:root {
    --bg-dark: #020617;
    /* Slate 950 - Mais profundo mas com leve tom azul */
    --glass-bg: rgba(15, 23, 42, 0.6);
    /* Slate 900 com transparência */
    --glass-border: rgba(56, 189, 248, 0.2);
    /* Sky 400 translucido */
    --accent: #0ea5e9;
    /* Sky 500 */
    --accent-glow: rgba(14, 165, 233, 0.3);
    --card-bg: rgba(30, 41, 59, 0.7);
    /* Slate 800 */
    --text-main: #f1f5f9;
}

body.dark {
    background-color: var(--bg-dark);
    color: var(--text-main);
}

body.light {
    --bg-dark: #f8fafc;
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(14, 165, 233, 0.1);
    --card-bg: #ffffff;
    --text-main: #0f172a;
    background-color: var(--bg-dark);
    color: var(--text-main);
}

.bg-grid {
    background-image:
        radial-gradient(circle at 0% 0%, rgba(14, 165, 233, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 100% 100%, rgba(56, 189, 248, 0.1) 0%, transparent 50%);
    background-attachment: fixed;
}

/* Glassmorphism Matrix */
.glass {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 4px 20px 0 rgba(0, 0, 0, 0.2);
}

.glass-strong {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(20px);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.gradient-text {
    background: linear-gradient(135deg, #38bdf8, #818cf8, #2dd4bf);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Inputs & Controls */
textarea,
input,
select {
    background: rgba(15, 23, 42, 0.8) !important;
    border: 1px solid var(--glass-border) !important;
    color: #fff !important;
}

body.light textarea,
body.light input,
body.light select {
    background: #fff !important;
    color: #0f172a !important;
    border: 1px solid #e2e8f0 !important;
}

/* Voice Cards */
.voice-c.glass {
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2338bdf8' %3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1em;
}

.voice-card {
    background: rgba(30, 41, 59, 0.4);
    /* Original background, will be overridden by hover/active */
    border: 2px solid transparent;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.voice-card:hover {
    background: rgba(56, 189, 248, 0.05);
    border-color: rgba(56, 189, 248, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(0, 0, 0, 0.3);
}

.voice-card.active {
    background: rgba(14, 165, 233, 0.15);
    border-color: #0ea5e9;
    box-shadow: 0 0 20px rgba(14, 165, 233, 0.2);
}

.voice-card.active h3 {
    color: var(--accent);
}

.avatar-card {
    transition: all 0.2s ease;
}

.avatar-card:hover {
    background: rgba(255, 255, 255, 0.03);
    transform: scale(1.02);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Toast Animations */
@keyframes slideUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.toast {
    animation: slideUp 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

/* Spinners */
.spinner {
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--accent);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
}

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