/**
 * PhotoNest Upload Styles
 * Design System: Untitled UI + PhotoNest Brand
 * States: Empty, Drag-Over, Uploading, Success, Error-Invalid, Error-TooLarge
 */

/* PhotoNest Brand Colors */
:root {
    --pn-teal: #2C7A7B;
    --pn-teal-hover: #234E52;
    --pn-charcoal: #2B2B2B;
    --pn-off-white: #F5F5F3;
    --pn-success: #10B981;
    --pn-error: #DC2626;
    --pn-error-bg: #FEE2E2;
    --pn-warning-bg: #FFFBEB;
    --pn-gray-900: #4A4A4A;
    --pn-gray-700: #6A6A6A;
    --pn-gray-500: #8A8A8A;
    --pn-gray-300: #D1D5DB;
}

/* Main Wrapper */
.photonest-upload-wrapper {
    max-width: 800px;
    margin: 40px auto;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.photonest-upload-form {
    background: white;
    border: 1px solid var(--pn-gray-300);
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* STATE 1: Empty State */
.pn-upload-zone {
    border: 2px dashed var(--pn-gray-300);
    border-radius: 12px;
    padding: 60px 40px;
    text-align: center;
    background: var(--pn-off-white);
    transition: all 0.3s ease;
    cursor: pointer;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.pn-upload-zone:hover {
    border-color: var(--pn-teal);
    background: #E6FFFA;
}

.pn-upload-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    background: var(--pn-teal);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 32px;
}

.pn-upload-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--pn-charcoal);
    margin: 0 0 12px;
    line-height: 1.4;
}

.pn-upload-subtitle {
    font-size: 16px;
    color: var(--pn-gray-700);
    margin: 0 0 32px;
    line-height: 1.5;
}

/* Buttons - HIGHER SPECIFICITY TO OVERRIDE THEME */
.photonest-upload-wrapper .pn-btn,
.photonest-upload-wrapper button.pn-btn {
    padding: 12px 24px !important;
    border: none !important;
    border-radius: 8px !important;
    font-size: 16px !important;
    font-weight: 500 !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
    font-family: inherit !important;
    line-height: 1.5 !important;
    text-decoration: none !important;
    display: inline-block !important;
}

.photonest-upload-wrapper .pn-btn-primary,
.photonest-upload-wrapper button.pn-btn-primary {
    background: var(--pn-teal) !important;
    background-color: var(--pn-teal) !important;
    color: white !important;
}

.photonest-upload-wrapper .pn-btn-primary:hover:not(:disabled),
.photonest-upload-wrapper button.pn-btn-primary:hover:not(:disabled) {
    background: var(--pn-teal-hover) !important;
    background-color: var(--pn-teal-hover) !important;
}

.photonest-upload-wrapper .pn-btn-primary:disabled,
.photonest-upload-wrapper button.pn-btn-primary:disabled {
    background: var(--pn-gray-300) !important;
    background-color: var(--pn-gray-300) !important;
    cursor: not-allowed !important;
    opacity: 0.6 !important;
}

.photonest-upload-wrapper .pn-btn-secondary,
.photonest-upload-wrapper button.pn-btn-secondary {
    background: white !important;
    background-color: white !important;
    color: var(--pn-gray-900) !important;
    border: 1px solid var(--pn-gray-300) !important;
}

.photonest-upload-wrapper .pn-btn-secondary:hover,
.photonest-upload-wrapper button.pn-btn-secondary:hover {
    background: var(--pn-off-white) !important;
    background-color: var(--pn-off-white) !important;
}

.photonest-upload-wrapper .pn-btn-destructive,
.photonest-upload-wrapper button.pn-btn-destructive {
    background: var(--pn-error) !important;
    background-color: var(--pn-error) !important;
    color: white !important;
}

.photonest-upload-wrapper .pn-btn-destructive:hover,
.photonest-upload-wrapper button.pn-btn-destructive:hover {
    background: #B91C1C !important;
    background-color: #B91C1C !important;
}

/* STATE 2: Drag Over */
.pn-upload-zone.pn-drag-over {
    border-color: var(--pn-teal);
    background: #E6FFFA;
    border-width: 3px;
}

.pn-upload-zone.pn-drag-over .pn-upload-icon {
    transform: scale(1.1);
}

/* STATE 3: Uploading Progress */
.pn-uploading-state {
    text-align: center;
    padding: 40px;
}

.pn-progress-circle {
    width: 120px;
    height: 120px;
    margin: 0 auto 24px;
    position: relative;
}

.pn-progress-ring {
    transform: rotate(-90deg);
}

.pn-progress-ring circle {
    fill: none;
    stroke-width: 8;
    stroke-linecap: round;
}

.pn-progress-ring .pn-progress-bg {
    stroke: var(--pn-gray-300);
}

.pn-progress-ring .pn-progress-bar {
    stroke: var(--pn-teal);
    transition: stroke-dashoffset 0.3s ease;
}

.pn-progress-percent {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 32px;
    font-weight: 600;
    color: var(--pn-charcoal);
}

.pn-progress-label {
    font-size: 18px;
    font-weight: 500;
    color: var(--pn-charcoal);
    margin: 0 0 8px;
}

.pn-progress-sublabel {
    font-size: 14px;
    color: var(--pn-gray-700);
    margin: 0;
}

/* STATE 4: Success */
.pn-success-state {
    padding: 40px;
}

.pn-success-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    background: var(--pn-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 32px;
}

.pn-success-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--pn-charcoal);
    margin: 0 0 12px;
    text-align: center;
}

.pn-success-subtitle {
    font-size: 16px;
    color: var(--pn-gray-700);
    margin: 0 0 32px;
    text-align: center;
}

.pn-photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 16px;
    margin: 32px 0;
    max-height: 400px;
    overflow-y: auto;
}

.pn-photo-item {
    aspect-ratio: 1;
    border-radius: 8px;
    overflow: hidden;
    background: var(--pn-gray-300);
    position: relative;
}

.pn-photo-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.pn-success-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 32px;
}

/* STATE 5: Error - Invalid Type */
.pn-error-state {
    background: var(--pn-error-bg);
    border: 1px solid var(--pn-error);
    border-radius: 12px;
    padding: 40px;
    text-align: center;
}

.pn-error-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    background: var(--pn-error);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 32px;
}

.pn-error-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--pn-charcoal);
    margin: 0 0 12px;
}

.pn-error-message {
    font-size: 16px;
    color: var(--pn-gray-700);
    margin: 0 0 24px;
    line-height: 1.5;
}

.pn-error-list {
    list-style: none;
    padding: 0;
    margin: 24px 0;
    text-align: left;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.pn-error-list li {
    padding: 8px 12px;
    background: white;
    border-radius: 6px;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--pn-gray-900);
}

/* STATE 6: Error - Too Large (with warning tip) */
.pn-warning-state {
    background: var(--pn-warning-bg);
    border: 1px solid #F59E0B;
    border-radius: 12px;
    padding: 40px;
}

.pn-warning-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    background: #F59E0B;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 32px;
}

.pn-warning-tip {
    background: white;
    border-left: 4px solid #F59E0B;
    padding: 16px;
    margin: 24px 0;
    border-radius: 6px;
    text-align: left;
}

.pn-warning-tip-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--pn-charcoal);
    margin: 0 0 8px;
}

.pn-warning-tip-text {
    font-size: 14px;
    color: var(--pn-gray-700);
    margin: 0;
    line-height: 1.5;
}

/* File List (for selection preview) */
.pn-file-list {
    margin: 24px 0;
    display: none;
}

.pn-file-list.pn-show {
    display: block;
}

.pn-file-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    background: var(--pn-off-white);
    border: 1px solid var(--pn-gray-300);
    border-radius: 8px;
    margin-bottom: 8px;
}

.pn-file-icon {
    width: 40px;
    height: 40px;
    background: var(--pn-teal);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
    margin-right: 12px;
}

.pn-file-info {
    flex: 1;
}

.pn-file-name {
    font-weight: 500;
    color: var(--pn-charcoal);
    font-size: 14px;
    margin: 0 0 4px;
}

.pn-file-size {
    color: var(--pn-gray-700);
    font-size: 12px;
    margin: 0;
}

.pn-remove-file {
    background: transparent !important;
    border: none !important;
    color: var(--pn-gray-500) !important;
    cursor: pointer !important;
    padding: 4px !important;
    font-size: 20px !important;
    line-height: 1 !important;
    transition: color 0.2s ease !important;
}

.pn-remove-file:hover {
    color: var(--pn-error) !important;
}

/* Hidden file input */
#pn-file-input {
    display: none;
}

/* Responsive */
@media (max-width: 768px) {
    .photonest-upload-wrapper {
        margin: 20px 16px;
    }
    
    .photonest-upload-form {
        padding: 24px;
    }
    
    .pn-upload-zone {
        padding: 40px 24px;
        min-height: 250px;
    }
    
    .pn-photo-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: 12px;
    }
    
    .pn-success-actions {
        flex-direction: column;
    }
    
    .pn-success-actions .pn-btn {
        width: 100%;
    }
}

/* Utility Classes */
.pn-hidden {
    display: none !important;
}

.pn-show {
    display: block !important;
}

.pn-text-center {
    text-align: center;
}