/* Load order 2/5 — reset, header, auth, upload shell, control panel. */

/* ============================================================================
   BASE STYLES
   ============================================================================ */

* {
    box-sizing: border-box;
}

html {
    overflow-x: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: var(--line-height-loose);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    margin: 0;
    padding: var(--spacing-sm);
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
    box-sizing: border-box;
    font-size: var(--font-size-base);
}

@media (min-width: 768px) {
    body {
        padding: var(--spacing-md);
    }
}

/* Global layout width for coherence */
body > header,
body > #corpusSelectorBar,
body > .main-view-tabs,
body > .layout {
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
}

header {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color-medium);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

@media (min-width: 768px) {
    header {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }
}

header img {
    max-width: 100%;
    height: auto;
}

@media (min-width: 768px) {
    header img {
        max-width: 500px;
    }
}

/* Flex + explicit width: Firefox can mishandle text-align on footer without full width */
.site-footer {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-sizing: border-box;
    width: 100%;
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
    padding-top: 64px;
    padding-bottom: var(--spacing-md, 16px);
    font-size: var(--font-size-sm, 14px);
    color: var(--text-secondary, #666666);
}

.site-footer p {
    margin: 0;
    width: 100%;
    text-align: center;
}

.auth-banner {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) auto 0;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--bg-active);
    width: fit-content;
    font-size: var(--font-size-sm);
}

@media (min-width: 768px) {
    .auth-banner {
        flex-direction: row;
        gap: var(--spacing-sm);
        width: fit-content;
    }
}

.auth-banner span {
    font-weight: var(--font-weight-medium);
}

.auth-banner button {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    background-color: var(--color-primary);
    color: var(--text-inverse);
    cursor: pointer;
    font-weight: var(--font-weight-medium);
    transition: background-color var(--transition-base), transform var(--transition-fast);
    width: 100%;
    min-height: 44px;
    font-size: var(--font-size-base);
}

@media (min-width: 768px) {
    .auth-banner button {
        width: auto;
        padding: var(--spacing-sm) var(--spacing-md);
        min-height: auto;
        font-size: var(--font-size-sm);
    }
}

.auth-banner button:hover:not(:disabled) {
    background-color: var(--color-primary-hover);
    transform: translateY(-1px);
}

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

.auth-banner button:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

.auth-banner button:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}


/* URL input row */
.url-input-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
    align-items: center;
    max-width: 100%;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .url-input-container {
        grid-template-columns: 1fr auto;
        max-width: 700px;
    }
}

.url-input-container h3 {
    grid-column: 1 / -1;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
}

.url-input-container input {
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color-dark);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base); /* Prevents zoom on iOS */
    width: 100%;
    min-height: 44px;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.url-input-container input:focus {
    outline: none;
    border-color: var(--border-color-focus);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.url-input-container button {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background-color: var(--color-primary);
    color: var(--text-inverse);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: var(--font-weight-medium);
    width: 100%;
    min-height: 44px;
    font-size: var(--font-size-base);
    transition: background-color var(--transition-base), transform var(--transition-fast);
}

.url-processing-loading {
    grid-column: 1 / -1;
    margin-top: var(--spacing-xs);
}

.header-loading-inline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    width: 100%;
    min-height: 52px;
    color: var(--text-secondary);
}

.header-loading-inline p {
    margin: 0;
    font-size: var(--font-size-sm);
}

.dropzone-processing {
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (min-width: 768px) {
    .url-input-container button {
        width: auto;
        padding: var(--spacing-sm) var(--spacing-sm);
        min-height: auto;
        font-size: var(--font-size-sm);
    }
}

.url-input-container button:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-1px);
}

.url-input-container button:active {
    transform: translateY(0);
}

.url-input-container button:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.drop-zone {
    border: 2px dashed var(--border-color-dark);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg) var(--spacing-md);
    text-align: center;
    transition: all var(--transition-slow);
    background-color: var(--color-gray-50);
    margin-top: var(--spacing-md);
    box-shadow: var(--shadow-xs);
}

@media (min-width: 768px) {
    .drop-zone {
        padding: var(--spacing-xl);
        margin-top: var(--spacing-md);
    }
}

.drop-zone.dragover {
    border-color: var(--color-primary);
    background-color: var(--bg-hover);
    transform: scale(1.01);
    box-shadow: var(--shadow-md);
}

.drop-zone-content svg {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    opacity: 0.7;
    transition: opacity var(--transition-base);
}

.drop-zone:hover .drop-zone-content svg {
    opacity: 1;
}

.drop-zone-content p {
    margin: var(--spacing-sm) 0;
    color: var(--text-secondary);
}

.drop-zone-or {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin: var(--spacing-sm) 0 !important;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.file-input-label {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-primary);
    color: var(--text-inverse);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: var(--font-weight-medium);
    transition: background-color var(--transition-base), transform var(--transition-fast);
    min-height: 44px;
    font-size: var(--font-size-base);
    width: 100%;
    text-align: center;
}

@media (min-width: 768px) {
    .file-input-label {
        width: auto;
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-sm);
        min-height: auto;
    }
}

.file-input-label:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-1px);
}

.file-input-label:active {
    transform: translateY(0);
}

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

/* Compact PNG file input label */
.file-input-label-png {
    padding: 8px 16px;
    font-size: 14px;
    min-height: 36px;
    border-radius: 4px;
}

@media (min-width: 768px) {
    .file-input-label-png {
        padding: 6px 14px;
        font-size: 13px;
        min-height: 32px;
    }
}

/* Control panel */
.control-panel {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color-medium);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

@media (min-width: 768px) {
    .control-panel {
        padding: var(--spacing-md) var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }
}

.control-row {
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: flex-start;
}

@media (min-width: 768px) {
    .control-row {
        flex-direction: row;
    }
}

.control-row + .control-row {
    margin-top: var(--spacing-sm);
}

.control-row input,
.control-row select,
.control-row button {
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color-dark);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base); /* Prevents zoom on iOS */
    background-color: var(--bg-primary);
    min-height: 44px;
    width: 100%;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.control-row input:focus,
.control-row select:focus {
    outline: none;
    border-color: var(--border-color-focus);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

@media (min-width: 768px) {
    .control-row input,
    .control-row select,
    .control-row button {
        padding: var(--spacing-sm) var(--spacing-sm);
        font-size: var(--font-size-sm);
        min-height: auto;
        width: auto;
    }
}

.control-row input[type="search"] {
    flex: 1 1 100%;
}

@media (min-width: 768px) {
    .control-row input[type="search"] {
        flex: 1 1 240px;
        min-width: 200px;
    }
}

.control-row select {
    width: 100%;
    cursor: pointer;
}

@media (min-width: 768px) {
    .control-row select {
        min-width: 180px;
        width: auto;
    }
}

.control-row button {
    background-color: var(--color-primary);
    color: var(--text-inverse);
    cursor: pointer;
    border: none;
    transition: background-color var(--transition-base), transform var(--transition-fast);
    flex: 1 1 auto;
}

@media (min-width: 768px) {
    .control-row button {
        flex: 0 1 auto;
    }
}

.control-row button:hover:not(:disabled) {
    background-color: var(--color-primary-hover);
    transform: translateY(-1px);
}

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

.control-row button:disabled {
    background-color: var(--color-gray-300);
    color: var(--text-disabled);
    cursor: not-allowed;
    opacity: 0.65;
}

.control-row button:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.search-results {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    min-height: 18px;
}