/* ====================================
   VELORA ATMOSPHERIC SURFACE SYSTEM
   Four surface types replacing uniform cards
   ==================================== */

/* ========================================
   SURFACE TYPE 1: PAPER SURFACE
   Main content - soft edge, faint shadow, slight warmth
   ======================================== */

.surface-paper {
    background: #ffffff;
    border: 1px solid var(--stroke-subtle, rgba(0, 0, 0, 0.08));
    border-radius: var(--radius-lg, 16px);
    padding: var(--space-8, 2rem) var(--space-6, 1.5rem);
    box-shadow: var(--shadow-tight, 0 1px 2px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.1));
    transition: all var(--motion-section-base, 350ms) var(--ease-section, cubic-bezier(0.4, 0, 0.2, 1));
    position: relative;
}

[data-theme="dark"] .surface-paper {
    background: var(--surface-card-dark, #151829);
    border-color: var(--stroke-subtle-dark, rgba(255, 255, 255, 0.1));
}

/* Paper surface variants */
.surface-paper--spacious {
    padding: var(--space-12, 3rem) var(--space-8, 2rem);
}

.surface-paper--compact {
    padding: var(--space-6, 1.5rem) var(--space-4, 1rem);
}

/* ========================================
   SURFACE TYPE 2: OUTLINE SURFACE
   Secondary info - border + subtle tint, no shadow dominance
   ======================================== */

.surface-outline {
    background: transparent;
    border: 1px solid var(--stroke-base, rgba(0, 0, 0, 0.12));
    border-radius: var(--radius-md, 12px);
    padding: var(--space-6, 1.5rem) var(--space-4, 1rem);
    /* Subtle background tint */
    background-color: rgba(0, 0, 0, 0.01);
    transition: all var(--motion-section-base, 350ms) var(--ease-section, cubic-bezier(0.4, 0, 0.2, 1));
}

[data-theme="dark"] .surface-outline {
    border-color: var(--stroke-base-dark, rgba(255, 255, 255, 0.15));
    background-color: rgba(255, 255, 255, 0.02);
}

/* Outline surface on different backgrounds */
.section-bg-parchment .surface-outline {
    background-color: rgba(0, 0, 0, 0.015);
}

.section-bg-mist .surface-outline {
    background-color: rgba(0, 0, 0, 0.02);
}

[data-theme="dark"] .section-bg-parchment .surface-outline,
[data-theme="dark"] .section-bg-mist .surface-outline {
    background-color: rgba(255, 255, 255, 0.03);
}

/* ========================================
   SURFACE TYPE 3: INSET NOTE
   Interpretations, explanations, tips - slightly darker/warmer than background
   ======================================== */

.surface-inset {
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid var(--stroke-subtle, rgba(0, 0, 0, 0.08));
    border-radius: var(--radius-md, 12px);
    padding: var(--space-6, 1.5rem) var(--space-4, 1rem);
    transition: all var(--motion-section-base, 350ms) var(--ease-section, cubic-bezier(0.4, 0, 0.2, 1));
}

[data-theme="dark"] .surface-inset {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--stroke-subtle-dark, rgba(255, 255, 255, 0.1));
}

/* Inset note on different backgrounds */
.section-bg-parchment .surface-inset {
    background: rgba(0, 0, 0, 0.04);
}

.section-bg-mist .surface-inset {
    background: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .section-bg-parchment .surface-inset,
[data-theme="dark"] .section-bg-mist .surface-inset {
    background: rgba(255, 255, 255, 0.06);
}

/* ========================================
   SURFACE TYPE 4: RITUAL SURFACE
   CTA moments - warmest, most special, visually slower
   ======================================== */

.surface-ritual {
    background: linear-gradient(135deg, 
        rgba(250, 248, 245, 0.95) 0%,
        rgba(245, 243, 255, 0.95) 100%
    );
    border: 1px solid var(--stroke-base, rgba(0, 0, 0, 0.12));
    border-radius: var(--radius-xl, 20px);
    padding: var(--space-12, 3rem) var(--space-8, 2rem);
    box-shadow: var(--shadow-subtle, 0 2px 4px rgba(0, 0, 0, 0.06), 0 4px 8px rgba(0, 0, 0, 0.08));
    transition: all var(--motion-section-slow, 420ms) var(--ease-section, cubic-bezier(0.4, 0, 0.2, 1));
    position: relative;
}

[data-theme="dark"] .surface-ritual {
    background: linear-gradient(135deg,
        rgba(26, 26, 26, 0.95) 0%,
        rgba(26, 31, 53, 0.95) 100%
    );
    border-color: var(--stroke-base-dark, rgba(255, 255, 255, 0.15));
}

/* Ritual surface accent */
.surface-ritual::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg,
        var(--velora-accent-primary, #6B46C1) 0%,
        var(--velora-accent-secondary, #3B82F6) 50%,
        var(--velora-accent-gold, #D4AF37) 100%
    );
    border-radius: var(--radius-xl, 20px) var(--radius-xl, 20px) 0 0;
    opacity: 0.6;
}

/* ========================================
   SURFACE RULES
   Prevent SaaS patterns
   ======================================== */

/* Prevent identical cards stacked vertically */
.surface-paper + .surface-paper,
.surface-outline + .surface-outline,
.surface-inset + .surface-inset {
    margin-top: var(--space-8, 2rem);
}

/* But allow mixing surface types */
.surface-paper + .surface-outline,
.surface-outline + .surface-inset,
.surface-inset + .surface-paper {
    margin-top: var(--space-6, 1.5rem);
}

/* Long prose should not be in cards - use prose-first layout */
.surface-paper p:only-child,
.surface-outline p:only-child {
    max-width: 65ch;
    line-height: 1.8;
}

/* Grids for storytelling should use editorial layout */
.surface-paper .grid,
.surface-outline .grid {
    display: grid;
    gap: var(--space-6, 1.5rem);
}

/* ========================================
   LEGACY CARD MAPPINGS
   Map existing card classes to new surfaces
   ======================================== */

/* Feature cards → Paper Surface */
.velora-card-feature,
.feature-card {
    /* Inherit from surface-paper */
    background: #ffffff;
    border: 1px solid var(--stroke-subtle, rgba(0, 0, 0, 0.08));
    border-radius: var(--radius-lg, 16px);
    padding: var(--space-8, 2rem) var(--space-6, 1.5rem);
    box-shadow: var(--shadow-tight, 0 1px 2px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.1));
}

[data-theme="dark"] .velora-card-feature,
[data-theme="dark"] .feature-card {
    background: var(--surface-card-dark, #151829);
    border-color: var(--stroke-subtle-dark, rgba(255, 255, 255, 0.1));
}

/* Info cards → Outline Surface */
.velora-card-info,
.info-card {
    background: transparent;
    border: 1px solid var(--stroke-base, rgba(0, 0, 0, 0.12));
    border-radius: var(--radius-md, 12px);
    padding: var(--space-6, 1.5rem) var(--space-4, 1rem);
    background-color: rgba(0, 0, 0, 0.01);
}

[data-theme="dark"] .velora-card-info,
[data-theme="dark"] .info-card {
    border-color: var(--stroke-base-dark, rgba(255, 255, 255, 0.15));
    background-color: rgba(255, 255, 255, 0.02);
}

/* Tips/explanations → Inset Note */
.tip-card,
.cycle-explanation-card,
.info-content {
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid var(--stroke-subtle, rgba(0, 0, 0, 0.08));
    border-radius: var(--radius-md, 12px);
    padding: var(--space-6, 1.5rem) var(--space-4, 1rem);
}

[data-theme="dark"] .tip-card,
[data-theme="dark"] .cycle-explanation-card,
[data-theme="dark"] .info-content {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--stroke-subtle-dark, rgba(255, 255, 255, 0.1));
}

/* CTAs → Ritual Surface */
.cosmic-cta,
.cta-section > .container > div {
    background: linear-gradient(135deg, 
        rgba(250, 248, 245, 0.95) 0%,
        rgba(245, 243, 255, 0.95) 100%
    );
    border: 1px solid var(--stroke-base, rgba(0, 0, 0, 0.12));
    border-radius: var(--radius-xl, 20px);
    padding: var(--space-12, 3rem) var(--space-8, 2rem);
    box-shadow: var(--shadow-subtle, 0 2px 4px rgba(0, 0, 0, 0.06), 0 4px 8px rgba(0, 0, 0, 0.08));
}

[data-theme="dark"] .cosmic-cta,
[data-theme="dark"] .cta-section > .container > div {
    background: linear-gradient(135deg,
        rgba(26, 26, 26, 0.95) 0%,
        rgba(26, 31, 53, 0.95) 100%
    );
    border-color: var(--stroke-base-dark, rgba(255, 255, 255, 0.15));
}

/* Calculator cards → Paper Surface */
.calculator-card {
    background: #ffffff;
    border: 1px solid var(--stroke-subtle, rgba(0, 0, 0, 0.08));
    border-radius: var(--radius-lg, 16px);
    padding: var(--space-8, 2rem) var(--space-6, 1.5rem);
    box-shadow: var(--shadow-tight, 0 1px 2px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.1));
}

[data-theme="dark"] .calculator-card {
    background: var(--surface-card-dark, #151829);
    border-color: var(--stroke-subtle-dark, rgba(255, 255, 255, 0.1));
}

/* Cycle cards → Outline Surface */
.cycle-card {
    background: transparent;
    border: 1px solid var(--stroke-base, rgba(0, 0, 0, 0.12));
    border-radius: var(--radius-md, 12px);
    padding: var(--space-6, 1.5rem) var(--space-4, 1rem);
    background-color: rgba(0, 0, 0, 0.01);
}

[data-theme="dark"] .cycle-card {
    border-color: var(--stroke-base-dark, rgba(255, 255, 255, 0.15));
    background-color: rgba(255, 255, 255, 0.02);
}