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

:root {
    /* Light mode variables */
    --primary: #10a37f;
    --primary-hover: #0e8f6d;
    --success: #10a37f;
    --success-hover: #0e8f6d;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --background: #ffffff;
    --foreground: #1a1a1a;
    --muted: #6b7280;
    --border: #e5e7eb;
    --card-bg: #ffffff;
    --dropzone-bg: #f9fafb;
    --dropzone-hover: #f3f4f6;
    --dropzone-dragover: #e5e7eb;
    --file-item-bg: #f9fafb;
    --file-item-hover: #f3f4f6;
    --toast-bg: #ffffff;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --text-primary: #1a1a1a;
    --text-secondary: #4b5563;
    --text-muted: #6b7280;
    --gradient-start: #10a37f;
    --gradient-end: #0e8f6d;
}

[data-theme="dark"] {
    --primary: #10a37f;
    --primary-hover: #0e8f6d;
    --success: #10a37f;
    --success-hover: #0e8f6d;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --background: #0a0a0a;
    --foreground: #ffffff;
    --muted: #9ca3af;
    --border: #1f2937;
    --card-bg: #111111;
    --dropzone-bg: #1a1a1a;
    --dropzone-hover: #222222;
    --dropzone-dragover: #10a37f;
    --file-item-bg: #1a1a1a;
    --file-item-hover: #222222;
    --toast-bg: #1a1a1a;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --text-primary: #ffffff;
    --text-secondary: #e5e7eb;
    --text-muted: #9ca3af;
    --gradient-start: #10a37f;
    --gradient-end: #0e8f6d;
}

* {
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--background);
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
    background-image: 
        radial-gradient(circle at 100% 0%, rgba(16, 163, 127, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 0% 100%, rgba(16, 163, 127, 0.1) 0%, transparent 50%);
}

.container {
    background-color: transparent;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -2px var(--shadow-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px var(--shadow-color), 0 4px 6px -4px var(--shadow-color);
}

.drop-zone {
    border: 2px dashed var(--border);
    border-radius: 1rem;
    padding: 2.5rem;
    text-align: center;
    background-color: var(--dropzone-bg);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.drop-zone::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, var(--gradient-start), var(--gradient-end));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 0;
}

.drop-zone:hover {
    border-color: var(--primary);
    background-color: var(--dropzone-hover);
}

.drop-zone.dragover {
    border-color: var(--primary);
    background-color: var(--dropzone-dragover);
}

.drop-zone.dragover::before {
    opacity: 0.1;
}

.btn-primary {
    background: linear-gradient(45deg, var(--gradient-start), var(--gradient-end));
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    font-weight: 500;
    transition: all 0.2s ease;
    border: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, var(--gradient-end), var(--gradient-start));
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: -1;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 163, 127, 0.2);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-success {
    background: linear-gradient(45deg, var(--gradient-start), var(--gradient-end));
    color: white;
    padding: 0.75rem 2rem;
    border-radius: 0.75rem;
    font-weight: 500;
    transition: all 0.2s ease;
    border: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-success::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, var(--gradient-end), var(--gradient-start));
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: -1;
}

.btn-success:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 163, 127, 0.2);
}

.btn-success:hover:not(:disabled)::before {
    opacity: 1;
}

.btn-success:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.file-item {
    display: flex;
    align-items: center;
    padding: 1rem;
    background-color: var(--file-item-bg);
    border-radius: 0.75rem;
    border: 1px solid var(--border);
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.file-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, var(--gradient-start), var(--gradient-end));
    opacity: 0;
    transition: opacity 0.2s ease;
}

.file-item:hover {
    border-color: var(--primary);
    background-color: var(--file-item-hover);
    transform: translateX(4px);
}

.file-item:hover::before {
    opacity: 0.05;
}

.file-item .file-name {
    flex-grow: 1;
    margin-right: 1rem;
    color: var(--text-primary);
    font-size: 0.875rem;
    position: relative;
    z-index: 1;
}

.file-item .remove-file {
    color: var(--danger);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 0.5rem;
    transition: all 0.2s ease;
    position: relative;
    z-index: 1;
    font-size: 1.25rem;
    line-height: 1;
}

.file-item .remove-file:hover {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-hover);
    transform: scale(1.1);
}

.progress-container {
    height: 0.5rem;
    background-color: var(--border);
    border-radius: 9999px;
    overflow: hidden;
    position: relative;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(45deg, var(--gradient-start), var(--gradient-end));
    transition: width 0.3s ease;
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

/* Toast styles */
.toast {
    position: fixed;
    bottom: 1rem;
    right: 1rem;
    padding: 1rem 1.5rem;
    border-radius: 0.75rem;
    background-color: var(--toast-bg);
    color: var(--text-primary);
    box-shadow: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -2px var(--shadow-color);
    z-index: 50;
    animation: slideIn 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--danger);
}

/* Theme toggle button */
.theme-toggle {
    position: fixed;
    top: 1rem;
    right: 1rem;
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.75rem;
    border-radius: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 50;
    backdrop-filter: blur(10px);
}

.theme-toggle:hover {
    background-color: var(--dropzone-hover);
    transform: translateY(-1px);
}

/* Text styles */
.text-primary {
    color: var(--text-primary);
}

.text-secondary {
    color: var(--text-secondary);
}

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

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}