/* =========================
   ROOT VARIABLES
========================= */

:root {

    /* COLORS */

    --clr-primary: #9f1414;
    --clr-primary-dark: #741010;

    --clr-bg: #f5f5f5;
    --clr-surface: #ffffff;

    --clr-text: #1f1f1f;
    --clr-text-soft: #666666;

    --clr-border: #dddddd;
    --clr-input-bg: #fafafa;

    --clr-focus: rgba(159, 20, 20, 0.15);

    /* SHADOW */

    --shadow-card:
        0 10px 30px rgba(0, 0, 0, 0.08);

    /* RADIUS */

    --radius-none: 0;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;

    /* TYPOGRAPHY */

    --fs-xs: 0.82rem;
    --fs-sm: 0.9rem;
    --fs-base: 0.95rem;
    --fs-md: 1rem;
    --fs-lg: 1.15rem;
    --fs-xl: 1.35rem;

    /* SPACING */

    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;

    /* TRANSITION */

    --transition:
        all 0.25s ease;
}

/* =========================
   RESET
========================= */

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

html {
    scroll-behavior: smooth;
}

body {
    background: var(--clr-bg);
    color: var(--clr-text);

    font-family: "Poppins", sans-serif;
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
textarea,
select {
    font: inherit;
}

/* =========================
   LAYOUT
========================= */

.section {
    min-height: 100vh;
    padding: 5rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 1100px;
    margin-inline: auto;
}

.auth-container {
    max-width: 840px;
}

/* =========================
   SECTION HEADING
========================= */

.section-heading {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    margin: 0 auto;
    padding: clamp(1.5rem, 4vw, 2.5rem);
    background:
        linear-gradient(135deg, rgba(159, 20, 20, 0.08), rgba(159, 20, 20, 0) 44%),
        var(--clr-surface);
    border: 1px solid rgba(159, 20, 20, 0.12);
    border-top: 5px solid var(--clr-primary);
    box-shadow: var(--shadow-card);
    text-align: center;
    color: var(--clr-text);
}

.section-heading::before,
.section-heading::after {
    content: "";
    position: absolute;
    z-index: -1;
    border-radius: 999px;
    pointer-events: none;
}

.section-heading::before {
    width: 210px;
    height: 210px;
    top: -120px;
    right: -85px;
    background: rgba(159, 20, 20, 0.09);
}

.section-heading::after {
    width: 130px;
    height: 130px;
    bottom: -75px;
    left: -45px;
    border: 24px solid rgba(159, 20, 20, 0.06);
}

.section-heading img {
    width: min(330px, 86%);
    display: block;
    margin: 0 auto var(--space-lg);
    object-fit: contain;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    margin-bottom: var(--space-sm);
    padding: 0.35rem 0.85rem;

    background: rgba(159, 20, 20, 0.08);
    color: var(--clr-primary);
    border: 1px solid rgba(159, 20, 20, 0.14);

    font-size: var(--fs-xs);
    font-weight: 700;
    letter-spacing: 1.6px;
    line-height: 1.2;
    text-transform: uppercase;
}

.section-heading h1 {
    max-width: 760px;
    margin: 0 auto var(--space-sm);

    color: var(--clr-text);

    font-family: "Playfair Display", serif;
    font-size: clamp(2rem, 5vw, 3.25rem);
    font-weight: 700;
    line-height: 1.08;
    text-transform: uppercase;
}

.section-date {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    margin-bottom: var(--space-md);
    padding: 0.45rem 1.1rem;

    background: var(--clr-primary);
    color: #ffffff;

    font-size: var(--fs-base);
    font-weight: 700;
    letter-spacing: 0.4px;
    line-height: 1.2;
}

.section-org {
    max-width: 720px;
    margin: 0 auto var(--space-md);

    color: var(--clr-primary-dark);
    font-size: var(--fs-sm);
    font-weight: 600;
    line-height: 1.65;
    text-transform: uppercase;
}

.section-desc {
    max-width: 730px;
    margin: 0 auto;
    color: var(--clr-text-soft);
    font-size: var(--fs-sm);
    line-height: 1.75;
}

.btn-home {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: var(--space-lg);
    padding: 0.7rem 1.2rem;
    background: transparent;
    color: var(--clr-primary);
    border: 1px solid rgba(159, 20, 20, 0.25);
    text-decoration: none;
    /* border-radius: var(--radius-sm); */
    font-size: var(--fs-sm);
    font-weight: 600;
    transition: var(--transition);
}

.btn-home:hover {
    background: var(--clr-primary);
    color: #ffffff;
}


/* =========================
   CARD
========================= */

.registration-card {
    overflow: hidden;
    background: var(--clr-surface);
    border-radius: var(--radius-none);
    box-shadow: var(--shadow-card);
}

.card-header {
    padding: var(--space-lg) var(--space-xl);

    background: var(--clr-primary);
}

.card-header h3 {
    color: #ffffff;

    font-size: var(--fs-xl);
    font-weight: 600;
}

.card-body {
    padding: var(--space-xl);
}

/* =========================
   FORM SECTION
========================= */

.form-section+.form-section {
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);

    border-top: 1px solid var(--clr-border);
}

.form-section-header {
    margin-bottom: var(--space-lg);
}

.form-section-header h4 {
    color: var(--clr-primary);

    font-size: var(--fs-lg);
    font-weight: 600;
}

/* =========================
   FORM GRID
========================= */

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.single-column {
    grid-template-columns: 1fr;
}

/* =========================
   FORM GROUP
========================= */

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    margin-bottom: 0.65rem;

    color: var(--clr-text);

    font-size: var(--fs-base);
    font-weight: 500;
}

.required {
    color: var(--clr-primary);
    font-weight: 600;
}

/* =========================
   INPUTS
========================= */

.form-control {
    width: 100%;
    height: 54px;

    padding-inline: 1rem;

    border: 1px solid var(--clr-border);
    outline: none;

    background: var(--clr-input-bg);

    color: var(--clr-text);
    font-size: var(--fs-base);

    transition: var(--transition);
}

textarea.form-control {
    min-height: 150px;

    resize: vertical;

    padding: 1rem;
}

select.form-control {
    cursor: pointer;
}

.form-control::placeholder {
    color: #999999;
}

.form-control:focus {
    border-color: var(--clr-primary);

    background: #ffffff;

    box-shadow: 0 0 0 4px var(--clr-focus);
}

/* =========================
   AUTH EXTRA
========================= */

.auth-extra {
    margin-top: var(--space-md);

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
}

/* =========================
   CHECKBOX
========================= */

.checkbox-label {
    display: inline-flex !important;
    align-items: center;
    gap: 0.7rem;

    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;

    accent-color: var(--clr-primary);

    cursor: pointer;
}

.checkbox-label span {
    color: var(--clr-text-soft);

    font-size: var(--fs-base);
}

/* =========================
   LINKS
========================= */

.auth-link {
    color: var(--clr-primary);

    font-size: var(--fs-sm);
    font-weight: 500;

    transition: var(--transition);
}

.auth-link:hover {
    color: var(--clr-primary-dark);
}

/* =========================
   BUTTONS
========================= */

.form-footer {
    margin-top: var(--space-2xl);

    display: flex;
    justify-content: center;
}

.btn-submit {
    min-width: 200px;
    height: 54px;

    padding-inline: 1.5rem;

    border: none;
    outline: none;

    background: var(--clr-primary);
    color: #ffffff;

    cursor: pointer;

    font-size: var(--fs-base);
    font-weight: 600;
    letter-spacing: 0.5px;

    transition: var(--transition);
}

.btn-submit:hover {
    background: var(--clr-primary-dark);

    transform: translateY(-2px);
}

/* =========================
   AUTH BOTTOM
========================= */

.auth-bottom-text {
    margin-top: var(--space-xl);

    text-align: center;
}

.auth-bottom-text p {
    color: var(--clr-text-soft);

    font-size: var(--fs-base);
}

.auth-bottom-text a {
    margin-left: 0.3rem;
}

/* =========================
   ALERT / MESSAGE BOX
========================= */

.auth-message {
    margin-bottom: var(--space-lg);
    padding: 1rem 1.25rem;

    border-left: 4px solid var(--clr-primary);

    background: rgba(159, 20, 20, 0.08);

    color: var(--clr-primary);

    font-size: var(--fs-sm);
    font-weight: 500;
}

/* =========================
   RESPONSIVE
========================= */

@media (max-width: 768px) {

    .section {
        padding: 4rem 1rem;
    }

    .card-body {
        padding: var(--space-lg);
    }

    .section-heading {
        margin-bottom: var(--space-lg);
        padding: var(--space-lg);
    }

    .section-heading img {
        width: min(260px, 92%);
        margin-bottom: var(--space-md);
    }

    .section-heading h1 {
        font-size: clamp(1.7rem, 9vw, 2.35rem);
    }

    .section-date {
        width: 100%;
        max-width: 320px;
    }

    .form-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .auth-extra {
        flex-direction: column;
        align-items: flex-start;
    }

    .form-footer {
        justify-content: stretch;
    }

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