/* ========================================
   Components — Reusable UI Components
   ======================================== */

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    font-family: var(--font-family);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    border: none;
    outline: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn--primary {
    background: var(--color-primary);
    color: #fff;
}

.btn--primary:hover {
    background: var(--color-primary-light);
    transform: scale(1.02);
    box-shadow: var(--shadow-glow);
}

.btn--primary:active {
    transform: scale(0.98);
}

.btn--outline {
    background: transparent;
    color: var(--color-text-primary);
    border: 1.5px solid var(--color-border);
}

.btn--outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(41, 151, 255, 0.05);
}

.btn--full {
    width: 100%;
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-nav);
    padding: 1.25rem 0;
    transition: all var(--transition-base);
}

.nav__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo img,
.nav__logo-img {
    height: 28px;
    width: auto;
    object-fit: contain;
}

.nav__links {
    display: none;
    align-items: center;
    gap: var(--space-xl);
}

.nav__link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: #ffffff;
    transition: color var(--transition-fast);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--color-primary);
    transition: width var(--transition-base);
}

.nav__link:hover {
    color: var(--color-text-primary);
}

.nav__link:hover::after {
    width: 100%;
}

/* Scrolled state */
.nav--scrolled {
    background: rgba(0, 0, 0, 0.72);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    backdrop-filter: saturate(180%) blur(20px);
    padding: 0.75rem 0;
}

/* Hamburger Menu Button */
.nav__menu-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    gap: 6px;
    z-index: calc(var(--z-nav) + 1);
}

.nav__menu-btn span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--color-text-primary);
    transition: all var(--transition-base);
    transform-origin: center;
}

.nav__menu-btn.active span:nth-child(1) {
    transform: translateY(7.5px) rotate(45deg);
}

.nav__menu-btn.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.nav__menu-btn.active span:nth-child(3) {
    transform: translateY(-7.5px) rotate(-45deg);
}

/* ===== Mobile Menu ===== */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-nav);
    background: rgba(0, 0, 0, 0.95);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-slow);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu__links {
    text-align: center;
}

.mobile-menu__link {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    padding: var(--space-md) 0;
    transition: color var(--transition-fast);
}

.mobile-menu__link:hover {
    color: var(--color-primary);
}

/* ===== Form Elements ===== */
.form__group {
    margin-bottom: var(--space-lg);
}

.form__group input,
.form__group textarea {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
    outline: none;
}

.form__group input::placeholder,
.form__group textarea::placeholder {
    color: var(--color-text-tertiary);
}

.form__group input:focus,
.form__group textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(41, 151, 255, 0.15);
}

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

/* ===== Stat Component ===== */
.stat {
    text-align: center;
    padding: var(--space-md);
}

.stat__number {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    line-height: 1;
}

.stat__suffix {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.stat__label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-xs);
}