/* public/css/index.css */

:root {
    /* Color Palette - Premium Dark/Blue sleek theme */
    --bg-color: #0f172a;
    --surface-color: #1e293b;
    --surface-light: #334155;
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    
    --primary-color: #3b82f6;
    --primary-hover: #60a5fa;
    --primary-glow: rgba(59, 130, 246, 0.5);

    --danger-color: #ef4444;
    --danger-hover: #f87171;
    
    --border-color: #334155;

    /* Geometry & Spacing */
    --radius-md: 12px;
    --radius-lg: 16px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;

    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
#main-header {
    background-color: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

/* App Root container */
#app-root {
    flex: 1;
    padding: var(--spacing-lg);
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

/* UIManager Window Styling */
.ui-window-wrapper {
    width: 100%;
    max-width: 600px;
    animation: fadeSlideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.ui-window {
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

.ui-window-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(to right, rgba(255,255,255,0.02), transparent);
}

.ui-window-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.ui-window-body {
    padding: var(--spacing-lg);
}

.ui-window-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: rgba(0,0,0,0.1);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

/* UIManager Smart Buttons */
.smart-btn {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    outline: none;
    position: relative;
    overflow: hidden;
}

.smart-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1) translate(-50%, -50%);
    transform-origin: 50% 50%;
}

.smart-btn:active::after {
    animation: ripple 0.6s ease-out;
}

.smart-btn--primary {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 4px 14px var(--primary-glow);
}

.smart-btn--primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--primary-glow);
}

.smart-btn--secondary {
    background-color: var(--surface-light);
    color: var(--text-primary);
}

.smart-btn--secondary:hover {
    background-color: var(--border-color);
}

/* Animations */
@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes ripple {
    0% {
        transform: scale(0) translate(-50%, -50%);
        opacity: 0.5;
    }
    100% {
        transform: scale(20) translate(-50%, -50%);
        opacity: 0;
    }
}

/* Form Elements inside windows */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px;
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    transition: border-color var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px var(--primary-glow);
}

/* Google Auth special button */
.g_id_signin {
    margin-top: var(--spacing-md);
    display: flex;
    justify-content: center;
}