/* ============================================
   Branding CSS Variables
   These can be customized without affecting functionality
   ============================================ */
:root {
    /* Brand Colors - Main Color Palette */
    --primary-color: #2D76FF;
    /* Bright Blue - Main brand color */
    --primary-medium: #1851B3;
    /* Medium Blue - Hover states */
    --primary-dark: #022960;
    /* Dark Blue - Darker elements */
    --accent-color: #FF700B;
    /* Orange - Accent color */

    /* Text Colors */
    --text-color: #000000;
    /* Black - Primary text */
    --text-dark: #000B15;
    /* Very Dark Blue - Alternative text */
    --text-light: #666666;
    /* Light gray - Secondary text */

    /* Background Colors */
    --background-color: #EBEBEB;
    /* Light Gray - Page background */
    --card-background: #FFFFFF;
    /* White - Card/container background */
    --border-color: #dee2e6;
    /* Border color */

    /* Status Colors */
    --success-color: #28a745;
    /* Success green */
    --error-color: #dc3545;
    /* Error red */
    --secondary-color: #6c757d;
    /* Secondary gray */

    /* Primary Color with Transparency */
    --primary-color-light: rgba(45, 118, 255, 0.05);
    /* Light blue background */
    --primary-color-medium: rgba(45, 118, 255, 0.1);
    /* Medium blue background */

    /* Logo Configuration */
    /* Logo is loaded from project folder (logo.png, logo.svg, etc.) */
    --logo-width: 150px;
    --logo-height: auto;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Border Radius */
    --border-radius: 8px;
    --border-radius-lg: 12px;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ============================================
   Header Styles
   ============================================ */
.header {
    background-color: var(--card-background);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md) var(--spacing-lg);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    position: relative;
}

.logo {
    width: var(--logo-width);
    height: var(--logo-height);
    object-fit: contain;
    max-height: 60px;
    /* Prevent logo from being too tall */
    flex-shrink: 0;
    /* Prevent logo from shrinking */
}

.app-title {
    font-size: 38px;
    font-weight: 900;
    /* Heavy/bold weight */
    color: #fe730d;
    margin-left: -230px;
    flex: 1;
    text-align: center;
    padding-left: var(--spacing-md);
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    letter-spacing: 0.5px;
    /* Slight letter spacing for logo-like appearance */
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
    max-width: 800px;
    margin: var(--spacing-xl) auto;
    padding: 0 var(--spacing-md);
    flex: 1;
}

.upload-card {
    background-color: var(--card-background);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary-color);
}

/* ============================================
   File Input Section
   ============================================ */
.file-input-section {
    margin-bottom: var(--spacing-lg);
}

.file-label {
    display: block;
    width: 100%;
    padding: var(--spacing-md);
    border: 2px dashed var(--accent-color);
    border-radius: var(--border-radius);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: rgba(255, 112, 11, 0.05);
}

.file-label:hover {
    border-color: var(--accent-color);
    background-color: rgba(255, 112, 11, 0.1);
    border-style: solid;
}

.file-label:focus-within {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.file-label-text {
    display: block;
    color: var(--text-color);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.file-input {
    display: none;
}

.file-name {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--text-light);
    font-size: 0.9rem;
    word-break: break-all;
}

/* ============================================
   Upload Button
   ============================================ */
.upload-button {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: var(--spacing-md);
}

.upload-button:hover:not(:disabled) {
    background-color: var(--primary-medium);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.upload-button:active:not(:disabled) {
    transform: translateY(0);
}

.upload-button:disabled {
    background-color: var(--secondary-color);
    cursor: not-allowed;
    opacity: 0.6;
}

/* ============================================
   Upload Note
   ============================================ */
.upload-note {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    background-color: var(--primary-color-light);
    border-left: 3px solid var(--primary-color);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    color: var(--text-light);
}

.note-icon {
    font-size: 1rem;
    flex-shrink: 0;
}

.note-text {
    flex: 1;
}

/* ============================================
   Progress Bar
   ============================================ */
.progress-container {
    margin-bottom: var(--spacing-md);
}

.progress-bar-wrapper {
    width: 100%;
    height: 24px;
    background-color: var(--background-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.progress-bar {
    height: 100%;
    width: 0%;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
    border-radius: var(--border-radius);
}

.progress-text {
    text-align: center;
    margin-top: var(--spacing-xs);
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 500;
}

/* ============================================
   Status Messages
   ============================================ */
.status-message {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    margin-top: var(--spacing-md);
    display: none;
    font-weight: 500;
}

.status-message.show {
    display: block;
}

.status-message.success {
    background-color: rgba(40, 167, 69, 0.1);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.status-message.error {
    background-color: rgba(220, 53, 69, 0.1);
    color: var(--error-color);
    border: 1px solid var(--error-color);
}

.status-message.info {
    background-color: var(--primary-color-medium);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

/* ============================================
   Footer Styles
   ============================================ */
.footer {
    background-color: var(--card-background);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.footer-text {
    color: var(--text-light);
    font-size: 0.875rem;
    margin: 0;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }

    .app-title {
        font-size: 32px;
    }

    .logo {
        --logo-width: 120px;
    }

    .main-content {
        margin: var(--spacing-md) auto;
        padding: 0 var(--spacing-sm);
    }

    .upload-card {
        padding: var(--spacing-md);
    }

    .card-title {
        font-size: 1.25rem;
    }
}

@media (max-width: 480px) {
    .header {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .app-title {
        font-size: 24px;
    }

    .logo {
        --logo-width: 100px;
    }
}