/* Auth Container */
.auth-container {
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    background-color: var(--bg-secondary);
    transition: opacity 0.3s ease;
}

.auth-container.modal-open {
    opacity: 0.3;
    pointer-events: none;
}

.auth-card {
    max-width: 450px;
    width: 100%;
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 32px;
    padding: 40px;
    box-shadow: var(--shadow);
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-logo {
    width: 64px;
    height: 64px;
    margin-bottom: 20px;
}

.auth-header h1 {
    font-size: 2rem;
    margin-bottom: 8px;
}

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

/* Forms */
.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.btn-block {
    width: 100%;
    margin-top: 20px;
}

.auth-links {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
    font-size: 0.875rem;
}

.auth-links a {
    color: var(--text-secondary);
    text-decoration: none;
    cursor: pointer;
}

.auth-links a:hover {
    color: var(--accent-primary);
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    max-width: 100vw;
    height: 100%;
    height: 100vh;
    height: 100dvh;
    max-height: 100dvh;
    background-color: rgba(6, 18, 15, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 16px;
    box-sizing: border-box;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-y: contain;
}

.modal.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    background-color: var(--card-bg);
    border: 1px solid rgba(176, 141, 87, 0.28);
    border-radius: 24px;
    max-width: 600px;
    width: 90%;
    max-height: calc(100vh - 32px);
    max-height: calc(100dvh - 32px);
    margin: auto;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
    position: relative;
    transform: translateY(0);
    animation: modalSlideIn 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    box-sizing: border-box;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-24px) scale(0.98);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

.modal-lg {
    max-width: 800px;
}

.modal-header {
    padding: 24px 30px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    background-color: var(--card-bg);
    z-index: 10;
    border-radius: 24px 24px 0 0;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.45rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.modal-close {
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    line-height: 1;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s;
}

.modal-close:hover {
    background-color: var(--bg-tertiary);
    color: var(--error);
}

.modal-body {
    padding: 26px 30px calc(26px + env(safe-area-inset-bottom, 16px));
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-y: contain;
    box-sizing: border-box;
}

/* Account Type Selection */
.account-types {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 20px 0;
}

.account-type-card {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 30px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
}

.account-type-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow);
}

.account-type-card i {
    font-size: 40px;
    color: var(--accent-primary);
    margin-bottom: 15px;
}

.account-type-card h3 {
    margin-bottom: 10px;
}

.account-type-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

/* Step Indicator */
.step-indicator {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
    position: relative;
}

.step-indicator::before {
    content: '';
    position: absolute;
    top: 16px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--border);
    z-index: 1;
}

.step {
    position: relative;
    z-index: 2;
    background-color: var(--card-bg);
    padding: 0 15px;
    text-align: center;
}

.step-number {
    width: 34px;
    height: 34px;
    background-color: var(--bg-tertiary);
    border: 2px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 8px;
    font-weight: 600;
    color: var(--text-secondary);
}

.step.active .step-number {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

.step.completed .step-number {
    background-color: var(--success);
    border-color: var(--success);
    color: white;
}

.step-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.step.active .step-label {
    color: var(--accent-primary);
    font-weight: 500;
}

/* Form Steps */
.form-step {
    display: none;
}

.form-step.active {
    display: block;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 15px;
}

/* File Upload */
.file-upload {
    border: 2px dashed var(--border);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    background-color: var(--bg-tertiary);
}

.file-upload:hover {
    border-color: var(--accent-primary);
    background-color: var(--bg-secondary);
}

.file-upload i {
    font-size: 40px;
    color: var(--accent-primary);
    margin-bottom: 15px;
}

.file-upload p {
    color: var(--text-secondary);
    margin: 0;
}

.file-upload small {
    color: var(--text-tertiary);
    display: block;
    margin-top: 10px;
}



.pin-display {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    color: var(--accent-primary);
    background-color: var(--bg-tertiary);
    padding: 20px;
    border-radius: 12px;
    margin: 20px 0;
    border: 1px solid var(--border);
    letter-spacing: 5px;
}

.otp-code {
    font-size: 3rem;
    font-weight: 700;
    text-align: center;
    color: var(--success);
    background-color: var(--bg-tertiary);
    padding: 30px;
    border-radius: 12px;
    margin: 20px 0;
    border: 2px dashed var(--success);
    letter-spacing: 10px;
}

/* Form Actions */
.form-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 28px;
}

.form-actions .btn-back {
    flex: 0 0 110px;
    width: 110px;
    text-align: center;
    padding-left: 12px;
    padding-right: 12px;
}

.form-actions .btn-submit-auth,
.form-actions button:not(.btn-back) {
    flex: 1;
    min-width: 0;
}

/* File Upload with Preview */
.file-upload-container {
    margin-bottom: 20px;
}

.file-upload-area {
    border: 2px dashed rgba(176, 141, 87, 0.4);
    border-radius: 14px;
    padding: 22px 18px;
    text-align: center;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    background-color: var(--bg-tertiary);
    position: relative;
    min-height: 110px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
}

.file-upload-area:hover {
    border-color: var(--accent);
    background-color: var(--bg-secondary);
    box-shadow: 0 4px 18px rgba(176, 141, 87, 0.12);
    transform: translateY(-1px);
}

.file-upload-area.dragover {
    border-color: var(--accent);
    background-color: rgba(176, 141, 87, 0.15);
}

.file-upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    pointer-events: none;
}

.file-upload-content i {
    font-size: 32px;
    color: var(--accent);
    transition: transform 0.25s ease;
}

.file-upload-area:hover .file-upload-content i {
    transform: translateY(-2px);
}

.file-upload-content p {
    color: var(--text-primary);
    font-size: 0.92rem;
    font-weight: 500;
    margin: 0;
}

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

/* Preview Grid */
.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 10px;
    margin-top: 10px;
}

.preview-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    aspect-ratio: 1;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border);
}

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

.preview-item .remove-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transition: all 0.2s;
}

.preview-item .remove-btn:hover {
    background-color: var(--error);
}

/* Progress Bar */
.upload-progress {
    margin-top: 10px;
    background-color: var(--bg-tertiary);
    border-radius: 20px;
    height: 6px;
    overflow: hidden;
    position: relative;
}

.progress-bar {
    height: 100%;
    background-color: var(--accent-primary);
    transition: width 0.3s ease;
    border-radius: 20px;
}

.progress-text {
    display: flex;
    justify-content: space-between;
    margin-top: 4px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Preview Containers */
.preview-container,
[id$="Preview"] {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
    display: block;
}

/* Single file preview */
.single-preview {
    margin-top: 14px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    background-color: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
    position: relative;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.single-preview img,
.single-preview .file-icon-wrap {
    width: 48px;
    height: 48px;
    min-width: 48px;
    max-width: 48px;
    border-radius: 10px;
    object-fit: cover;
    flex-shrink: 0;
    border: 1px solid var(--border);
}

.single-preview .file-icon-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(176, 141, 87, 0.12);
    color: var(--accent);
    font-size: 22px;
}

.single-preview .file-info {
    flex: 1 1 0%;
    min-width: 0;
    max-width: calc(100% - 94px);
    overflow: hidden;
    box-sizing: border-box;
}

.single-preview .file-name {
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    width: 100%;
    display: block;
    margin-bottom: 2px;
    word-break: break-all;
}

.single-preview .file-size {
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-variant-numeric: tabular-nums;
}

.single-preview .remove-file-btn {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    background-color: var(--card-bg);
    cursor: pointer;
    transition: all 0.2s ease;
    margin-left: 6px;
    padding: 0;
}

.single-preview .remove-file-btn:hover {
    background-color: rgba(224, 93, 77, 0.12);
    color: var(--error);
    border-color: rgba(224, 93, 77, 0.3);
    transform: scale(1.05);
}

/* Upload error */
.upload-error {
    color: var(--error);
    font-size: 0.9rem;
    margin-top: 5px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.upload-error i {
    font-size: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
    .auth-card {
        padding: 30px 20px;
    }
    
    .account-types {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .modal {
        padding: 0 !important;
        align-items: flex-end !important;
    }

    .modal-content {
        width: 100% !important;
        max-width: 100% !important;
        margin: 0 !important;
        border-radius: 24px 24px 0 0 !important;
        border-bottom: none !important;
        border-left: none !important;
        border-right: none !important;
        max-height: 86vh !important;
        max-height: calc(100dvh - 36px) !important;
        max-height: calc(100dvh - 36px - env(safe-area-inset-top, 0px)) !important;
        display: flex !important;
        flex-direction: column !important;
        overflow: hidden !important;
        animation: rcbAuthModalSlideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1) !important;
    }

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

    .modal-header {
        flex-shrink: 0 !important;
        position: sticky !important;
        top: 0 !important;
        z-index: 10 !important;
        border-radius: 24px 24px 0 0 !important;
        padding: 16px 20px !important;
    }
    
    .modal-body {
        padding: 18px 18px calc(48px + env(safe-area-inset-bottom, 24px)) !important;
        flex: 1 1 auto !important;
        min-height: 0 !important;
        overflow-y: auto !important;
        -webkit-overflow-scrolling: touch !important;
    }
    
    .step-label {
        font-size: 0.75rem;
    }
    
    .otp-code {
        font-size: 2rem;
        letter-spacing: 5px;
    }
}