/* RSG Expense App - Mobile-First Styles */

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

:root {
    --primary-color: #1a5f2a;
    --primary-dark: #144a21;
    --primary-light: #2d8a3e;
    --background: #f5f5f5;
    --card-bg: #ffffff;
    --text-primary: #333333;
    --text-secondary: #666666;
    --border-color: #dddddd;
    --error-color: #d32f2f;
    --success-color: #2e7d32;
    --safe-area-top: env(safe-area-inset-top, 0px);
    --safe-area-bottom: env(safe-area-inset-bottom, 0px);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

.app-container {
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.app-header {
    background: var(--primary-color);
    color: white;
    padding: calc(var(--safe-area-top) + 16px) 16px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.app-header h1 {
    font-size: 1.25rem;
    font-weight: 600;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-logo {
    height: 36px;
    width: auto;
}

.sign-in-btn {
    background: white;
    color: var(--primary-color);
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

.sign-in-btn:hover {
    opacity: 0.9;
}

.sign-in-btn.signed-in {
    background: var(--primary-light);
    color: white;
    font-size: 0.75rem;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 16px;
    padding-bottom: calc(var(--safe-area-bottom) + 16px);
}

/* Auth Message */
.auth-message {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

/* Form Styles */
.expense-form {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    font-size: 0.875rem;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background: white;
    color: var(--text-primary);
    -webkit-appearance: none;
    appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 95, 42, 0.1);
}

.form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.form-group textarea {
    resize: vertical;
    min-height: 60px;
}

/* Photo Section */
.photo-section {
    margin-top: 8px;
}

.capture-btn {
    width: 100%;
    padding: 16px;
    background: var(--background);
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s;
}

.capture-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.camera-icon {
    font-size: 1.5rem;
}

.photo-preview {
    position: relative;
    margin-top: 12px;
}

.photo-preview img {
    width: 100%;
    border-radius: 8px;
    display: block;
}

.remove-photo {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 32px;
    height: 32px;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Submit Button */
.submit-btn {
    width: 100%;
    padding: 16px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.submit-btn:hover {
    background: var(--primary-dark);
}

.submit-btn:disabled {
    background: var(--border-color);
    cursor: not-allowed;
}

/* Success Message */
.success-message {
    text-align: center;
    padding: 60px 20px;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.success-icon {
    width: 80px;
    height: 80px;
    background: var(--success-color);
    color: white;
    border-radius: 50%;
    font-size: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.success-message h2 {
    color: var(--success-color);
    margin-bottom: 8px;
}

.success-message p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.new-expense-btn {
    padding: 12px 32px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

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

.loading-overlay p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Toast */
.toast {
    position: fixed;
    bottom: calc(var(--safe-area-bottom) + 24px);
    left: 50%;
    transform: translateX(-50%);
    background: #333;
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 0.875rem;
    z-index: 1001;
    opacity: 0;
    transition: opacity 0.3s;
}

.toast.show {
    opacity: 1;
}

.toast.error {
    background: var(--error-color);
}

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

/* Input placeholder styling */
::placeholder {
    color: #aaa;
}

/* iOS input styling fix */
input[type="date"] {
    min-height: 48px;
}

/* OCR Loading Overlay */
.ocr-loading {
    background: rgba(0, 0, 0, 0.85);
}

.ocr-loading p {
    color: white;
}

.ocr-scanner {
    width: 120px;
    height: 120px;
    border: 3px solid var(--primary-light);
    border-radius: 12px;
    position: relative;
    overflow: hidden;
    margin-bottom: 20px;
}

.scanner-line {
    position: absolute;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary-light), transparent);
    animation: scan 1.5s ease-in-out infinite;
}

@keyframes scan {
    0% {
        top: 0;
    }
    50% {
        top: calc(100% - 3px);
    }
    100% {
        top: 0;
    }
}

/* Extracted from receipt badge */
.form-group.extracted {
    position: relative;
}

.form-group.extracted::after {
    content: 'From receipt';
    position: absolute;
    top: 0;
    right: 0;
    background: var(--primary-light);
    color: white;
    font-size: 0.625rem;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group.extracted input,
.form-group.extracted textarea,
.form-group.extracted select {
    border-color: var(--primary-light);
    background: rgba(45, 138, 62, 0.05);
}

/* Field error highlighting */
.form-group.field-error label,
.photo-section.field-error + label {
    color: var(--error-color);
}

.form-group.field-error input,
.form-group.field-error textarea,
.form-group.field-error select {
    border-color: var(--error-color);
    background: rgba(211, 47, 47, 0.05);
}

.field-error .capture-btn {
    border-color: var(--error-color);
    color: var(--error-color);
}

/* Shake animation for missing fields */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-5px); }
    40%, 80% { transform: translateX(5px); }
}

.shake {
    animation: shake 0.5s ease-in-out;
}