:root {
    --pcs-orange: #ff5f00;
    --pcs-orange-dark: #e05400;
    --pcs-orange-soft: #fff3ec;
    --pcs-card: #ffffff;
    --pcs-ink: #1a1f2b;
    --pcs-muted: #5a6479;
    --pcs-border: #e6e9ef;
    --pcs-bg: #f5f6f8;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background:
        radial-gradient(1100px 500px at 50% -220px, rgba(255, 95, 0, 0.10), transparent 70%),
        var(--pcs-bg);
    min-height: 100vh;
    padding: 0 20px 40px;
    color: var(--pcs-ink);
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--pcs-border);
    margin: 0 -20px 0;
}

.nav-inner {
    max-width: 680px;
    margin: 0 auto;
    height: 64px;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.brand-pcs {
    color: var(--pcs-orange);
    font-weight: 800;
    font-size: 26px;
    letter-spacing: 1px;
}

.brand-sub {
    color: var(--pcs-ink);
    font-weight: 500;
    font-size: 14px;
    opacity: 0.8;
}

.nav-cta {
    background: var(--pcs-orange);
    color: #ffffff;
    text-decoration: none;
    font-weight: 700;
    font-size: 14px;
    padding: 9px 18px;
    border-radius: 999px;
    transition: transform 0.15s, background 0.2s;
}

.nav-cta:hover {
    background: var(--pcs-orange-dark);
    transform: translateY(-1px);
}

/* Container / card */
.container {
    background: var(--pcs-card);
    border-radius: 20px;
    box-shadow: 0 24px 60px rgba(26, 31, 43, 0.10);
    max-width: 680px;
    width: 100%;
    padding: 0;
    margin: 32px auto 0;
    overflow: hidden;
    border: 1px solid var(--pcs-border);
}

header {
    text-align: center;
    padding: 48px 40px 24px;
    background: linear-gradient(180deg, var(--pcs-orange-soft) 0%, #ffffff 100%);
    border-bottom: 1px solid var(--pcs-border);
}

header h1 {
    color: var(--pcs-ink);
    font-size: 32px;
    margin-bottom: 8px;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.salam {
    color: var(--pcs-orange-dark);
    font-size: 15px;
    margin-bottom: 14px;
    font-weight: 600;
}

.subtitle {
    color: var(--pcs-muted);
    font-size: 15px;
}

.intro {
    background: #f8f9fb;
    border-radius: 14px;
    padding: 24px;
    margin: 32px 40px;
    border: 1px solid var(--pcs-border);
}

.intro-content {
    text-align: center;
}

.intro-text {
    color: #3a4258;
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 16px;
}

.intro-text:last-child {
    margin-bottom: 0;
    font-weight: 600;
    color: var(--pcs-ink);
}

.instructions {
    margin-bottom: 8px;
}

.instructions h2,
.form-section h2 {
    color: var(--pcs-ink);
    font-size: 24px;
    margin-bottom: 20px;
    text-align: center;
    font-weight: 800;
    letter-spacing: -0.3px;
}

.method {
    display: flex;
    align-items: center;
    background: #ffffff;
    border: 1px solid var(--pcs-border);
    border-radius: 14px;
    padding: 20px;
    margin: 0 40px 16px;
    transition: box-shadow 0.2s, transform 0.15s;
}

.method:hover {
    box-shadow: 0 10px 24px rgba(26, 31, 43, 0.08);
    transform: translateY(-2px);
}

.method.recommended {
    border: 2px solid var(--pcs-orange);
    background: var(--pcs-orange-soft);
}

.recommendation-badge {
    display: inline-block;
    background: var(--pcs-orange);
    color: #ffffff;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.6px;
}

.method-icon {
    font-size: 30px;
    margin-right: 16px;
}

.method-content h3 {
    color: var(--pcs-ink);
    font-size: 16px;
    margin-bottom: 6px;
    font-weight: 700;
}

.method-content p {
    color: var(--pcs-muted);
    font-size: 14px;
    line-height: 1.5;
}

.method-content a {
    color: var(--pcs-orange-dark);
    text-decoration: none;
    font-weight: 700;
}

.method-content a:hover {
    text-decoration: underline;
}

.steps {
    background: #f8f9fb;
    border-radius: 14px;
    padding: 24px;
    margin: 8px 40px 32px;
    border: 1px solid var(--pcs-border);
}

.steps h3 {
    color: var(--pcs-ink);
    font-size: 18px;
    margin-bottom: 16px;
    font-weight: 700;
}

.steps ol {
    color: #3a4258;
    font-size: 15px;
    line-height: 1.8;
    padding-left: 20px;
}

.steps strong {
    color: var(--pcs-orange-dark);
}

.form-section {
    margin: 0 40px 36px;
    background: #ffffff;
    border: 2px solid var(--pcs-orange);
    border-radius: 18px;
    padding: 32px 28px;
    box-shadow: 0 12px 30px rgba(255, 95, 0, 0.10);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: var(--pcs-ink);
    font-size: 15px;
    margin-bottom: 8px;
    font-weight: 600;
}

.form-group input {
    width: 100%;
    padding: 16px 18px;
    border: 1px solid var(--pcs-border);
    background: #fbfbfc;
    color: var(--pcs-ink);
    font-size: 18px;
    letter-spacing: 2px;
    font-family: 'Montserrat', monospace;
    border-radius: 12px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input::placeholder {
    color: #a7adba;
    letter-spacing: 1px;
}

.form-group input:focus {
    outline: none;
    border-color: var(--pcs-orange);
    box-shadow: 0 0 0 3px rgba(255, 95, 0, 0.18);
}

.submit-btn {
    width: 100%;
    padding: 17px;
    background: var(--pcs-orange);
    color: #ffffff;
    border: none;
    font-size: 16px;
    cursor: pointer;
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    letter-spacing: 0.3px;
    border-radius: 12px;
    transition: background-color 0.2s, transform 0.1s;
}

.submit-btn:hover {
    background: var(--pcs-orange-dark);
    transform: translateY(-1px);
}

.submit-btn:active {
    transform: translateY(0);
}

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

.message {
    margin-top: 16px;
    padding: 14px 16px;
    border-radius: 12px;
    text-align: center;
    font-size: 15px;
    font-weight: 600;
    display: none;
}

.message.success {
    background: #e8f7ec;
    color: #1c7a3e;
    border: 1px solid #b9e6c6;
    display: block;
}

.message.error {
    background: #fde8e8;
    color: #b42318;
    border: 1px solid #f5c2c0;
    display: block;
}

footer {
    text-align: center;
    color: var(--pcs-muted);
    font-size: 14px;
    padding: 24px 40px 40px;
    border-top: 1px solid var(--pcs-border);
}

@media (max-width: 600px) {
    .container {
        margin-top: 20px;
        border-radius: 16px;
    }

    .nav-inner {
        padding: 0 16px;
    }

    header {
        padding: 36px 20px 20px;
    }

    header h1 {
        font-size: 26px;
    }

    .intro,
    .method,
    .steps,
    .form-section {
        margin-left: 20px;
        margin-right: 20px;
    }

    .method {
        flex-direction: column;
        text-align: center;
    }

    .method-icon {
        margin-right: 0;
        margin-bottom: 12px;
    }

    footer {
        padding: 20px 20px 30px;
    }
}