:root {
    --primary: #ff4757;
    --primary-light: #ff6b81;
    --secondary: #2f3542;
    --accent: #70a1ff;
    --bg-dark: #0f172a;
    --text-white: #f8fafc;
    --text-muted: #94a3b8;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow-premium: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-white);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden;
}

/* Animação de Fundo */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at 20% 30%, rgba(255, 71, 87, 0.1), transparent 40%),
                radial-gradient(circle at 80% 70%, rgba(112, 161, 255, 0.1), transparent 40%);
    animation: move-bg 20s infinite alternate linear;
}

@keyframes move-bg {
    0% { transform: scale(1); }
    100% { transform: scale(1.1); }
}

.container {
    width: 100%;
    max-width: 450px;
    padding: 20px;
    z-index: 10;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 30px;
    padding: 40px;
    text-align: center;
    box-shadow: var(--shadow-premium);
    animation: fadeIn 0.8s ease-out;
}

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

header {
    margin-bottom: 30px;
}

.icon-container {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 20px;
    box-shadow: 0 10px 20px rgba(255, 71, 87, 0.3);
}

.gmail-icon {
    width: 40px;
    height: 40px;
    color: white;
}

h1 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

header p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.dashboard {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.status-indicator {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: rgba(0, 0, 0, 0.2);
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    margin: 0 auto;
}

.dot {
    width: 8px;
    height: 8px;
    background-color: #2ed573;
    border-radius: 50%;
    box-shadow: 0 0 10px #2ed573;
}

.btn-main {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    border: none;
    padding: 18px 30px;
    border-radius: 15px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(255, 71, 87, 0.4);
}

.btn-main:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 71, 87, 0.5);
}

.btn-main:active {
    transform: translateY(0);
}

.btn-main:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.webhook-config {
    text-align: left;
    margin-top: 10px;
}

.webhook-config label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 8px;
    margin-left: 5px;
}

.webhook-config input {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    padding: 12px 15px;
    border-radius: 12px;
    color: white;
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition);
}

.webhook-config input:focus {
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.1);
}

.hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 5px;
    line-height: 1.4;
}

.card-footer {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--glass-border);
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Loader */
.loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -10px;
    margin-left: -10px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.btn-main.loading .btn-text {
    visibility: hidden;
}

.btn-main.loading .loader {
    display: block;
}

/* Toast */
.toast {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text-white);
    color: var(--bg-dark);
    padding: 15px 30px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.9rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 100;
}

.toast.show {
    bottom: 30px;
}