/* ===== CSS Variables (Shared) ===== */
:root {
    /* Colors */
    --pink-lightest: #fff5f7;
    --pink-light: #fff0f3;
    --pink-pale: #ffe4ec;
    --pink-soft: #ffb6c1;
    --pink-medium: #ff91a4;
    --pink-accent: #e75480;
    --pink-dark: #c44569;
    --pink-darker: #a33654;
    
    --cream: #fffaf0;
    --white: #ffffff;
    
    --text-dark: #2d2a2e;
    --text-medium: #4a3f44;
    --text-light: #6b5b62;
    --text-muted: #9a8a92;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(199, 112, 138, 0.08);
    --shadow-sm: 0 2px 8px rgba(199, 112, 138, 0.1);
    --shadow-md: 0 4px 20px rgba(199, 112, 138, 0.15);
    --shadow-lg: 0 8px 30px rgba(199, 112, 138, 0.2);
    --shadow-xl: 0 12px 40px rgba(199, 112, 138, 0.25);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Container */
    --container-max: 1200px;
    --container-narrow: 800px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Quicksand', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-medium);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-dark);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: clamp(1.1rem, 2vw, 1.25rem); }

p {
    font-size: 1rem;
    line-height: 1.7;
}

a {
    color: var(--pink-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--pink-dark);
}

strong {
    font-weight: 600;
}

/* ===== Container ===== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.container-narrow {
    max-width: var(--container-narrow);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.5rem;
    font-family: 'Quicksand', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-full);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--pink-accent), var(--pink-dark));
    color: var(--white);
    border-color: transparent;
    box-shadow: var(--shadow-md);
}

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

.btn-outline {
    background: transparent;
    color: var(--pink-accent);
    border-color: var(--pink-accent);
}

.btn-outline:hover {
    background: var(--pink-accent);
    color: var(--white);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-full {
    width: 100%;
}

.btn-icon {
    font-size: 1.2em;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* ===== Forms ===== */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 600;
    color: var(--text-medium);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 0.875rem 1rem;
    font-family: 'Quicksand', sans-serif;
    font-size: 1rem;
    color: var(--text-dark);
    background: var(--white);
    border: 2px solid var(--pink-pale);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--pink-accent);
    box-shadow: 0 0 0 3px rgba(231, 84, 128, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-hint {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

.form-error {
    color: #e53e3e;
    font-size: 0.875rem;
    margin-top: var(--space-xs);
}

.input-with-addon {
    display: flex;
    align-items: stretch;
}

.input-addon {
    display: flex;
    align-items: center;
    padding: 0 1rem;
    background: var(--pink-pale);
    color: var(--text-medium);
    font-size: 0.9rem;
    border: 2px solid var(--pink-pale);
    white-space: nowrap;
}

.input-addon-left {
    border-right: none;
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.input-addon-right {
    border-left: none;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.input-with-addon .form-input {
    border-radius: 0;
}

.input-with-addon .form-input:first-child {
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.input-with-addon .form-input:last-child {
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

/* ===== Cards ===== */
.card {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--space-xl);
}

.card-header {
    margin-bottom: var(--space-lg);
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.card-description {
    color: var(--text-light);
}

/* ===== Utilities ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-muted { color: var(--text-muted); }
.text-light { color: var(--text-light); }
.text-pink { color: var(--pink-accent); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mt-3 { margin-top: var(--space-lg); }
.mt-4 { margin-top: var(--space-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }
.mb-4 { margin-bottom: var(--space-xl); }

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===== Loading States ===== */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--pink-pale);
    border-top-color: var(--pink-accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-lg);
    }
    
    .btn-large {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}