/* ========== Theme System ========== */
:root {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --hover-bg: #fff7ed;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
}

body.dark {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #1e293b;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --border-color: #334155;
  --hover-bg: rgba(255, 107, 0, 0.1);
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.4);
}

* {
  font-family: "Vazirmatn FD NL", "Vazirmatn", system-ui, sans-serif;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes spin-slow {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse-border {
  0%,
  100% {
    border-color: rgba(255, 107, 0, 0.3);
  }
  50% {
    border-color: rgba(255, 107, 0, 0.8);
  }
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-5px);
  }
  75% {
    transform: translateX(5px);
  }
}

.fade-up {
  animation: fadeInUp 0.6s ease-out forwards;
  opacity: 0;
}

.fade-scale {
  animation: fadeInScale 0.5s cubic-bezier(0.2, 0.9, 0.4, 1.1) forwards;
}

.float-animation {
  animation: float 4s ease-in-out infinite;
}

.spin-slow {
  animation: spin-slow 20s linear infinite;
}

.theme-transition {
  transition:
    background-color 0.3s ease,
    color 0.3s ease,
    border-color 0.3s ease,
    box-shadow 0.3s ease;
}

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

/* Form Styles */
.form-input {
  transition: all 0.3s ease;
  background-color: var(--bg-primary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.form-input:focus {
  outline: none;
  border-color: #ff6b00;
  box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.1);
}

.form-input.error {
  border-color: #ef4444;
  animation: shake 0.3s ease-in-out;
}

.form-input.success {
  border-color: #22c55e;
}

/* Contact Card */
.contact-card {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
}

.contact-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(255, 107, 0, 0.3);
}

/* Social Button */
.social-btn {
  transition: all 0.25s ease;
}

.social-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* Submit Button */
.submit-btn {
  transition: all 0.3s cubic-bezier(0.2, 0.9, 0.4, 1.1);
  position: relative;
  overflow: hidden;
}

.submit-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.5s ease;
}

.submit-btn:hover::before {
  left: 100%;
}

.submit-btn:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 10px 25px -5px rgba(255, 107, 0, 0.4);
}

/* Loading Spinner */
.btn-loading .btn-text {
  display: none;
}

.btn-loading .spinner {
  display: inline-block;
}

.spinner {
  display: none;
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin-slow 0.6s linear infinite;
}

/* Error Message */
.field-error {
  font-size: 0.7rem;
  color: #ef4444;
  margin-top: 0.25rem;
  display: none;
}

.field-error.show {
  display: block;
}

/* Success Message */
.success-message {
  display: none;
  animation: fadeInScale 0.4s ease-out;
}

.success-message.show {
  display: block;
}

/* Back to Top Button */
#backToTop {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#backToTop:hover {
  transform: scale(1.1);
  box-shadow: 0 10px 25px -5px rgba(255, 107, 0, 0.4);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--border-color);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, #ff6b00, #e83e8c);
  border-radius: 10px;
}

/* Smooth Scroll */
html {
  scroll-behavior: smooth;
}