:root {
    --bg-color: #f8fafc;
    --surface-color: rgba(255, 255, 255, 0.9);
    --border-color: rgba(255, 255, 255, 0.5);
    --border-solid: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --primary-color: #003E7E; 
    --accent-color: #00D028; 
    --primary-hover: #002d5c;
    --danger-color: #ef4444;
    --danger-hover: #b91c1c;
    --glass-shadow: 0 10px 40px -10px rgba(0, 62, 126, 0.08);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: linear-gradient(135deg, #f0f4f8 0%, #e1e8f0 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    min-height: 100vh;
}

/* TELA DE LOGIN */
.login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #001f3f 0%, #003E7E 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.login-box {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 3.5rem 3rem;
    border-radius: 28px;
    box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 420px;
    text-align: center;
    transform: translateY(0);
    animation: slideUpFade 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes slideUpFade {
    0% { opacity: 0; transform: translateY(50px); }
    100% { opacity: 1; transform: translateY(0); }
}

.login-logo {
    width: 210px;
    margin-bottom: 2.5rem;
    filter: drop-shadow(0 4px 6px rgba(0,0,0,0.06));
}

.login-box h2 {
    margin-bottom: 2rem;
    font-weight: 800;
    color: var(--primary-color);
    font-size: 1.5rem;
    letter-spacing: -0.025em;
}

.login-error {
    color: var(--danger-color);
    margin-top: 1.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    background: #fef2f2;
    padding: 0.85rem;
    border-radius: 12px;
    border: 1px solid #fecaca;
    animation: shake 0.4s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-6px); }
    75% { transform: translateX(6px); }
}

/* APP CONTAINER */
.app-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 3rem 2rem;
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3.5rem;
    padding: 1.5rem 2.5rem;
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: var(--glass-shadow);
}

.header-brand {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.header-logo {
    height: 42px;
}

.header-brand p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.header-actions {
    display: flex;
    gap: 1.25rem;
    align-items: center;
}

/* BOTÕES MODERNOS */
button {
    font-family: inherit;
}

.btn-logout {
    background: transparent;
    border: 1px solid var(--border-solid);
    color: var(--text-secondary);
    padding: 0.75rem 1.75rem;
    border-radius: 14px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-logout:hover {
    background: #f1f5f9;
    color: var(--text-primary);
    border-color: #cbd5e1;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #005bb5 100%);
    color: white;
    border: none;
    padding: 0.85rem 2rem;
    border-radius: 14px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 8px 16px -4px rgba(0, 62, 126, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 14px 24px -6px rgba(0, 62, 126, 0.4);
    background: linear-gradient(135deg, var(--primary-hover) 0%, #004b99 100%);
}

.btn-primary:active {
    transform: translateY(1px);
}

.btn-danger {
    background-color: transparent;
    color: var(--danger-color);
    border: 1px solid #fca5a5;
    padding: 0.7rem 1.4rem;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-danger:hover {
    background-color: #fef2f2;
    color: var(--danger-hover);
    border-color: var(--danger-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px -2px rgba(220, 38, 38, 0.15);
}

.w-100 {
    width: 100%;
}

/* CARDS DE SESSÃO */
.sessions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 2.5rem;
}

.session-card {
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: 28px;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.1);
    box-shadow: var(--glass-shadow);
    position: relative;
    overflow: hidden;
}

.session-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 5px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    opacity: 0;
    transition: opacity 0.4s ease;
}

.session-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 30px 60px -15px rgba(0, 62, 126, 0.15);
    background: rgba(255, 255, 255, 0.9);
}

.session-card:hover::before {
    opacity: 1;
}

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

.card-header h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

/* BADGES MODERNAS */
.status-badge {
    padding: 0.5rem 1.25rem;
    border-radius: 24px;
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.75px;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}

.status-badge::before {
    content: '';
    display: block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-connected {
    background-color: #f0fdf4;
    color: #16a34a;
    border: 1px solid #bbf7d0;
}
.status-connected::before { background-color: #16a34a; box-shadow: 0 0 10px #16a34a; }

.status-disconnected {
    background-color: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}
.status-disconnected::before { background-color: #dc2626; }

.status-connecting {
    background-color: #fffbeb;
    color: #d97706;
    border: 1px solid #fef08a;
}
.status-connecting::before { background-color: #d97706; animation: blink 1.5s infinite; }

@keyframes blink {
    0%, 100% { opacity: 1; box-shadow: 0 0 10px #d97706;}
    50% { opacity: 0.3; box-shadow: none;}
}

.webhook-info {
    font-size: 0.95rem;
    color: var(--text-secondary);
    word-break: break-all;
    background: rgba(248, 250, 252, 0.9);
    padding: 1.5rem;
    border-radius: 18px;
    border: 1px solid var(--border-solid);
    position: relative;
    overflow: hidden;
    line-height: 1.6;
}

.webhook-info strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 0.5rem;
}

.webhook-info a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s;
}

.webhook-info a:hover {
    color: var(--accent-color);
}

/* MODAL E OVERLAY */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s ease;
    z-index: 1000;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal {
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 32px;
    width: 100%;
    max-width: 540px;
    padding: 4rem 3.5rem;
    transform: translateY(40px) scale(0.95);
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 40px 80px -20px rgba(0, 0, 0, 0.3);
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
}

.modal-header h2 {
    color: var(--text-primary);
    font-size: 1.85rem;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.close-btn {
    background: #f8fafc;
    border: 1px solid var(--border-solid);
    width: 42px;
    height: 42px;
    border-radius: 50%;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.close-btn:hover {
    background: #f1f5f9;
    color: var(--danger-color);
    transform: rotate(90deg) scale(1.1);
    border-color: #cbd5e1;
}

/* OUTROS INPUTS */
.form-group {
    margin-bottom: 1.75rem;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 0.6rem;
    font-weight: 700;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1.1rem 1.5rem;
    border-radius: 16px;
    border: 1px solid var(--border-solid);
    background-color: #f8fafc;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1.05rem;
    transition: all 0.3s ease;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: #fff;
    box-shadow: 0 0 0 4px rgba(0, 62, 126, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #94a3b8;
}

.qr-container {
    text-align: center;
    animation: fadeIn 0.6s ease;
}

.qr-container p {
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 1.75rem;
    font-size: 1rem;
}

.qr-container img {
    border: 1px solid var(--border-solid);
    border-radius: 24px;
    padding: 1.5rem;
    background: #fff;
    box-shadow: 0 15px 30px -10px rgba(0, 0, 0, 0.15);
    max-width: 300px;
    margin: 0 auto;
    transition: transform 0.3s ease;
}

.qr-container img:hover {
    transform: scale(1.05);
}

.status-text {
    color: var(--primary-color);
    font-weight: 800;
    margin-top: 1.75rem;
    font-size: 1.15rem;
}

.loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: 6rem 2rem;
    color: var(--text-secondary);
    font-size: 1.25rem;
    font-weight: 600;
    background: rgba(255,255,255,0.6);
    backdrop-filter: blur(10px);
    border-radius: 28px;
    border: 2px dashed var(--border-solid);
}

.hidden {
    display: none !important;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}
::-webkit-scrollbar-track {
    background: #f1f5f9; 
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1; 
    border-radius: 20px;
    border: 3px solid #f1f5f9;
}
::-webkit-scrollbar-thumb:hover {
    background: #94a3b8; 
}