/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: #818cf8;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --bg-gradient-light: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    --surface-color: #ffffff;
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --text-primary: #1e293b;
    --text-muted: #94a3b8;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -1px rgb(0 0 0 / 0.06);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -2px rgb(0 0 0 / 0.05);
    --shadow-colored: 0 10px 25px -5px rgba(99, 102, 241, 0.3);
    --radius: 12px;
    --radius-sm: 6px;
    --radius-lg: 16px;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --touch-target: 44px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-gradient-light);
    background-attachment: fixed;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* App Container */
.app-container {
    max-width: 1200px;
    margin: 0 auto;
    min-height: 100vh;
    background-color: transparent;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    margin-bottom: var(--spacing-xl);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.app-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: #ffffff;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin: 0;
    text-transform: uppercase;
    flex: 1;
    text-align: center;
}

.app-header h1::before {
    content: '💊';
    font-size: 1.75rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

/* Logout Button */
.btn-logout {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius);
    color: #ffffff;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    min-height: var(--touch-target);
}

.btn-logout:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

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

.btn-logout svg {
    flex-shrink: 0;
}

.logout-text {
    white-space: nowrap;
}

@media (max-width: 640px) {
    .app-header h1 {
        font-size: 1.5rem;
        letter-spacing: 0.5px;
    }
    
    .app-header h1::before {
        font-size: 1.5rem;
    }
    
    .btn-logout {
        padding: 0.5rem;
    }
    
    .logout-text {
        display: none;
    }
}

/* Main Content */
.main-content {
    padding: 0 var(--spacing-lg) var(--spacing-xl);
    padding-bottom: calc(var(--spacing-xl) + 100px); /* Space for sticky actions */
}

/* Prescription Date Section */
.prescription-date-section {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(139, 92, 246, 0.08) 100%);
    border: 1px solid rgba(99, 102, 241, 0.15);
    border-radius: var(--radius);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    float: right;
}

.clearfix {
    clear: both;
}

.prescription-date-section:hover {
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12) 0%, rgba(139, 92, 246, 0.12) 100%);
}

.prescription-date-section label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.prescription-date-section input {
    font-size: 0.9375rem;
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background-color: var(--surface-color);
    min-width: 150px;
    transition: all 0.2s ease;
}

.prescription-date-section input:hover {
    border-color: var(--primary-light);
}

.prescription-date-section input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

@media (max-width: 640px) {
    .prescription-date-section {
        float: none;
        display: flex;
        width: 100%;
        justify-content: space-between;
    }
    
    .prescription-date-section input {
        flex: 1;
        min-width: auto;
    }
}

/* Form Sections */
.form-section {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: var(--surface-color);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    animation: fadeIn 0.4s ease-out;
}

.form-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.form-section:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.form-section:hover::before {
    opacity: 1;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-light);
}

.section-header h2 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

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

.form-section h2 {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.form-section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    border-radius: 2px;
}

/* Form Grid */
.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 640px) {
    .form-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

/* Form Groups */
.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.3px;
    text-transform: uppercase;
    font-size: 0.75rem;
}

.form-group input,
.form-group textarea {
    font-family: inherit;
    font-size: 1rem;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    background-color: var(--surface-color);
    color: var(--text-primary);
    transition: all 0.2s ease;
    -webkit-appearance: none;
    appearance: none;
}

.form-group input:hover,
.form-group textarea:hover {
    border-color: var(--primary-light);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1), var(--shadow-sm);
    transform: translateY(-1px);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

/* Medicines Container */
.medicines-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.medicine-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr auto;
    gap: var(--spacing-md);
    align-items: end;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: var(--radius);
    border: 2px solid var(--border-light);
    transition: all 0.3s ease;
    position: relative;
}

.medicine-row:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.medicine-row::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.medicine-row:hover::before {
    opacity: 1;
}

@media (max-width: 640px) {
    .medicine-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .medicine-row .form-group {
        width: 100%;
    }
}

.medicine-row .form-group {
    margin-bottom: 0;
}

.btn-remove {
    background: linear-gradient(135deg, var(--danger-color), var(--danger-hover));
    color: white;
    border: none;
    padding: var(--spacing-sm);
    border-radius: var(--radius);
    cursor: pointer;
    min-width: var(--touch-target);
    min-height: var(--touch-target);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

.btn-remove:hover {
    background: linear-gradient(135deg, var(--danger-hover), var(--danger-color));
    box-shadow: var(--shadow-md);
    transform: scale(1.05);
}

.btn-remove:active {
    transform: scale(0.95);
}

/* Buttons */
.btn {
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    padding: 0.875rem 1.75rem;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: var(--touch-target);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn > * {
    position: relative;
    z-index: 2;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn:active {
    transform: scale(0.97);
    box-shadow: var(--shadow-sm);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    box-shadow: var(--shadow-colored);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
    box-shadow: var(--shadow-lg), var(--shadow-colored);
    transform: translateY(-2px);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color), var(--danger-hover));
    color: white;
}

.btn-danger:hover {
    background: linear-gradient(135deg, var(--danger-hover), var(--danger-color));
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-small {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    min-height: 40px;
    font-weight: 600;
}

/* Form Actions */
.form-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

.sticky-actions {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.95));
    backdrop-filter: blur(20px);
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 2px solid var(--border-light);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
    z-index: 50;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.sticky-actions .btn {
    flex: 1;
    min-width: 120px;
    max-width: 200px;
}

@media (max-width: 640px) {
    .sticky-actions {
        padding: var(--spacing-sm);
    }
    
    .sticky-actions .btn {
        flex: 1 1 calc(50% - 0.25rem);
        min-width: calc(50% - 0.25rem);
        max-width: none;
    }
}

/* Responsive Adjustments */
@media (max-width: 640px) {
    .main-content {
        padding: var(--spacing-md);
        padding-bottom: calc(var(--spacing-xl) + 100px);
    }
    
    .form-section {
        padding: var(--spacing-md);
    }
    
    .app-header h1 {
        font-size: 1.25rem;
    }
}

/* Focus Visible for Accessibility */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Additional Visual Enhancements */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Input placeholder styling */
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.6;
}

/* Enhanced focus states */
.form-group input:focus::placeholder,
.form-group textarea:focus::placeholder {
    opacity: 0.4;
}

/* Section numbering visual enhancement */
.form-section:nth-child(1)::before {
    background: linear-gradient(90deg, #6366f1, #8b5cf6);
}

.form-section:nth-child(2)::before {
    background: linear-gradient(90deg, #06b6d4, #3b82f6);
}

.form-section:nth-child(3)::before {
    background: linear-gradient(90deg, #10b981, #06b6d4);
}

.form-section:nth-child(4)::before {
    background: linear-gradient(90deg, #f59e0b, #ef4444);
}

.form-section:nth-child(5)::before {
    background: linear-gradient(90deg, #8b5cf6, #ec4899);
}

/* Login Page Styles */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 200px);
    padding: var(--spacing-xl);
}

.login-card {
    background: var(--surface-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xl);
    width: 100%;
    max-width: 450px;
    position: relative;
    overflow: hidden;
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
}

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

.login-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.login-header p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.login-actions {
    margin-top: var(--spacing-lg);
}

.login-actions .btn {
    width: 100%;
    font-size: 1.1rem;
    padding: 1rem;
}

.error-message {
    background-color: #fee2e2;
    color: #991b1b;
    padding: var(--spacing-md);
    border-radius: var(--radius);
    margin-top: var(--spacing-md);
    border: 1px solid #fecaca;
    font-size: 0.9rem;
    font-weight: 500;
}

.error-message::before {
    content: '⚠️ ';
    margin-right: var(--spacing-sm);
}

@media (max-width: 640px) {
    .login-container {
        padding: var(--spacing-md);
        min-height: calc(100vh - 150px);
    }
    
    .login-card {
        padding: var(--spacing-lg);
    }
    
    .login-header h2 {
        font-size: 1.5rem;
    }
}