:root {
    /* Solv Network Color Palette */
    --primary-cyan: #0693e3;
    --vivid-purple: #9b51e0;
    --vivid-green: #00d084;
    --vivid-orange: #ff6900;
    --dark-gray: #32373c;
    --light-cyan: #8ed1fc;
    --pale-cyan: #7bdcb5;
    --white: #ffffff;
    --black: #000000;
}

body {
    background: linear-gradient(135deg, var(--primary-cyan) 0%, var(--vivid-purple) 100%);
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.navbar {
    background: var(--white) !important;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand {
    color: var(--dark-gray) !important;
    font-weight: 700;
    font-size: 1.5rem;
    transition: opacity 0.3s ease;
}

.navbar-brand:hover {
    opacity: 0.8;
}

.navbar-nav {
    align-items: center;
    gap: 0.5rem;
}

.nav-link {
    color: var(--dark-gray) !important;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
    padding: 0.5rem 1rem !important;
    position: relative;
}

.nav-link:hover {
    color: var(--primary-cyan) !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary-cyan);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 60%;
}

.nav-link.btn-action {
    background: var(--primary-cyan);
    color: var(--white) !important;
    padding: 0.6rem 1.8rem !important;
    border-radius: 30px;
    font-weight: 600;
    margin-left: 0.5rem;
    box-shadow: 0 4px 15px rgba(6, 147, 227, 0.2);
}

.nav-link.btn-action::after {
    display: none;
}

.nav-link.btn-action:hover {
    background: var(--vivid-purple);
    box-shadow: 0 6px 20px rgba(155, 81, 224, 0.3);
    transform: translateY(-2px);
}

.navbar-toggler {
    border: none;
    padding: 0.5rem;
}

.navbar-toggler:focus {
    box-shadow: none;
}

.main-content {
    padding: 40px 0;
}

.card {
    border: none;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    transition: all 0.3s ease;
    background: var(--white);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 50px rgba(6, 147, 227, 0.2);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-cyan), var(--vivid-purple));
    border: none;
    padding: 10px 30px;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    color: var(--white) !important;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(6, 147, 227, 0.4);
    background: linear-gradient(135deg, var(--vivid-purple), var(--primary-cyan));
    color: var(--white) !important;
}

.btn-success {
    background: linear-gradient(135deg, var(--vivid-green), var(--pale-cyan));
    border: none;
    border-radius: 50px;
    font-weight: 600;
}

.btn-success:hover {
    background: linear-gradient(135deg, var(--pale-cyan), var(--vivid-green));
    transform: translateY(-2px);
}

.chat-container {
    background: var(--white);
    border-radius: 20px;
    padding: 25px;
    height: 600px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    margin-bottom: 20px;
}

.message {
    margin-bottom: 20px;
    padding: 15px 20px;
    border-radius: 18px;
    max-width: 80%;
    animation: fadeIn 0.3s ease;
}

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

.message.user {
    background: linear-gradient(135deg, rgba(6, 147, 227, 0.1), rgba(142, 209, 252, 0.15));
    margin-left: auto;
    border-left: 3px solid var(--primary-cyan);
}

.message.assistant {
    background: linear-gradient(135deg, rgba(155, 81, 224, 0.1), rgba(142, 209, 252, 0.1));
    border-left: 3px solid var(--vivid-purple);
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 25px;
}

.image-card {
    position: relative;
    overflow: hidden;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.image-card:hover {
    transform: scale(1.05) rotate(1deg);
    box-shadow: 0 15px 40px rgba(6, 147, 227, 0.3);
}

.image-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.text-primary {
    color: var(--primary-cyan) !important;
}

.text-success {
    color: var(--vivid-green) !important;
}

.dropdown-menu {
    border-radius: 15px;
    border: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.dropdown-item:hover {
    background: linear-gradient(135deg, rgba(6, 147, 227, 0.1), rgba(142, 209, 252, 0.1));
    color: var(--primary-cyan);
}

.reply-animate {
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.reply-hidden {
    opacity: 0;
    transform: translateY(8px);
}

.reply-visible {
    opacity: 1;
    transform: translateY(0);
}


/* Responsividade Mobile */
@media (max-width: 768px) {
    .main-content {
        padding: 20px 0;
    }

    .card {
        border-radius: 15px;
        margin-bottom: 15px;
    }

    .chat-container {
        height: calc(100vh - 200px);
        min-height: 400px;
        padding: 15px;
        border-radius: 15px;
    }

    .messages-container {
        padding: 10px;
    }

    .message {
        max-width: 90%;
        padding: 12px 15px;
        font-size: 0.95rem;
    }

    .btn-primary {
        padding: 8px 20px;
        font-size: 0.9rem;
    }

    .navbar-brand {
        font-size: 1.1rem;
    }

    .nav-link {
        padding: 0.5rem 1rem;
    }

    .image-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 15px;
    }

    .image-card img {
        height: 180px;
    }

    /* Ajustes no navbar mobile */
    .navbar-collapse {
        background: rgba(255, 255, 255, 0.98);
        padding: 15px;
        border-radius: 15px;
        margin-top: 10px;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    }

    .navbar .nav-item {
        margin-bottom: 5px;
    }

    .navbar .btn-primary {
        width: 100%;
        margin-top: 10px;
        margin-left: 0 !important;
    }

    /* Dropdown de usuário */
    .nav-item.dropdown {
        margin-top: 10px;
    }
}

@media (max-width: 576px) {
    body {
        font-size: 14px;
    }

    .card-body {
        padding: 1rem;
    }

    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.3rem;
    }

    .image-grid {
        grid-template-columns: 1fr;
    }

    .chat-container {
        height: calc(100vh - 180px);
    }

    .message {
        max-width: 95%;
    }
}