/* ==========================================================================
   Components — butonlar, kartlar, formlar, etiketler, hata mesajları
   ========================================================================== */

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 12px 28px;
    border-radius: var(--radius-pill);
    font-family: inherit;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, color 0.3s ease;
    border: 2px solid transparent;
    text-decoration: none;
    line-height: 1.4;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* ---- Section header ---- */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
}

/* ---- Generic card ---- */
.card {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* ---- Tags ---- */
.tag {
    display: inline-block;
    background: var(--secondary-color);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    margin: 0.2rem;
}

/* ---- Forms ---- */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.9rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-dark);
    background: white;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

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

/* ---- Notifications (JS oluşturur) ---- */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #2196f3;
    color: white;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 10000;
    transform: translateX(120%);
    transition: transform 0.3s ease;
    max-width: 320px;
}

.notification.visible {
    transform: translateX(0);
}

.notification-success { background: #4caf50; }
.notification-error   { background: #f44336; }
.notification-info    { background: #2196f3; }

.notification-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.notification-close {
    color: white;
    font-size: 1.4rem;
    line-height: 1;
    background: none;
    border: none;
    cursor: pointer;
}

/* ---- Error / empty states ---- */
.error-message,
.no-articles {
    text-align: center;
    padding: 3rem 1.5rem;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    margin: 2rem auto;
    max-width: 600px;
}

.error-message i,
.no-articles i {
    font-size: 3rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
    display: block;
}

.error-message h2,
.no-articles h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.error-message p,
.no-articles p {
    color: var(--text-light);
}

/* ---- Scroll progress bar ---- */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0;
    background: var(--gradient-primary);
    z-index: 10001;
    transition: width 0.1s ease;
}