/* ========================================
   Pens Custom Plugin Styles (Dark Glassy Teal Theme)
   ======================================== */

:root {
    --accent: #14b8a6;
    --accent-dark: #0d9488;
    --accent-light: #5eead4;
    --surface: rgba(30, 41, 59, 0.75);
    --surface-hover: rgba(30, 41, 59, 0.95);
    --border: rgba(20, 184, 166, 0.2);
    --border-strong: rgba(20, 184, 166, 0.45);
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --bg: #0b1120;
    --glass-blur: 16px;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 4px 15px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 25px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 35px rgba(0, 0, 0, 0.5), 0 0 20px rgba(20, 184, 166, 0.15);
}

/* Hero Slider */
.hero-slider {
    position: relative;
    overflow: hidden;
    min-height: 460px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(11, 17, 32, 0.98) 100%);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin: 2rem 0;
    box-shadow: var(--shadow-md);
    width: 100%;
}

.hero-slider__track {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-slide {
    display: none;
    width: 100%;
    padding: 4.5rem 2rem 4rem;
    text-align: center;
    box-sizing: border-box;
}

.hero-slide--active {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.4s ease-out;
}

.hero-slide__inner {
    width: 100%;
    max-width: 820px;
    margin: 0 auto;
    text-align: center;
    padding: 0 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.hero-slide h1 {
    font-size: clamp(2rem, 4.5vw, 3.2rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 1rem;
    color: #ffffff !important;
    text-align: center;
    width: 100%;
    max-width: 100%;
}

.hero-slide h1 span {
    color: var(--accent) !important;
}

.hero-slide p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 2rem;
    text-align: center;
    width: 100%;
}

.hero-slide .btn-primary {
    margin: 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.hero-slider__controls {
    position: absolute;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.hero-slider__prev,
.hero-slider__next {
    background: var(--surface);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: 50%;
    width: 36px;
    height: 36px;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.hero-slider__prev:hover,
.hero-slider__next:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    transform: scale(1.05);
}

.hero-slider__dots {
    display: flex;
    gap: 0.5rem;
}

.hero-slider__dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-strong);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.hero-slider__dot--active {
    background: var(--accent);
    transform: scale(1.2);
}

/* Sections */
.section {
    padding: 3.5rem 0;
}

.section__header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.section__header h2 {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
    color: #ffffff !important;
}

.section__subtitle {
    color: var(--text-muted);
    font-size: 1.05rem;
}

/* Needle Safety */
.needle-safety {
    background: transparent;
}

.needle-safety__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.needle-card {
    background: var(--surface);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.needle-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-strong);
}

.needle-card__icon {
    color: var(--accent);
    margin-bottom: 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.needle-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #ffffff !important;
}

.needle-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Comparison */
.comparison {
    background: transparent;
}

.comparison__grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 1.5rem;
    align-items: center;
}

.comparison__col {
    background: var(--surface);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
}

.comparison__col h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-align: center;
}

.comparison__col--syringe {
    border-color: rgba(239, 68, 68, 0.3);
}

.comparison__col--syringe h3 {
    color: #f87171 !important;
}

.comparison__col--pen {
    border-color: rgba(20, 184, 166, 0.4);
    box-shadow: 0 0 25px rgba(20, 184, 166, 0.1);
}

.comparison__col--pen h3 {
    color: var(--accent-light) !important;
}

.comparison__steps {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem;
}

.comparison__steps li {
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.comparison__time {
    text-align: center;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--accent);
}

.comparison__vs {
    font-weight: 900;
    font-size: 1.3rem;
    color: var(--text-muted);
    padding: 1rem;
    text-align: center;
}

/* Calculator */
.calculator__wrap {
    max-width: 960px;
    margin: 0 auto;
}

.calc-fields-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.calc-field-card {
    background: var(--surface);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.calc-field-card:hover {
    border-color: var(--border-strong);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.calc-field-card label {
    font-weight: 700;
    color: #ffffff !important;
    font-size: 0.95rem;
    display: block;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.calc-dose-input-wrap {
    display: flex;
    gap: 0.5rem;
}

.calc-dose-input-wrap input {
    flex: 1.6;
}

.calc-dose-input-wrap select {
    flex: 1.2;
    padding-right: 1.75rem !important;
}

.calc-field-card select,
.calc-field-card input[type="number"],
.calc-field-card input[type="text"] {
    background: #0f172a !important;
    border: 1px solid var(--border-strong) !important;
    border-radius: var(--radius) !important;
    color: #ffffff !important;
    padding: 0.65rem 0.85rem !important;
    width: 100%;
    font-size: 0.95rem;
    height: 48px;
    min-height: 48px;
}

.calc-btn-wrap {
    text-align: center;
    max-width: 380px;
    margin: 0 auto;
}

.calc-btn-wrap .btn-primary {
    width: 100%;
    padding: 0.9rem 2rem;
    font-size: 1.05rem;
}

.calc-card {
    background: var(--surface);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    max-width: 720px;
    margin: 0 auto;
    box-shadow: var(--shadow-md);
}

.calc-form {
    display: grid;
    gap: 1.25rem;
}

.calc-form label {
    font-weight: 600;
    color: var(--text);
    font-size: 0.95rem;
    display: block;
    margin-bottom: 0.4rem;
}

.calc-form select,
.calc-form input[type="number"],
.calc-form input[type="text"] {
    background: #0f172a !important;
    border: 1px solid var(--border-strong) !important;
    border-radius: var(--radius) !important;
    color: #ffffff !important;
    padding: 0.75rem 1rem !important;
    width: 100%;
}

.calc-result {
    margin-top: 2rem;
    padding: 1.5rem;
    background: rgba(15, 23, 42, 0.85);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-align: center;
}

.calc-result h4 {
    color: #ffffff !important;
    margin-bottom: 0.5rem;
}

/* How To Steps */
.how-to-steps {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    max-width: 800px;
    margin: 2rem auto;
}

.how-to-step {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
    background: var(--surface);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.how-to-step:hover {
    border-color: var(--border-strong);
    transform: translateX(4px);
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    min-width: 42px;
    border-radius: 50%;
    background: var(--accent);
    color: #ffffff;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: 0 0 15px rgba(20, 184, 166, 0.4);
}

.step-content h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
    color: #ffffff !important;
}

.step-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin: 0;
    line-height: 1.6;
}

/* Responsive */
@media (max-width: 768px) {
    .comparison__grid {
        grid-template-columns: 1fr;
    }
    .comparison__vs {
        display: none;
    }
    .calc-fields-grid {
        grid-template-columns: 1fr;
    }
    .calc-card {
        padding: 1.5rem;
    }
}