:root {
    --page-bg: linear-gradient(160deg, #f4efe6 0%, #d7e6ea 48%, #f8fbfc 100%);
    --card-bg: rgba(255, 252, 247, 0.88);
    --card-border: rgba(27, 63, 74, 0.12);
    --text-main: #1f2a30;
    --text-soft: #5c6b73;
    --accent: #0d6c7a;
    --accent-soft: #dff1f4;
    --shadow: 0 24px 70px rgba(35, 55, 64, 0.14);
    --radius-xl: 28px;
    --radius-md: 16px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-main);
    background: var(--page-bg);
}

body.is-loading {
    overflow: hidden;
}

.page-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.form-card {
    width: min(560px, 100%);
    padding: 24px;
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    background:
        radial-gradient(circle at top right, rgba(13, 108, 122, 0.16), transparent 28%),
        radial-gradient(circle at bottom left, rgba(240, 160, 72, 0.12), transparent 30%),
        var(--card-bg);
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
    overflow: hidden;
}

.dynamic-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.field-grid {
    display: grid;
    gap: 16px;
}

.field-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.28s ease, transform 0.28s ease;
}

.field-group.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.field-group[hidden] {
    display: none;
}

.field-group label {
    font-size: 0.95rem;
    font-weight: 600;
}

.field-group select,
.field-group input {
    width: 100%;
    appearance: none;
    border: 1px solid rgba(13, 108, 122, 0.18);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    font-size: 1rem;
    color: var(--text-main);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(244, 249, 250, 0.92));
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.field-group select {
    cursor: pointer;
}

.field-group select.is-placeholder {
    color: #8a959b;
}

.field-group select:focus,
.field-group input:focus {
    outline: none;
    border-color: rgba(13, 108, 122, 0.55);
    box-shadow: 0 0 0 4px rgba(13, 108, 122, 0.12);
    transform: translateY(-1px);
}

.field-group select.is-invalid,
.field-group input.is-invalid {
    border-color: rgba(180, 56, 56, 0.7);
    box-shadow: 0 0 0 4px rgba(180, 56, 56, 0.12);
}

.field-group select:disabled,
.field-group input:disabled {
    cursor: not-allowed;
    color: #8a959b;
    background: linear-gradient(180deg, rgba(244, 246, 247, 0.9), rgba(234, 238, 240, 0.9));
}

.field-hint,
.form-status {
    min-height: 1.25rem;
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-soft);
}

.field-hint.is-error,
.form-status.is-error {
    color: #b43838;
}

.form-status.is-success {
    color: #2a7a38;
}

.deal-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.action-button {
    width: 100%;
    border: 0;
    border-radius: var(--radius-md);
    padding: 14px 18px;
    font-size: 1rem;
    font-weight: 700;
    text-align: center;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.action-button:hover {
    transform: translateY(-1px);
}

.action-button:focus {
    outline: none;
    box-shadow: 0 0 0 4px rgba(13, 108, 122, 0.12);
}

.action-button:disabled {
    opacity: 0.65;
    cursor: not-allowed;
    transform: none;
}

.action-button--primary {
    color: #fff;
    background: linear-gradient(180deg, #0d6c7a, #0a5964);
    box-shadow: 0 14px 28px rgba(13, 108, 122, 0.2);
}

.action-button--success {
    color: #fff;
    background: linear-gradient(180deg, #2f8f4c, #26753e);
    box-shadow: 0 14px 28px rgba(47, 143, 76, 0.22);
}

.loading-overlay {
    position: fixed;
    inset: 0;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(232, 240, 243, 0.72);
    backdrop-filter: blur(10px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.loading-overlay.is-visible {
    opacity: 1;
    visibility: visible;
}

.loading-overlay__content {
    min-width: min(320px, 100%);
    padding: 28px 32px;
    border: 1px solid rgba(27, 63, 74, 0.14);
    border-radius: 24px;
    background:
        radial-gradient(circle at top right, rgba(13, 108, 122, 0.16), transparent 30%),
        radial-gradient(circle at bottom left, rgba(240, 160, 72, 0.14), transparent 34%),
        rgba(255, 252, 247, 0.96);
    box-shadow: 0 24px 70px rgba(35, 55, 64, 0.18);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    text-align: center;
}

.loading-overlay__spinner {
    width: 54px;
    height: 54px;
    border-radius: 50%;
    border: 4px solid rgba(13, 108, 122, 0.16);
    border-top-color: var(--accent);
    animation: overlay-spin 0.8s linear infinite;
}

.loading-overlay__text {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-main);
}

@keyframes overlay-spin {
    to {
        transform: rotate(360deg);
    }
}

@media (max-width: 900px) {
    .form-card {
        padding: 22px;
    }
}

@media (max-width: 640px) {
    .page-shell {
        padding: 14px;
    }

    .form-card {
        padding: 18px;
        border-radius: 18px;
    }

    .loading-overlay__content {
        padding: 24px 20px;
        border-radius: 20px;
    }
}