/* CSS Variables / Design Tokens */
:root {
    --bg-primary: #000000;
    --bg-secondary: #1c1c20;
    --bg-tertiary: #2a2a30;
    --bg-input: #1c1c20;

    --text-primary: #ffffff;
    --text-secondary: #9a9aa0;
    --text-muted: #6b6b75;

    --accent-red: #ef4444;
    --accent-red-hover: #dc2626;
    --accent-blue: #6366f1;
    --accent-blue-light: #818cf8;
    --accent-highlight: #ff6b6b;

    --border-color: #3a3a42;
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    --border-radius-full: 50px;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-glow-red: 0 4px 20px rgba(239, 68, 68, 0.25);
    --shadow-glow-blue: 0 4px 20px rgba(99, 102, 241, 0.25);

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 14px;
    --spacing-lg: 18px;
    --spacing-xl: 24px;

    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

/* Reset & Base Styles */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

/* App Container */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--bg-primary);
}

/* Main Content */
.main-content {
    width: 100%;
    max-width: 420px;
    padding: var(--spacing-lg);
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* Header */
.header {
    margin-bottom: 0;
}

.greeting {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

/* Patient Name Input */
.patient-input-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--bg-secondary);
    padding: 10px var(--spacing-md);
    border-radius: var(--border-radius-full);
    border: 1px solid var(--border-color);
}

.avatar-icon {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.patient-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 400;
    outline: none;
}

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

.patient-input-wrapper:focus-within {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

/* Sections */
.section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.section-title {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: none;
    letter-spacing: 0;
    margin-bottom: 0;
}

/* Surgery Options */
.surgery-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.surgery-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--bg-secondary);
    padding: 12px var(--spacing-md);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
    text-align: left;
}

.surgery-option:hover {
    background: var(--bg-tertiary);
    border-color: var(--text-muted);
}

.surgery-option.active {
    border-color: var(--accent-highlight);
    background: var(--bg-secondary);
}

.surgery-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.icon-img {
    width: 26px;
    height: 26px;
    filter: invert(60%) sepia(5%) saturate(200%) hue-rotate(200deg) brightness(90%) contrast(90%);
    transition: filter var(--transition-normal);
}

.surgery-option.active .icon-img {
    filter: invert(65%) sepia(50%) saturate(5000%) hue-rotate(325deg) brightness(100%) contrast(100%);
}

/* Phase Toggle */
.phase-section {
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-lg);
}

.phase-label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    min-width: 38px;
}

.phase-toggle {
    display: flex;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-full);
    padding: 4px;
    border: 1px solid var(--border-color);
    flex: 1;
}

.phase-btn {
    flex: 1;
    padding: 8px var(--spacing-md);
    border: none;
    border-radius: var(--border-radius-full);
    background: transparent;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.phase-btn:hover:not(.active) {
    color: var(--text-primary);
}

.phase-btn.active {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* Recording Section with Divider */
.recording-section {
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

/* Recording Controls */
.recording-controls {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.record-btn {
    flex: 1;
    padding: 14px var(--spacing-xl);
    background: var(--accent-red);
    border: none;
    border-radius: var(--border-radius-full);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.record-btn:hover {
    background: var(--accent-red-hover);
}

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

.upload-btn {
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: none;
    border-radius: 50%;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

/* Transcript Editor */
.transcript-container {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.transcript-editor {
    width: 100%;
    min-height: 90px;
    padding: var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.875rem;
    line-height: 1.5;
    resize: none;
    outline: none;
}

.transcript-editor::placeholder {
    color: var(--text-muted);
}

.transcript-editor:focus {
    color: var(--text-primary);
}

/* Generate Button */
.generate-btn {
    width: 100%;
    padding: 14px var(--spacing-xl);
    background: var(--accent-blue);
    border: none;
    border-radius: var(--border-radius-full);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    margin-top: var(--spacing-sm);
}

.generate-btn:hover {
    background: var(--accent-blue-light);
}

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

/* Responsive Styles - Tablet and Desktop */
@media (min-width: 768px) {
    .main-content {
        max-width: 480px;
        padding: var(--spacing-xl);
        padding-top: 60px;
    }

    .greeting {
        font-size: 1.75rem;
    }
}

@media (min-width: 1024px) {
    .app-container {
        justify-content: center;
        padding: var(--spacing-xl);
    }

    .main-content {
        max-width: 480px;
        padding: var(--spacing-xl);
    }
}

/* Focus States for Accessibility */
button:focus-visible,
.patient-input:focus-visible,
.transcript-editor:focus-visible {
    outline: 2px solid var(--accent-blue);
    outline-offset: 2px;
}

/* Selection Color */
::selection {
    background: rgba(99, 102, 241, 0.3);
    color: var(--text-primary);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 3px;
}

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

/* Recording State */
.record-btn.recording {
    background: #b91c1c;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.5);
    }

    50% {
        box-shadow: 0 0 0 12px rgba(239, 68, 68, 0);
    }
}

/* Avatar Modal */
.avatar-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.avatar-modal.active {
    opacity: 1;
    visibility: visible;
}

.avatar-modal-content {
    position: relative;
    width: 100%;
    max-width: 500px;
    margin: var(--spacing-lg);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

.close-modal-btn {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    border: none;
    border-radius: 50%;
    color: var(--text-primary);
    cursor: pointer;
    z-index: 10;
    transition: all var(--transition-fast);
}

.close-modal-btn:hover {
    background: rgba(0, 0, 0, 0.7);
    transform: scale(1.1);
}

.avatar-video-container {
    width: 100%;
    aspect-ratio: 1 / 1;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.avatar-video-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
}

.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #22c55e;
    animation: blink 2s ease-in-out infinite;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.status-text {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    z-index: 1100;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

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

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--bg-tertiary);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-text {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* Link Modal Styles */
.link-modal-content {
    padding: 32px;
    text-align: center;
}

.link-modal-content h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.link-modal-content>p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

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

.link-input-wrapper {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.link-input {
    flex: 1;
    padding: 12px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-family: monospace;
    font-size: 0.8125rem;
}

.copy-btn {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-blue);
    border: none;
    border-radius: var(--border-radius-md);
    color: white;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.copy-btn:hover {
    background: var(--accent-blue-light);
}

.link-expiry {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.modal-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.preview-btn {
    padding: 12px 24px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-full);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.done-btn {
    padding: 12px 24px;
    background: var(--accent-blue);
    border: none;
    border-radius: var(--border-radius-full);
    color: white;
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.done-btn:hover {
    background: var(--accent-blue-light);
}