 700; color: var(--ub-text); transition: color 0.2s; }
.qa-text small { font-size: 12px; color: var(--ub-text-muted); transition: color 0.2s; }

.qa-arrow {
    margin-left: auto; color: var(--ub-text-light);
    transition: color 0.2s, transform 0.2s; flex-shrink: 0;
}
.quick-action-btn:hover .qa-arrow { color: #ffffff; transform: translateX(3px); }

/* ─── Quick-Reply Buttons ──────────────────────────────────── */
.reply-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.reply-btn {
    padding: 8px 16px;
    background: var(--ub-white);
    border: 1.5px solid var(--ub-border);
    border-radius: var(--radius-full);
    font-family: var(--font);
    font-size: 13px;
    font-weight: 600;
    color: var(--ub-text-mid);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    white-space: nowrap;
}
.reply-btn:hover {
    background: var(--ub-primary);
    color: #ffffff;
    border-color: var(--ub-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}
.reply-btn:active { transform: scale(0.96); }
.reply-btn.selected {
    background: var(--ub-primary);
    color: var(--ub-white);
    border-color: var(--ub-primary);
}
.reply-btn:disabled {
    opacity: 0.5;
    cursor: default;
    pointer-events: none;
}

/* ─── Feedback Buttons ─────────────────────────────────────── */
.feedback-bar {
    display: flex;
    gap: 4px;
    margin-top: 4px;
    padding-left: 2px;
}

.feedback-btn {
    background: none;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    padding: 3px 6px;
    font-size: 13px;
    cursor: pointer;
    opacity: 0.3;
    transition: all 0.2s;
    line-height: 1;
}
.feedback-btn:hover {
    opacity: 1;
    background: var(--ub-bg-alt);
    border-color: var(--ub-border);
}
.feedback-btn.selected {
    opacity: 1;
    background: var(--ub-accent-soft);
    border-color: var(--ub-accent-border);
}
.feedback-btn.dimmed {
    opacity: 0.15;
    cursor: default;
    pointer-events: none;
}
.feedback-btn:disabled { cursor: default; }

/* ─── Typing Indicator ──────────────────────────────────────── */
.typing-indicator { display: flex; align-items: center; gap: 12px; padding: 0 28px 16px; }

.typing-dots {
    display: flex; align-items: center; gap: 5px;
    padding: 14px 18px;
    background: var(--ub-white);
    border-radius: 4px var(--radius-lg) var(--radius-lg) var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--ub-border);
}
.typing-dots span {
    width: 8px; height: 8px;
    background: var(--ub-primary);
    border-radius: 50%;
    animation: typing-bounce 1.4s infinite ease-in-out;
}
.typing-dots span:nth-child(1) { animation-delay: 0s; }
.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing-bounce {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.35; }
    30%           { transform: translateY(-8px); opacity: 1; }
}

/* ─── Suggestion Chips ──────────────────────────────────────── */
.suggestion-chips {
    display: flex; flex-wrap: wrap; gap: 8px;
    margin-bottom: 12px; justify-content: center;
    animation: msg-in 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.suggestion-chips.hidden { display: none; }

.suggestion-chip {
    flex: 1 1 auto;
    padding: 8px 16px;
    background: var(--ub-white);
    border: 1.5px solid var(--ub-border);
    border-radius: var(--radius-full);
    font-family: var(--font);
    font-size: 13px; font-weight: 600;
    color: var(--ub-text-mid);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    white-space: nowrap; text-align: center;
}
.suggestion-chip:hover {
    background: var(--ub-primary);
    color: #ffffff;
    border-color: var(--ub-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}
.suggestion-chip:active { transform: scale(0.96); }

/* ─── Chat Input ────────────────────────────────────────────── */
.chat-input-area {
    padding: 16px 28px 18px;
    background: var(--ub-white);
    border-top: 1px solid var(--ub-border);
}

.input-wrapper {
    display: flex; align-items: center; gap: 0;
    background: var(--ub-bg);
    border: 1.5px solid var(--ub-border);
    border-radius: var(--radius-full);
    padding: 5px 5px 5px 8px;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.input-wrapper:focus-within {
    border-color: var(--ub-primary);
    box-shadow: 0 0 0 3px rgba(0,48,66,0.12);
    background: var(--ub-white);
}

#chat-input {
    flex: 1; padding: 9px 0;
    background: transparent; border: none;
    color: var(--ub-text); font-size: 14.5px;
    font-family: var(--font); outline: none;
}
#chat-input::placeholder { color: var(--ub-text-light); }

.btn-reset {
    width: 36px; height: 36px; min-width: 36px;
    border: none; background: transparent;
    color: var(--ub-text-light); border-radius: 50%;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: all 0.2s;
    opacity: 0; pointer-events: none;
}
.btn-reset.visible { opacity: 1; pointer-events: auto; }
.btn-reset:hover { color: var(--ub-primary); background: var(--ub-bg-alt); }

.btn-send {
    width: 42px; height: 42px;
    border: none;
    background: var(--ub-primary);
    color: #ffffff;
    border-radius: 50%;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.2s;
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}
.btn-send:hover { background: var(--ub-primary-dark); transform: scale(1.06); }
.btn-send:active { transform: scale(0.94); }

.input-footer {
    text-align: center; font-size: 11.5px;
    color: var(--ub-text-light); margin-top: 10px;
}
.input-footer a {
    color: var(--ub-primary);
    text-decoration: none; font-weight: 600;
    border-bottom: 1px solid var(--ub-primary-light);
}

/* ─── Responsive ────────────────────────────────────────────── */
@media (max-width: 768px) {
    .header { padding: 0 16px; height: 56px; }
    .main-container { height: calc(100vh - 56px); }
    .chat-panel { max-width: 100%; border: none; }
    .chat-messages { padding: 20px 16px; }
    .chat-input-area { padding: 12px 16px 14px; }
    .message { max-width: 90%; }
}

@media (max-width: 480px) {
    .status-badge { display: none; }
    .chat-messages { padding: 16px 12px; gap: 16px; }
    .message-bubble { padding: 12px 14px; font-size: 14px; }
    .suggestion-chip { font-size: 12px; padding: 6px 12px; }
}