/* CSS VARIABLES & RESET */
:root {
    --primary: #22c55e;
    --primary-dark: #16a34a;
    --primary-light: #4ade80;
    --primary-glow: rgba(34, 197, 94, 0.3);
    --bg-dark: #0f0f17;
    --bg-card: #1a1a2e;
    --bg-card-hover: #252542;
    --bg-input: #16162a;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #2a2a4a;
    --border-focus: #22c55e;
    --danger: #ef4444;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--primary-glow);
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-md: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --safe-area-top: env(safe-area-inset-top, 0px);
    --safe-area-bottom: env(safe-area-inset-bottom, 0px);
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-family);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

input,
button,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
}

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

button {
    cursor: pointer;
    border: none;
    background: none;
}

a {
    color: inherit;
    text-decoration: none;
}

.hidden {
    display: none !important;
}

.required {
    color: var(--danger);
}

/* PAGE */
.page {
    display: none;
    min-height: 100vh;
    min-height: 100dvh;
    padding-top: var(--safe-area-top);
    padding-bottom: var(--safe-area-bottom);
    animation: fadeIn var(--transition-normal) ease;
}

.page.active {
    display: flex;
    flex-direction: column;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(20px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* TOAST */
.toast {
    position: fixed;
    top: calc(var(--safe-area-top) + 16px);
    left: 50%;
    transform: translateX(-50%) translateY(-120%);
    background: linear-gradient(135deg, var(--bg-card) 0%, #1f2937 100%);
    border: 1px solid var(--primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    z-index: 9999;
    transition: transform var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
    max-width: calc(100vw - 32px);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}

.toast-icon {
    font-size: 20px;
}

.toast-message {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
}

/* LOADING */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 15, 23, 0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.loading-overlay.show {
    opacity: 1;
    visibility: visible;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-text {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* LOGIN */
.login-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--spacing-xl);
    max-width: 400px;
    margin: 0 auto;
    width: 100%;
}

.login-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.login-logo {
    display: inline-flex;
    margin-bottom: var(--spacing-lg);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.login-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.input-group label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.input-group input {
    height: 52px;
    background: var(--bg-input);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0 var(--spacing-md);
    color: var(--text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

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

.login-footer {
    text-align: center;
    margin-top: var(--spacing-2xl);
    color: var(--text-muted);
    font-size: var(--font-size-xs);
}

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    min-height: 48px;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--font-size-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: var(--shadow-sm), 0 4px 12px rgba(34, 197, 94, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md), 0 6px 20px rgba(34, 197, 94, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-full {
    width: 100%;
}

.btn-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.btn-back {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.btn-back:hover {
    background: var(--bg-card);
}

.btn-cta {
    min-height: 64px;
    font-size: var(--font-size-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
}

/* HEADER */
.header {
    background: linear-gradient(180deg, var(--bg-dark) 0%, transparent 100%);
    padding: var(--spacing-lg) var(--spacing-md);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 600px;
    margin: 0 auto;
}

.header-left {
    flex: 1;
}

.greeting {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.date-today {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.header-back {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
}

.header-title {
    flex: 1;
    font-size: var(--font-size-lg);
    font-weight: 600;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.header-spacer {
    width: 44px;
}

/* MAIN */
.main-content {
    flex: 1;
    padding: 0 var(--spacing-md) var(--spacing-xl);
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
}

/* SEARCH */
.search-container {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

.search-input {
    width: 100%;
    height: 52px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 0 var(--spacing-md) 0 48px;
    color: var(--text-primary);
    font-size: var(--font-size-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

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

/* SECTION */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.client-count {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    background: var(--bg-card);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
}

/* CLIENT LIST */
.client-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.client-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    transition: all var(--transition-fast);
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.client-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.client-card:active {
    transform: translateY(0);
}

.client-info {
    flex: 1;
    min-width: 0;
}

.client-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.client-meta {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.client-arrow {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-glow);
    border-radius: var(--radius-md);
    color: var(--primary);
}

/* HISTORY */
.history-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.history-item {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    border: 1px solid var(--border-color);
    animation: slideIn var(--transition-normal) ease;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.history-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
}

.history-thumbnail {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    object-fit: cover;
    flex-shrink: 0;
    background: var(--bg-input);
}

.history-info {
    flex: 1;
    min-width: 0;
}

.history-floor {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.history-date {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* EMPTY STATE */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    text-align: center;
    color: var(--text-muted);
}

.empty-state svg {
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-state p {
    font-size: var(--font-size-md);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
}

.empty-state span {
    font-size: var(--font-size-sm);
}

/* FORM */
.form-content {
    padding-bottom: 100px;
}

.doc-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-md);
    font-weight: 500;
    color: var(--text-secondary);
}

.form-input,
.form-select {
    height: 56px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0 var(--spacing-md);
    color: var(--text-primary);
    font-size: var(--font-size-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    -webkit-appearance: none;
    appearance: none;
}

.form-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 48px;
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

/* PHOTO BUTTONS */
.photo-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.btn-photo {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    min-height: 100px;
    background: var(--bg-card);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.btn-photo:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(34, 197, 94, 0.1);
}

.btn-photo:active {
    transform: scale(0.98);
}

.btn-photo svg {
    opacity: 0.8;
}

.btn-photo span {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* PHOTO PREVIEW */
.photo-preview-container {
    display: none;
}

.photo-preview-container.has-photo {
    display: block;
    animation: fadeIn var(--transition-normal);
}

.photo-preview {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-card);
    border: 2px solid var(--primary);
}

.photo-preview img {
    width: 100%;
    max-height: 300px;
    object-fit: contain;
    background: var(--bg-input);
}

.btn-remove-photo {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(239, 68, 68, 0.9);
    border-radius: var(--radius-full);
    color: white;
    transition: all var(--transition-fast);
}

.btn-remove-photo:hover {
    background: var(--danger);
    transform: scale(1.1);
}

.photo-info {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    text-align: center;
}

/* FORM FOOTER */
.form-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md);
    padding-bottom: calc(var(--spacing-md) + var(--safe-area-bottom));
    background: linear-gradient(180deg, transparent 0%, var(--bg-dark) 30%);
    z-index: 50;
}

.btn-submit {
    max-width: 600px;
    margin: 0 auto;
    min-height: 56px;
    font-size: var(--font-size-lg);
    border-radius: var(--radius-lg);
}

/* IMAGE VIEWER */
.image-viewer {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.image-viewer.show {
    opacity: 1;
    visibility: visible;
}

.image-viewer img {
    max-width: 95vw;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--radius-md);
}

.btn-close-viewer {
    position: absolute;
    top: calc(var(--safe-area-top) + 16px);
    right: var(--spacing-md);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: white;
    transition: all var(--transition-fast);
}

.btn-close-viewer:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* RESPONSIVE */
@media (min-width: 768px) {
    .header {
        padding: var(--spacing-lg) var(--spacing-xl);
    }

    .main-content {
        padding: 0 var(--spacing-xl) var(--spacing-xl);
    }

    .client-list,
    .history-list {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }

    .photo-buttons {
        max-width: 400px;
    }
}

@media (min-width: 1024px) {

    .header-content,
    .main-content {
        max-width: 800px;
    }

    .client-list,
    .history-list {
        grid-template-columns: repeat(3, 1fr);
    }
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ADMIN BUTTON */
.btn-admin {
    color: var(--primary);
}

.btn-admin:hover {
    background: var(--primary-glow);
}

/* SECONDARY & DANGER BUTTONS */
.btn-secondary {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--text-muted);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
    color: white;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

/* ADMIN CLIENT LIST */
.admin-client-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.admin-client-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
}

.admin-client-card .client-info {
    margin-bottom: var(--spacing-md);
}

.admin-client-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-edit,
.btn-delete {
    flex: 1;
    min-height: 44px;
    font-size: var(--font-size-sm);
}

.btn-edit {
    background: var(--bg-card-hover);
    color: var(--primary);
    border: 1px solid var(--primary);
}

.btn-edit:hover {
    background: var(--primary-glow);
}

.btn-delete {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border: 1px solid var(--danger);
}

.btn-delete:hover {
    background: rgba(239, 68, 68, 0.2);
}

/* MODAL */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal.show .modal-content {
    transform: translateY(0);
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    padding: var(--spacing-lg);
    transform: translateY(100%);
    transition: transform var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-small {
    max-width: 400px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.modal-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.btn-close-modal {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.btn-close-modal:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.modal-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.modal-message {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.modal-message strong {
    color: var(--text-primary);
}

.modal-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.modal-actions .btn {
    flex: 1;
}

@media (min-width: 768px) {
    .modal {
        align-items: center;
    }

    .modal-content {
        border-radius: var(--radius-xl);
        max-height: 80vh;
    }

    .admin-client-list {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .admin-client-list {
        grid-template-columns: repeat(3, 1fr);
    }
}