:root {
    --primary-color: #2563EB;
    --primary-hover: #1D4ED8;
    --background-color: #F3F4F6;
    --card-background: #FFFFFF;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --border-color: #E5E7EB;
    --success-color: #10B981;
    --error-color: #EF4444;
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-primary);
    background-color: var(--background-color);
    line-height: 1.5;
}

.app-page,
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

.background-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('background.jpg');
    background-size: cover;
    background-position: center;
    filter: blur(0px) brightness(0.6);
    z-index: -1;
}

.container {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    width: 100%;
    max-width: 480px;
    padding: 2.5rem;
    border-radius: 1rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 10px 10px -5px rgba(0, 0, 0, 0.1);
    text-align: center;
    position: relative;
    z-index: 10;
}

header {
    margin-bottom: 2rem;
}

h1 {
    color: var(--text-primary);
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 0.75rem;
    padding: 2rem;
    transition: all 0.2s ease;
    cursor: pointer;
    background-color: #F9FAFB;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--primary-color);
    background-color: #EFF6FF;
}

.icon-container {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.upload-area h3 {
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.upload-area p {
    margin-bottom: 1.5rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.2s;
    border: none;
    font-size: 1rem;
}

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

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

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

.btn.secondary:hover {
    background-color: #059669;
}

.btn.text {
    background: none;
    color: var(--text-secondary);
    text-decoration: underline;
}

.btn.text:hover {
    color: var(--text-primary);
}

.btn.small {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

/* Status Area */
.loader {
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* Result Area */
.result-area {
    text-align: center;
}

.success-icon {
    margin-bottom: 1rem;
}

.timer-warning {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: #DC2626;
    font-size: 0.85rem;
    margin: 1rem 0 1.5rem;
    background-color: #FEF2F2;
    padding: 0.5rem;
    border-radius: 0.5rem;
}

/* Results List */
.results-list {
    text-align: left;
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    background-color: #FFFFFF;
}

.result-item:last-child {
    border-bottom: none;
}

.file-name {
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 60%;
}

.result-item.success .file-name {
    color: var(--text-primary);
}

.result-item.error .file-name {
    color: var(--error-color);
}

.error-text {
    color: var(--error-color);
    font-size: 0.85rem;
    font-weight: 500;
}

/* Alert Banner */
.alert-banner {
    background-color: #FEF3C7;
    color: #92400E;
    border: 1px solid #F59E0B;
    padding: 0.75rem;
    border-radius: 0.5rem;
    margin-top: 1.5rem;
    /* For login page */
    margin-bottom: 2rem;
    /* For app page */
    font-size: 0.85rem;
    line-height: 1.4;
}

.app-container .alert-banner {
    margin-top: 0;
}

/* Login Form */
.login-page header {
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

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

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.login-container .btn.primary {
    width: 100%;
    margin-top: 0.5rem;
}