/* css/common.css */
/* Font imports removed: local font-face is managed in css/font.css. */
html {
    font-size: 10px;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text-default);
    background-color: var(--color-paper-base);
    background-image: url('../images/common/bg_paper_grid.jpg');
    background-repeat: repeat;
    background-position: center top;
    background-size: cover;
    font-size: var(--font-size-body);
    line-height: 1.6;
}

/* Base elements */
a {
    transition: color 0.3s ease, opacity 0.3s ease;
}

button {
    transition: background-color 0.3s ease, color 0.3s ease;
}

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

input, textarea {
    font-family: var(--font-sans);
    outline: none;
}

/* Typography components */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-family: var(--font-label);
    font-size: var(--font-size-section-title-lg);
    color: var(--color-brand-primary);
    text-transform: uppercase;
}

.section-index {
    font-family: var(--font-label);
    font-size: var(--font-size-content-title);
    color: var(--color-accent-red);
}

/* Buttons */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: var(--font-weight-semibold);
    text-align: center;
}

.button--navy {
    background-color: var(--color-brand-primary);
    color: var(--color-white);
}

.button--navy:hover {
    background-color: var(--color-brand-deep);
}

.button--pink {
    background-color: var(--color-accent-pink);
    color: var(--color-white);
}

.button--pink:hover {
    background-color: var(--color-button-pink-hover);
}

/* Form */
.form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-label {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-strong);
    display: block;
    margin-bottom: 8px;
}

.form-input, .form-textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--color-line-form);
    border-radius: 4px;
    background-color: var(--color-white);
    color: var(--color-text-strong);
    transition: border-color 0.3s ease;
}

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

.form-input:focus, .form-textarea:focus {
    border-color: var(--color-line-form-active);
}

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

/* State & Utilities */
.is-active {
    display: block !important;
}

.is-hidden {
    display: none !important;
}

.has-paper-texture {
    background-color: var(--color-paper-cream);
    box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.05);
}

.has-beige-texture {
    background-color: var(--color-paper-sand);
}