/* ============================================
   Dosya - Modern File Upload Styles
   ============================================ */

:root {
    --color-bg: #f0f4f9;
    --color-surface: #ffffff;
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-light: #eff6ff;
    --color-primary-border: #bfdbfe;
    --color-success: #059669;
    --color-success-light: #ecfdf5;
    --color-success-border: #a7f3d0;
    --color-error: #dc2626;
    --color-error-light: #fef2f2;
    --color-error-border: #fecaca;
    --color-text: #0f172a;
    --color-text-secondary: #64748b;
    --color-text-muted: #94a3b8;
    --color-border: #e2e8f0;
    --color-border-hover: #cbd5e1;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
}

/* --- Reset & Base --- */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}

/* --- App Layout --- */
.app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.app-main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 16px;
}

/* --- App Header --- */
.app-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.app-header .container {
    display: flex;
    align-items: center;
    height: 56px;
}

.app-logo {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
    transition: opacity 0.15s;
}

.app-logo:hover {
    color: var(--color-primary);
    opacity: 0.85;
}

.app-logo svg {
    color: var(--color-primary);
}

/* --- App Footer --- */
.app-footer {
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
    padding: 16px 0;
}

.app-footer .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

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

/* --- Upload Card --- */
.upload-container {
    width: 100%;
    max-width: 520px;
    margin: 0 auto;
}

.upload-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.upload-card-header {
    padding: 32px 32px 0 32px;
}

.upload-card-header h1 {
    margin: 0 0 8px 0;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.upload-description {
    margin: 0;
    color: var(--color-text-secondary);
    font-size: 0.925rem;
    line-height: 1.5;
}

.upload-description strong {
    color: var(--color-text);
}

/* --- Success Message --- */
.upload-success {
    display: flex;
    gap: 12px;
    margin: 20px 24px 0 24px;
    padding: 16px;
    background: var(--color-success-light);
    border: 1px solid var(--color-success-border);
    border-radius: var(--radius-md);
}

.upload-success-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    color: var(--color-success);
}

.upload-success-body {
    flex: 1;
    min-width: 0;
}

.upload-success-title {
    margin: 0 0 8px 0;
    font-size: 0.9rem;
    font-weight: 600;
    color: #065f46;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-success);
    background: transparent;
    border: 1px solid var(--color-success-border);
    border-radius: var(--radius-sm);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.15s;
}

.btn-download:hover {
    background: var(--color-success);
    color: #fff;
    border-color: var(--color-success);
}

/* --- Error Message --- */
.upload-error {
    margin: 20px 24px 0 24px;
    padding: 12px 16px;
    background: var(--color-error-light);
    border: 1px solid var(--color-error-border);
    border-radius: var(--radius-md);
    color: var(--color-error);
    font-size: 0.875rem;
}

.upload-error ul {
    margin: 0;
    padding-left: 20px;
}

/* --- Upload Form --- */
.upload-form {
    padding: 24px 32px 32px 32px;
}

/* --- Dropzone --- */
.upload-dropzone {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    cursor: pointer;
    transition: all 0.2s;
}

.upload-dropzone:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.upload-dropzone.drag-over {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
    border-style: solid;
    transform: scale(1.01);
}

.upload-dropzone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 32px 24px;
    text-align: center;
    pointer-events: none;
}

.upload-dropzone-icon {
    color: var(--color-text-muted);
    margin-bottom: 4px;
    transition: color 0.2s;
}

.upload-dropzone.drag-over .upload-dropzone-icon,
.upload-dropzone:hover .upload-dropzone-icon {
    color: var(--color-primary);
}

.upload-dropzone-text {
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.upload-dropzone-primary {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
}

.upload-dropzone-secondary {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.upload-dropzone-hint {
    margin: 4px 0 0 0;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.upload-dropzone-input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

/* --- File Info --- */
.upload-file-info {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 12px;
    padding: 12px 16px;
    background: var(--color-primary-light);
    border: 1px solid var(--color-primary-border);
    border-radius: var(--radius-sm);
}

.upload-file-info-icon {
    flex-shrink: 0;
    color: var(--color-primary);
}

.upload-file-info-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.upload-file-info-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.upload-file-info-size {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

.upload-file-info-remove {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all 0.15s;
}

.upload-file-info-remove:hover {
    background: var(--color-error-light);
    color: var(--color-error);
    border-color: var(--color-error-border);
}

/* --- Validation --- */
.upload-validation-error {
    display: block;
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--color-error);
}

/* --- Upload Button --- */
.btn-upload {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    margin-top: 16px;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.15s;
}

.btn-upload:hover:not(:disabled) {
    background: var(--color-primary-hover);
    box-shadow: var(--shadow-md);
}

.btn-upload:active:not(:disabled) {
    transform: scale(0.98);
}

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

/* --- Responsive --- */
@media (max-width: 480px) {
    .app-main {
        padding: 16px 12px;
    }

    .upload-card-header {
        padding: 24px 20px 0 20px;
    }

    .upload-form {
        padding: 20px 20px 24px 20px;
    }

    .upload-success {
        margin: 16px 16px 0 16px;
    }

    .upload-error {
        margin: 16px 16px 0 16px;
    }

    .upload-dropzone {
        min-height: 160px;
    }

    .upload-dropzone-icon svg {
        width: 36px;
        height: 36px;
    }
}