@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: rgba(255, 255, 255, 0.1);
    --glass-blur: 16px;
    --success: #10b981;
    --danger: #ef4444;
}

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, var(--bg-dark), var(--bg-darker));
    color: var(--text-main);
    margin: 0;
    min-height: 100vh;
}

/* Glassmorphism Classes */
.glass-panel {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    color: var(--text-main);
}

.text-muted-custom {
    color: var(--text-muted) !important;
}

/* Buttons */
.btn-primary {
    background: var(--primary);
    border: none;
    color: #fff;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover, .btn-primary:focus {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
    color: #fff;
}

/* Forms */
.form-control {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border);
    color: var(--text-main);
    border-radius: 8px;
    padding: 12px 16px;
    transition: all 0.3s ease;
}

.form-control:focus {
    background: rgba(15, 23, 42, 0.9);
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
    color: var(--text-main);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-label {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

/* Auth Layout */
.auth-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    padding: 40px;
}

.auth-logo {
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 30px;
    letter-spacing: 1px;
}

.auth-logo span {
    color: var(--primary);
}

/* Sidebar & Header UI */
.sidebar {
    width: 250px;
    background: rgba(15, 23, 42, 0.8);
    border-right: 1px solid var(--border);
    min-height: 100vh;
}
.sidebar-link {
    color: var(--text-muted);
    text-decoration: none;
    padding: 12px 20px;
    display: block;
    border-radius: 8px;
    margin: 4px 12px;
    transition: all 0.2s;
}
.sidebar-link:hover, .sidebar-link.active {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.05);
}
.content-area {
    flex-grow: 1;
}

/* Dashboard KPI Cards */
.kpi-card {
    padding: 24px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 120px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.kpi-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}
.kpi-title {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
    font-weight: 600;
}
.kpi-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1;
}

@media (max-width: 767.98px) {
    .sidebar {
        position: fixed;
        left: -250px;
        z-index: 1045;
        transition: left 0.3s ease;
    }
    .sidebar.show {
        left: 0;
    }
    .sidebar-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1040;
        display: none;
    }
    .sidebar-overlay.show {
        display: block;
    }
}

/* OAuth Buttons */
.btn-google {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-google:hover, .btn-google:focus {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    color: var(--text-main);
}