/* Main CSS - AllToTextAI */

/* CSS Variables */
:root {
    /* Colors */
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-secondary: #64748b;
    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-warning: #f59e0b;
    
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* Header */
    --header-height: 80px;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    height: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-gray-900);
    background-color: var(--color-gray-50);
    min-height: 100vh; /* Changed from height: 100% to min-height: 100vh */
    overflow-x: hidden;
}

/* Header Styles - Updated for new header */
/* Styles moved to header.css */

/* Old header content styles removed - using header.css */

/* Old navigation styles removed - using header.css */

/* Old user authentication styles removed - using header.css */

/* Main Content */
.main {
    padding: 5px var(--spacing-md); /* Simple padding, no top spacing */
    /* Let content flow naturally under sticky header */
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid transparent;
    border-radius: 16px; /* More rounded like Google */
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.1s ease; /* Very simple transition */
    background: none;
    white-space: nowrap;
    transform: none; /* No transform effects */
    box-shadow: none; /* No shadow effects */
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Icon spacing in buttons */
.btn i {
    margin-right: var(--spacing-xs);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
}

/* Click feedback for all primary buttons */
.btn-primary:active:not(:disabled) {
    background-color: #1e40af; /* Darker blue when clicked */
    transform: scale(0.98); /* Subtle press down */
    transition: all 0.05s ease; /* Fast feedback */
}

.btn-secondary {
    background-color: var(--color-gray-100);
    color: var(--color-gray-700);
    border-color: var(--color-gray-300);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-gray-200);
}

.btn-secondary:active:not(:disabled) {
    background-color: var(--color-gray-300);
    transform: scale(0.98);
    transition: all 0.05s ease;
}

.btn-success {
    background-color: var(--color-success);
    color: var(--color-white);
    border-color: var(--color-success);
}

.btn-success:hover:not(:disabled) {
    background-color: #059669;
}

.btn-success:active:not(:disabled) {
    background-color: #047857;
    transform: scale(0.98);
    transition: all 0.05s ease;
}

.btn-danger {
    background-color: var(--color-danger);
    color: var(--color-white);
    border-color: var(--color-danger);
}

.btn-danger:hover:not(:disabled) {
    background-color: #dc2626;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
    font-weight: 600;
    border-radius: 24px !important; /* Very rounded like Google, force override */
}

/* Convert button specific - no effects, simple like Google */
#convert-btn {
    border-radius: 24px !important;
    transition: background-color 0.1s ease !important;
    transform: none !important;
    box-shadow: none !important;
}

#convert-btn:hover:not(:disabled) {
    transform: none !important;
    box-shadow: none !important;
}

/* Click feedback - Google Material Design style */
#convert-btn:active:not(:disabled) {
    background-color: #1e40af !important; /* Darker blue when clicked */
    transform: scale(0.98) !important; /* Very subtle press down */
    transition: all 0.05s ease !important; /* Very fast feedback */
}

/* Responsive Design */
@media (max-width: 1024px) {
    .header-center {
        display: none;
    }
    
    .header-content {
        padding: 0 var(--spacing-sm);
    }
}

@media (max-width: 768px) {
    .main {
        padding: 5px var(--spacing-sm); /* Top/bottom padding reduced to 5px on mobile */
    }

    .header-right {
        gap: var(--spacing-sm);
    }

    .usage-display {
        display: none !important;
    }

    .logo-text {
        font-size: var(--font-size-base);
    }

    /* Avatar smaller on mobile - theo chuẩn createvoice */
    #user-avatar-alltotextai,
    #user-initials-alltotextai {
        width: 32px !important;
        height: 32px !important;
    }
}

@media (max-width: 480px) {
    .header-top-row {
        gap: var(--spacing-sm);
    }

    .btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }

    .btn-large {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-base);
    }

    /* Avatar very small on tiny screens - theo chuẩn createvoice */
    #user-avatar-alltotextai,
    #user-initials-alltotextai {
        width: 24px !important;
        height: 24px !important;
        cursor: pointer !important;
        pointer-events: auto !important;
        touch-action: manipulation !important;
    }
}