/* ============================================
   DevsCave Wyceniarka Chat — Design System
   ============================================ */
:root {
    --color-bg-primary: #0F0F0F;
    --color-bg-secondary: #1A1A1A;
    --color-bg-tertiary: #242424;
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #B0B0B0;
    --color-text-tertiary: #808080;
    --color-accent: #00FF94;
    --color-accent-secondary: #00D4FF;
    --color-accent-gradient: linear-gradient(135deg, #00FF94 0%, #00D4FF 100%);
    --font-primary: 'Sora', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 40px rgba(0,255,148,0.3);
}

* { margin:0; padding:0; box-sizing:border-box; }
html { height:100%; }

body {
    font-family: var(--font-primary);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    height: 100%;
    overflow: hidden;
}

a { color:inherit; text-decoration:none; }

/* ============================================
   Navigation
   ============================================ */
.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(15,15,15,0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0.75rem var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo { display:inline-block; transition:var(--transition-fast); }
.nav-logo:hover { transform:scale(1.05); }
.logo-svg { height:28px; width:auto; color:var(--color-text-primary); transition:var(--transition-fast); }
.nav-logo:hover .logo-svg { color:var(--color-accent); }
.nav-links { display:flex; gap:var(--spacing-md); align-items:center; }

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}
.nav-link::after {
    content:''; position:absolute; bottom:-4px; left:0;
    width:0; height:2px;
    background: var(--color-accent-gradient);
    transition: var(--transition-fast);
}
.nav-link:hover::after { width:100%; }
.nav-link-active { color: var(--color-accent); }
.nav-link-active::after { width:100% !important; }

.nav-link-cta {
    padding: 0.4rem 1rem;
    background: var(--color-accent-gradient);
    border-radius: 6px;
    color: var(--color-bg-primary);
    font-weight: 600;
    font-size: 0.85rem;
}
.nav-link-cta::after { display:none; }
.nav-link-cta:hover { transform:translateY(-2px); box-shadow:var(--shadow-glow); }

.nav-toggle {
    display:none; flex-direction:column; gap:5px;
    background:none; border:none; cursor:pointer; padding:0.5rem;
}
.nav-toggle span { width:22px; height:2px; background:var(--color-text-primary); transition:var(--transition-fast); }

/* ============================================
   Chat Layout — Full Screen
   ============================================ */
.chat-section {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
}

.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
    min-height: 0; /* critical for flex children to shrink */
    overflow: hidden;
}

/* Chat Header */
.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    background: var(--color-bg-secondary);
}

.chat-header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.agent-avatar {
    width: 44px; height: 44px;
    border-radius: 12px;
    background: rgba(0,255,148,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    flex-shrink: 0;
}

.agent-avatar-pulse {
    position: absolute;
    bottom: -2px; right: -2px;
    width: 12px; height: 12px;
    background: var(--color-accent);
    border-radius: 50%;
    border: 2px solid var(--color-bg-secondary);
    animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
    0%,100% { box-shadow: 0 0 0 0 rgba(0,255,148,0.5); }
    50% { box-shadow: 0 0 0 4px rgba(0,255,148,0); }
}

.agent-name { font-weight: 700; font-size: 1rem; }
.agent-status { font-size: 0.8rem; color: var(--color-accent); font-family: var(--font-mono); }

.chat-reset-btn {
    width: 36px; height: 36px;
    border-radius: 8px;
    background: var(--color-bg-tertiary);
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--color-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}
.chat-reset-btn:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
}

/* Chat Messages */
.chat-messages {
    flex: 1 1 0;
    min-height: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    scroll-behavior: smooth;
}

.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 4px; }

/* Message Bubbles */
.message {
    display: flex;
    gap: 0.75rem;
    max-width: 85%;
    animation: messageIn 0.3s ease forwards;
}

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

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

.message-avatar {
    width: 32px; height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 0.8rem;
    font-weight: 700;
}

.message-ai .message-avatar {
    background: rgba(0,255,148,0.15);
    color: var(--color-accent);
}

.message-user .message-avatar {
    background: rgba(0,212,255,0.15);
    color: var(--color-accent-secondary);
}

.message-bubble {
    padding: 0.85rem 1.1rem;
    border-radius: 16px;
    font-size: 0.95rem;
    line-height: 1.6;
}

.message-ai .message-bubble {
    background: var(--color-bg-secondary);
    border: 1px solid rgba(255,255,255,0.05);
    border-top-left-radius: 4px;
}

.message-user .message-bubble {
    background: rgba(0,255,148,0.12);
    border: 1px solid rgba(0,255,148,0.2);
    border-top-right-radius: 4px;
}

/* Quick Replies / Suggestions */
.quick-replies {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.quick-reply-btn {
    padding: 0.5rem 1rem;
    background: var(--color-bg-tertiary);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 50px;
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.quick-reply-btn:hover {
    border-color: var(--color-accent);
    background: rgba(0,255,148,0.1);
    color: var(--color-accent);
    transform: translateY(-1px);
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 0 var(--spacing-md);
    padding-bottom: 0.5rem;
}

.typing-dot {
    width: 8px; height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    opacity: 0.4;
    animation: typingBounce 1.4s ease-in-out infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
    0%,60%,100% { transform:translateY(0); opacity:0.4; }
    30% { transform:translateY(-6px); opacity:1; }
}

/* Chat Input */
.chat-input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 0.75rem;
    padding: var(--spacing-sm) var(--spacing-md);
    padding-bottom: calc(var(--spacing-sm) + env(safe-area-inset-bottom, 0px));
    border-top: 1px solid rgba(255,255,255,0.05);
    background: var(--color-bg-secondary);
}

.chat-input {
    flex: 1;
    padding: 0.85rem 1rem;
    background: var(--color-bg-primary);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    line-height: 1.5;
    resize: none;
    max-height: 120px;
    transition: border-color 0.2s ease;
}

.chat-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(0,255,148,0.1);
}

.chat-input::placeholder { color: var(--color-text-tertiary); }

.chat-send-btn {
    width: 44px; height: 44px;
    border-radius: 12px;
    background: var(--color-accent-gradient);
    border: none;
    color: var(--color-bg-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.2s ease;
}

.chat-send-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.chat-send-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ============================================
   Estimate Panel (slide-in from right)
   ============================================ */
.estimate-panel {
    position: fixed;
    top: 0; right: 0;
    width: 480px;
    max-width: 90vw;
    height: 100vh;
    background: var(--color-bg-secondary);
    border-left: 1px solid rgba(255,255,255,0.05);
    z-index: 1100;
    display: flex;
    flex-direction: column;
    animation: panelSlideIn 0.4s ease;
    box-shadow: -8px 0 40px rgba(0,0,0,0.5);
}

@keyframes panelSlideIn {
    from { transform:translateX(100%); }
    to { transform:translateX(0); }
}

.estimate-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.estimate-panel-header h3 {
    font-size: 1.1rem;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.panel-close-btn {
    width: 36px; height: 36px;
    border-radius: 8px;
    background: var(--color-bg-tertiary);
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--color-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}
.panel-close-btn:hover { color: var(--color-accent); border-color: var(--color-accent); }

.estimate-panel-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.estimate-panel-body::-webkit-scrollbar { width: 4px; }
.estimate-panel-body::-webkit-scrollbar-track { background: transparent; }
.estimate-panel-body::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 4px; }

/* Summary in panel */
.panel-summary {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.panel-stat {
    background: var(--color-bg-primary);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 12px;
    padding: var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-stat-main {
    border-color: var(--color-accent);
    box-shadow: 0 0 20px rgba(0,255,148,0.1);
}

.panel-stat-label {
    font-size: 0.85rem;
    color: var(--color-text-tertiary);
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.panel-stat-value {
    font-size: 1.3rem;
    font-weight: 800;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.panel-stat-main .panel-stat-value { font-size: 1.6rem; }

.panel-stat-sub {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    text-align: right;
}

/* Tasks in panel */
.panel-tasks { margin-bottom: var(--spacing-md); }

.panel-section-title {
    font-size: 0.85rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.panel-task {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 0.6rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.03);
    gap: var(--spacing-sm);
}

.panel-task-name {
    font-size: 0.9rem;
    flex: 1;
}

.panel-task-name small {
    display: block;
    color: var(--color-text-tertiary);
    font-size: 0.8rem;
}

.panel-task-hours {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-accent);
    background: rgba(0,255,148,0.1);
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    white-space: nowrap;
}

.panel-task-cost {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    white-space: nowrap;
    min-width: 80px;
    text-align: right;
}

/* Assumptions in panel */
.panel-assumptions {
    margin-bottom: var(--spacing-md);
}

.panel-assumption {
    padding: 0.4rem 0 0.4rem 1rem;
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    position: relative;
}

.panel-assumption::before {
    content: '';
    position: absolute;
    left: 0; top: 50%;
    transform: translateY(-50%);
    width: 4px; height: 4px;
    background: var(--color-accent);
    border-radius: 50%;
}

/* CTA in panel */
.panel-cta {
    padding: var(--spacing-sm);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-accent);
    border-radius: 12px;
    text-align: center;
}

.panel-cta p {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.panel-cta-btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--color-accent-gradient);
    color: var(--color-bg-primary);
    border-radius: 8px;
    font-weight: 700;
    font-family: var(--font-primary);
    font-size: 0.9rem;
    transition: var(--transition-fast);
    border: none;
    cursor: pointer;
    text-decoration: none;
}
.panel-cta-btn:hover { transform:translateY(-2px); box-shadow:var(--shadow-glow); }

/* ============================================
   Estimate card in chat
   ============================================ */
.estimate-card-chat {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-accent);
    border-radius: 16px;
    padding: var(--spacing-sm);
    margin-top: 0.5rem;
}

.estimate-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.estimate-card-price {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.estimate-card-hours {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-accent);
}

.estimate-card-details-btn {
    padding: 0.5rem 1rem;
    background: rgba(0,255,148,0.1);
    border: 1px solid var(--color-accent);
    border-radius: 8px;
    color: var(--color-accent);
    font-family: var(--font-primary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    width: 100%;
    margin-top: 0.5rem;
}
.estimate-card-details-btn:hover {
    background: var(--color-accent);
    color: var(--color-bg-primary);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width:768px) {
    .nav-links {
        position:fixed; top:0; right:-100%;
        width:80%; max-width:400px; height:100vh;
        background: var(--color-bg-secondary);
        flex-direction:column; justify-content:center; align-items:center;
        transition: var(--transition-medium);
        box-shadow: var(--shadow-lg);
        z-index: 1001;
    }
    .nav-links.active { right:0; }
    .nav-toggle { display:flex; z-index:1002; }

    .chat-messages { padding: var(--spacing-sm); }
    .chat-input-wrapper { padding: 0.75rem; }
    .message { max-width: 92%; }

    .estimate-panel { width: 100%; max-width: 100vw; }
}