/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #8B5CF6; /* Roxo */
    --secondary-color: #A78BFA; /* Roxo claro */
    --background-dark: #000000; /* Preto */
    --background-light: #111111; /* Preto suave */
    --text-primary: #FFFFFF; /* Branco */
    --text-secondary: #B0B0B0; /* Cinza claro */
    --border-color: #333333;
    --hover-color: #1F1F1F;
    --accent-color: #7C3AED;
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --error-color: #EF4444;
    --shadow: 0 4px 20px rgba(139, 92, 246, 0.15);
    --shadow-hover: 0 8px 30px rgba(139, 92, 246, 0.25);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, var(--background-dark) 0%, var(--background-light) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Header */
.header {
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0.75rem 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

.btn-secondary {
    background: var(--hover-color);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

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

/* Main Container */
.main-container {
    padding-top: 80px;
    display: flex;
    justify-content: center;
    padding-bottom: 2rem;
}

.chat-container {
    width: 100%;
    max-width: 800px;
    background: var(--background-light);
    border-radius: 20px;
    box-shadow: var(--shadow);
    overflow: hidden;
    margin: 1rem;
    display: flex;
    flex-direction: column;
}

/* Welcome Screen */
.welcome-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 2rem;
    text-align: center;
    flex: 1;
}

.ai-avatar {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 3rem;
    color: white;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}
.welcome-content h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.welcome-content p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.suggestion-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
    width: 100%;
    max-width: 600px;
}

.suggestion-card {
    background: var(--hover-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    text-align: center;
    min-height: 120px;
    position: relative;
    overflow: hidden;
}

.suggestion-card:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.suggestion-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    transition: color 0.3s ease;
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.suggestion-card:hover i {
    color: white;
}

.suggestion-card span {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.2;
    word-wrap: break-word;
    flex-shrink: 0;
}

/* Chat Messages */
.chat-messages {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
    display: none;
}

.chat-messages.active {
    display: block;
}

.message {
    margin-bottom: 1rem;
    animation: messageSlide 0.3s ease-out;
}

@keyframes messageSlide {
    from { 
        opacity: 0; 
        transform: translateY(20px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

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

.message-ai {
    display: flex;
    justify-content: flex-start;
}

.message-content {
    max-width: 75%;
    padding: 0.75rem 1rem;
    border-radius: 18px;
    line-height: 1.5;
    position: relative;
}

.message-user .message-content {
    background: var(--primary-color);
    color: white;
    border-bottom-right-radius: 4px;
}

.message-ai .message-content {
    background: var(--hover-color);
    color: var(--text-primary);
    border-bottom-left-radius: 4px;
}

.message-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
    text-align: right;
}

/* Quick Options */
.quick-options {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    display: none;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.quick-options.active {
    display: flex;
}

.quick-option {
    background: var(--hover-color);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.quick-option:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* Input Area */
.input-area {
    background: var(--hover-color);
    border-top: 1px solid var(--border-color);
    padding: 1rem;
}

.input-container {
    display: flex;
    align-items: end;
    gap: 0.75rem;
    background: var(--background-light);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 0.75rem 1rem;
    transition: border-color 0.3s ease;
}

.input-container:focus-within {
    border-color: var(--primary-color);
}

#messageInput {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    resize: none;
    max-height: 120px;
    min-height: 24px;
    font-family: inherit;
}

#messageInput::placeholder {
    color: var(--text-secondary);
}

#messageInput:focus {
    outline: none;
}

.send-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.send-btn:hover:not(:disabled) {
    background: var(--accent-color);
    transform: scale(1.1);
}

.send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.input-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 0.5rem;
    padding: 0 0.25rem;
}

.sector-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.sector-indicator .online {
    color: var(--success-color);
    animation: blink 2s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0.3; }
}

.input-footer small {
    color: var(--text-secondary);
    font-size: 0.75rem;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-overlay.active {
    display: flex;
}

.loading-spinner {
    text-align: center;
    color: var(--text-primary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Scrollbar Styling */
.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: var(--background-light);
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Responsividade */
@media (max-width: 768px) {
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }

    .main-container {
        padding-top: 70px;
        margin: 0;
    }

    .chat-container {
        margin: 0.5rem;
        border-radius: 12px;
        height: auto; /* flexível */
        min-height: calc(100vh - 90px);
    }

    .suggestion-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
        max-width: 100%;
    }

    .suggestion-card {
        padding: 1.25rem 0.75rem;
        min-height: 100px;
    }

    .suggestion-card i {
        font-size: 2rem;
        width: 35px;
        height: 35px;
    }

    .suggestion-card span {
        font-size: 0.85rem;
    }

    .welcome-content {
        padding: 2rem 1rem;
    }

    .ai-avatar {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }

    .welcome-content h1 {
        font-size: 1.5rem;
    }

    .input-footer {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .chat-container {
        margin: 0.25rem;
        border-radius: 10px;
        height: auto; /* evita corte */
        min-height: calc(100vh - 80px);
    }

    .suggestion-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }

    .suggestion-card {
        padding: 1rem 0.5rem;
        min-height: 90px;
    }

    .suggestion-card i {
        font-size: 1.75rem;
        width: 30px;
        height: 30px;
    }

    .suggestion-card span {
        font-size: 0.8rem;
        line-height: 1.1;
    }

    .header-content {
        padding: 0 0.5rem;
    }

    .logo {
        font-size: 1rem;
    }

    .logo-icon {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }

    .welcome-content {
        padding: 1.5rem 0.75rem;
    }

    .welcome-content h1 {
        font-size: 1.25rem;
    }

    .welcome-content p {
        font-size: 1rem;
    }
}